🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 83 (from laksa073)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa083.int.ahrefs:8124/' \
  -H 'Content-Type: text/plain' \
  -H 'X-ClickHouse-Database: crawler3' \
  -H 'Authorization: Basic YXBpOg==' \
  -d 'SELECT getAhrefsURLFromUnparsed(src_unparsed) AS found_url, ifNull(toUnixTimestamp(download_stamp), 0) AS crawl_time, ifNull(toUnixTimestamp(props_url_first_seen), 0) AS first_indexed_time, download_http_code AS http_code, src_unparsed AS src_unparsed, src_root_hash AS src_root_hash, history_drop_reason AS history_drop_reason, meta_title AS meta_title, meta_descriptions AS meta_descriptions, attrs_boilerpipe_text AS attrs_boilerpipe_text, attrs_markdown AS attrs_markdown, attrs_readable_markdown AS attrs_readable_markdown, meta_canonical AS meta_canonical FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.heartandstroke.ca/heart-disease/emergency-signs\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.heartandstroke.ca/heart-disease/emergency-signs\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.heartandstroke.ca\/heart-disease\/emergency-signs","crawl_time":1776073988,"first_indexed_time":1602360885,"http_code":200,"src_unparsed":"ca,heartandstroke!www,\/heart-disease\/emergency-signs s443","src_root_hash":"4973594587296653283","history_drop_reason":null,"meta_title":"Signs of a heart attack | Heart and Stroke Foundation","meta_descriptions":["Learn the warning signs and symptoms of a heart attack, and what to do. Understand the difference between heart attack and cardiac arrest."],"attrs_boilerpipe_text":"Home\nHeart disease\nSigns of a heart attack\nIf you experience any of these signs, call 9-1-1 or your local emergency number immediately.\nChest discomfort\nPressure, squeezing, fullness or pain, burning or heaviness\nSweating\nUpper body discomfort\nNeck, jaw, shoulder, arms, back\nNausea\nShortness of breath\nLight-headedness\nWomen’s signs of heart attack\nThe most common heart attack sign is chest pain or discomfort; however, women can experience a heart attack without chest pressure. They may experience shortness of breath, pressure or pain in the lower chest or upper abdomen, dizziness, lightheadedness or fainting, upper back pressure or extreme fatigue.\n1. Call 9-1-1 and shout for an AED\nOr call your local emergency number right away. AED’s are often in public places. The 9-1-1 operator may be able to tell you where the nearest one is.\n2. Stop all activity\nSit or lie down, in whatever position is most comfortable.\n3. Take your nitroglycerin\nIf you take nitroglycerin, take your normal dosage.\n4. Take ASA (Aspirin)\nChew and swallow ASA (Aspirin), if you are not allergic or intolerant (either one 325 mg tablet or two 81 mg tablets).\n5. Rest and wait\nStay calm while waiting for help to arrive. \n6. Keep a list of your medications in your wallet and by the phone.\nEmergency personnel will want this information.\nSigns of cardiac arrest\nIf the heart stops beating, blood stops flowing to the brain, heart and other vital organs. Brain injury can begin within minutes.\nSudden collapse\nLoss of consciousness\nUnresponsiveness to touch or sound\nNot breathing or not breathing normally\n1. Call 9-1-1\nand\nshout for an AED\nOr call your local emergency number right away. AEDs can be found in many public locations. The 9-1-1 call taker may be able to tell you or another bystander where to find the nearest AED.\n2. Start CPR right away\nPush hard and fast in the centre of the chest at about 100 to 120 beats per minute. Give two breaths, if willing, after every 30 compressions, especially in emergencies involving children and infants. Doing CPR immediately, even if it’s not perfect, gives the person their best chance of survival. You can’t hurt, you can only help.\n3. Use an AED\nas soon as\none is available\nAn AED, or automated external defibrillator, is a portable electronic device that’s safe and easy to use. Simply turn it on and follow the voice prompts. It will only deliver a shock to restart the heart if needed.\nSigns of SADs\nSADS (Sudden Arrhythmia Death Syndromes) covers a variety of cardiac disorders which are often genetic and can cause sudden death in young, apparently healthy people.\nFainting or seizure during physical activity\nFainting or seizure from distress or being startled.\nFamily history of death that is sudden, unexplained.","attrs_markdown":"[Skip to content](https:\/\/www.heartandstroke.ca\/heart-disease\/emergency-signs#main-content)\n\n[Home, Heart & Stroke logo](https:\/\/www.heartandstroke.ca\/)\n\n[Donate](https:\/\/app-hsfdonation.heartandstroke.ca\/?pagename=DMDonationForm&s_locale=en_CA&s_fT=cont&s_pres=hsweb&s_cscid=hsweb_nav)\n\nMenu\n\n- [![](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/configuration\/icon-warning-18x18.png?rev=dd2626ea158b46b0a157ef7935a9a60c&hash=845B527151ED136E1CD2BD4080057EFC) Emergency signs](https:\/\/www.heartandstroke.ca\/heart-disease\/emergency-signs\/heart-attack-and-stroke)\n- [![](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/configuration\/icon-heartbeat-20x15.png?rev=f343abc16e78411386da555ab61b0da3&hash=E7A8E157DEA949F37C334BF1CEA8106A) CPR training](https:\/\/www.heartandstroke.ca\/how-you-can-help\/learn-cpr)\n- [![](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/configuration\/icon-cross-14x14.png?rev=d4a496fa3e814be691ff90eec88a0056&hash=E6C5FE17216CD00F013419ACA996EFB9) For professionals](https:\/\/www.heartandstroke.ca\/what-we-do\/for-professionals)\n\n[Donate](https:\/\/app-hsfdonation.heartandstroke.ca\/?pagename=DMDonationForm&s_locale=en_CA&s_fT=cont&s_pres=hsweb&s_cscid=hsweb_nav)\n\nBack\n\nClose\n\n- Heart disease\n  - [Heart disease](https:\/\/www.heartandstroke.ca\/heart-disease)\n  - [Signs of a heart attack](https:\/\/www.heartandstroke.ca\/heart-disease\/emergency-signs)\n  - [Heart conditions (A-Z)](https:\/\/www.heartandstroke.ca\/heart-disease\/conditions)\n  - [Tests (A-Z)](https:\/\/www.heartandstroke.ca\/heart-disease\/tests)\n  - [Treatments](https:\/\/www.heartandstroke.ca\/heart-disease\/treatments)\n  - [Risk and prevention](https:\/\/www.heartandstroke.ca\/heart-disease\/risk-and-prevention)\n  - [Recovery and support](https:\/\/www.heartandstroke.ca\/heart-disease\/recovery-and-support)\n  \n  - [![Adria Scarano](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/story\/adria\/adria-692x395.webp?rev=e3442294a8684258bd481b6a77f3fcf0&hash=A926CEC893F0B3C9C31EF231BC7C40C2) Knowing your risks could save your life. Use our Risk Screen tool for your personalized profile and action plan to manage your risks for heart disease and stroke.](https:\/\/www.heartandstroke.ca\/healthy-living\/risk-screen)\n  - [![Two people leaning over a woman on the floor, giving her chest compressions.](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/meganav\/mn_cardiac_arrest.webp?rev=d0b17fde6f454ca29b8056781539edf0&hash=8FD8F6D93168891C62BAA6F9E5474B11) Cardiac arrest](https:\/\/www.heartandstroke.ca\/heart-disease\/conditions\/cardiac-arrest)\n- Stroke\n  - [Stroke](https:\/\/www.heartandstroke.ca\/stroke)\n  - [Signs of stroke](https:\/\/www.heartandstroke.ca\/stroke\/signs-of-stroke)\n  - [Treatments](https:\/\/www.heartandstroke.ca\/stroke\/treatments)\n  - [Risk and prevention](https:\/\/www.heartandstroke.ca\/stroke\/risk-and-prevention)\n  - [Recovery and support](https:\/\/www.heartandstroke.ca\/stroke\/recovery-and-support)\n  \n  Beat your risks\n  \n  - [![Adria Scarano](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/story\/adria\/adria-692x395.webp?rev=e3442294a8684258bd481b6a77f3fcf0&hash=A926CEC893F0B3C9C31EF231BC7C40C2) Knowing your risks could save your life. Try our Risk Screen tool to get your personalized risk profile and action plan to protect your brain health.](https:\/\/www.heartandstroke.ca\/healthy-living\/risk-screen)\n- Healthy living\n  - [Healthy living](https:\/\/www.heartandstroke.ca\/healthy-living)\n  - [Recipes](https:\/\/www.heartandstroke.ca\/healthy-living\/recipes)\n  - [Healthy eating](https:\/\/www.heartandstroke.ca\/healthy-living\/healthy-eating)\n  - [Healthy weight](https:\/\/www.heartandstroke.ca\/healthy-living\/healthy-weight)\n  - [Stay active](https:\/\/www.heartandstroke.ca\/healthy-living\/stay-active)\n  - [Reduce stress](https:\/\/www.heartandstroke.ca\/healthy-living\/reduce-stress)\n  - [Healthy kids](https:\/\/www.heartandstroke.ca\/healthy-living\/healthy-kids)\n  \n  - [![Adria Scarano](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/story\/adria\/adria-692x395.webp?rev=e3442294a8684258bd481b6a77f3fcf0&hash=A926CEC893F0B3C9C31EF231BC7C40C2) Knowing your risks could save your life. Use our Risk Screen tool for your personalized profile and action plan to manage your risks for heart disease and stroke.](https:\/\/www.heartandstroke.ca\/healthy-living\/risk-screen)\n  - [![images to represent healthy living](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/meganav\/mn-healthline-692x396.webp?rev=d2a6ba07abf44b108fbbf161f20da1b9&hash=BBE3CB777DB910A39203A68FFC5D5D11) Sign up for our Healthline newsletter Stay informed and inspired with expert healthy living tips, inspiring stories, research updates and more.](https:\/\/www.heartandstroke.ca\/healthline)\n- What we do\n  - [What we do](https:\/\/www.heartandstroke.ca\/what-we-do)\n  - [Research](https:\/\/www.heartandstroke.ca\/what-we-do\/research)\n  - [Where every dollar goes](https:\/\/www.heartandstroke.ca\/what-we-do\/finances\/where-every-dollar-goes)\n  - [Our story](https:\/\/www.heartandstroke.ca\/what-we-do\/our-impact\/our-story)\n  - [Our impact](https:\/\/www.heartandstroke.ca\/what-we-do\/our-impact)\n  - [Equity, diversity & inclusion](https:\/\/www.heartandstroke.ca\/what-we-do\/equity-diversity-and-inclusion)\n  - [Indigenous health](https:\/\/www.heartandstroke.ca\/what-we-do\/indigenous-health)\n  \n  - [![A female researcher looks into a microscope](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/meganav\/mn-ways-to-give-692x396.webp?rev=5efc69d3152543e39cb66086d9a0a4b5&hash=30BA9E9A720B1040BAA2E0C17356C9A6) Fund the next breakthrough. Donate now. Choose the giving option that’s best for you to save lives in every community in Canada.](https:\/\/www.heartandstroke.ca\/how-you-can-help\/ways-to-give)\n  - [![A large group of diverse people stand outdoors while smiling and holding each other.](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/meganav\/edi-meganav-175x100.webp?rev=e954200294c94c84b009188ae9e49f78&hash=DAC7E0FA2AC6B2448AFD4DD7AC5073F9) Equity, diversity & inclusion - better outcomes for all.](https:\/\/www.heartandstroke.ca\/what-we-do\/equity-diversity-and-inclusion)\n- How you can help\n  - [How you can help](https:\/\/www.heartandstroke.ca\/how-you-can-help)\n  - [Ways to give](https:\/\/www.heartandstroke.ca\/how-you-can-help\/ways-to-give)\n  - [Events](https:\/\/www.heartandstroke.ca\/how-you-can-help\/events)\n  - [Legacy giving](https:\/\/www.heartandstroke.ca\/how-you-can-help\/ways-to-give\/legacy-giving)\n  - [Give in memory](https:\/\/www.heartandstroke.ca\/how-you-can-help\/ways-to-give\/give-in-memory)\n  - [Volunteer](https:\/\/www.heartandstroke.ca\/how-you-can-help\/volunteer)\n  - [Advocate](https:\/\/www.heartandstroke.ca\/how-you-can-help\/advocate)\n  - [Learn CPR](https:\/\/www.heartandstroke.ca\/how-you-can-help\/learn-cpr)\n  \n  - [![Dr. Michael Hill](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/meganav\/drhill-173x99.webp?rev=f9f8c6219b1e4f44b415243e915a7243&hash=3649872E0A036226F3D7D39C1D7DA2FD) Donate to beat heart disease and stroke Choose the giving option that’s best for you to save lives in every community in Canada.](https:\/\/www.heartandstroke.ca\/donations)\n  - [![A mother sitting with her arm around her grown daughter](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/meganav\/mn-legacy-173x99.webp?rev=77b334e42b3f4e0487d3c69d613e23eb&hash=2E8B30ECF001F6595DD4BC8EA01CE1BF) Leave your legacy for future generations](https:\/\/www.heartandstroke.ca\/how-you-can-help\/ways-to-give\/legacy-giving)\n  - [![Two people embracing warmly, one with a peaceful expression and closed eyes.](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/give-in-memory\/waystogive-450x253.webp?rev=f66b72e12105488c82da7caabed3ba21&hash=D02E2BFC9F21032748D5C2181AD58B62) Giving in Memory Honour your loved one by giving in memory](https:\/\/www.heartandstroke.ca\/how-you-can-help\/ways-to-give\/give-in-memory)\n  - [![A girl jumping rope in mid-air.](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/meganav\/mn-jump-173x99.webp?rev=13ee3cc613af4c24baf5eefaaf3b5b1e&hash=D104EC95BE7E1BA97BB74341642C4944) Join Jump Rope for Heart](https:\/\/www.jumpropeforheart.ca\/?utm_source=HS&utm_medium=F24-howyoucanhelp3square&utm_campaign=Jump)\n  - [![A couple running along a snowy winter road](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/meganav\/mn-ride-2025-173x105.webp?rev=9ddaf9427034445a9f8711375d539c34&hash=9B48B3DA2FED0915B59ECF84AA19FD8F) Join our Social Media Challenge community](https:\/\/www.heartandstroke.ca\/heart-disease\/%20https:\/\/www.fundraiseyourway.ca\/facebook-fundraising-challenge?utm_campaign=F25_SMChallenge&utm_medium=mega_block&utm_source=H&S_eventspage_EN)\n  - [![A collage of this year's prizes, including a cheque for one million dollars and three cars.](https:\/\/www.heartandstroke.ca\/-\/media\/lottery-s26\/s26-bop-173x99.webp?rev=94ebda61648d45f4aec9a079c00bffe0&hash=0F97CA6A077AFDAB876B10B039C9BBC3) Play the Lottery. Dream big, win bigger\\!](https:\/\/www.heartandstrokelottery.ca\/?utm_campaign=s26_lottery_en&utm_medium=brand_meganav&utm_source=hsf_website%20)\n- Women\n  - [Women](https:\/\/www.heartandstroke.ca\/women)\n  - [Our strategy](https:\/\/www.heartandstroke.ca\/women\/strategy)\n  - [The research](https:\/\/www.heartandstroke.ca\/women\/the-research)\n  - [Risk factors](https:\/\/www.heartandstroke.ca\/women\/womens-risk-factors)\n  - [Stories](https:\/\/www.heartandstroke.ca\/women\/stories)\n  - [Take action](https:\/\/www.heartandstroke.ca\/women\/take-action)\n  \n  Beat your risks\n  \n  - [![Adria Scarano](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/story\/adria\/adria-692x395.webp?rev=e3442294a8684258bd481b6a77f3fcf0&hash=A926CEC893F0B3C9C31EF231BC7C40C2) New Risk Screen tool 90% of women are at risk for heart disease and stroke. Use our Risk Screen tool to know and manage your unique risks.](https:\/\/www.heartandstroke.ca\/healthy-living\/risk-screen)\n- - [![](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/configuration\/icon-warning-18x18.png?rev=dd2626ea158b46b0a157ef7935a9a60c&hash=845B527151ED136E1CD2BD4080057EFC) Emergency signs](https:\/\/www.heartandstroke.ca\/heart-disease\/emergency-signs\/heart-attack-and-stroke)\n  - [![](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/configuration\/icon-heartbeat-20x15.png?rev=f343abc16e78411386da555ab61b0da3&hash=E7A8E157DEA949F37C334BF1CEA8106A) CPR training](https:\/\/www.heartandstroke.ca\/how-you-can-help\/learn-cpr)\n  - [![](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/configuration\/icon-cross-14x14.png?rev=d4a496fa3e814be691ff90eec88a0056&hash=E6C5FE17216CD00F013419ACA996EFB9) For professionals](https:\/\/www.heartandstroke.ca\/what-we-do\/for-professionals)\n  - [Donate](https:\/\/app-hsfdonation.heartandstroke.ca\/?pagename=DMDonationForm&s_locale=en_CA&s_fT=cont&s_pres=hsweb&s_cscid=hsweb_nav)\n  - [Français](https:\/\/www.coeuretavc.ca\/maladies-du-coeur\/signes-d-urgence)\n\n1. [Home](https:\/\/www.heartandstroke.ca\/)\n2. [Heart disease](https:\/\/www.heartandstroke.ca\/heart-disease)\n3. [Signs of a heart attack](https:\/\/www.heartandstroke.ca\/heart-disease\/emergency-signs)\n# Emergency signs\n# Signs of a heart attack\nIf you experience any of these signs, call 9-1-1 or your local emergency number immediately.\n\n- ![Chest discomfort](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/svg\/sign-of-heart-attack-generic-version\/f21_soha_chestpain_rgb_white.svg?rev=431fdaff59334013bdb76aa818e8b45d&la=en&h=576&w=768&hash=AC7F17E22367D2FE207C4F1318BBE6F5)\n  \n  Chest discomfort Pressure, squeezing, fullness or pain, burning or heaviness\n- ![Sweating](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/svg\/sign-of-heart-attack-generic-version\/f21_soha_sweating_rgb_white.svg?rev=12a975fe7a834cc6815cf3bd33eb3526&la=en&h=576&w=768&hash=B3A3FE464A524835EB55500A05F00C65)\n  \n  Sweating\n- ![Upper body discomfort](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/svg\/sign-of-heart-attack-generic-version\/f21_soha_upperbodydiscomfort_rgb_white.svg?rev=1e619619245643ef9320ec33db250fa7&la=en&h=576&w=768&hash=73B48AA93357CABA4028016731ABBFF3)\n  \n  Upper body discomfort Neck, jaw, shoulder, arms, back\n- ![Nausea](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/svg\/sign-of-heart-attack-generic-version\/f21_soha_nausea_rgb_white.svg?rev=1da71b8dbc6d476d822fd12a116c4107&la=en&h=576&w=768&hash=FC18E95A528D94B1996CF7BDF59DC6A0)\n  \n  Nausea\n- ![Shortness of breath](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/svg\/sign-of-heart-attack-generic-version\/f21_soha_shortnessofbreath_rgb_white.svg?rev=4e1322c3aa274419a8b36f390bb57ea9&la=en&h=576&w=768&hash=7183999F0CE92CA6B2CC7CEFA735C986)\n  \n  Shortness of breath\n- ![Light-headedness](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/svg\/sign-of-heart-attack-generic-version\/f21_soha_lightheadedness_rgb_white.svg?rev=4c1e0801085b4a83910bed953660d328&la=en&h=576&w=768&hash=10CE49FA98C3A4B197CFA9473D67A96A)\n  \n  Light-headedness\n\n## Women’s signs of heart attack\nThe most common heart attack sign is chest pain or discomfort; however, women can experience a heart attack without chest pressure. They may experience shortness of breath, pressure or pain in the lower chest or upper abdomen, dizziness, lightheadedness or fainting, upper back pressure or extreme fatigue.\n\n## Experiencing signs of a heart attack?\nThousands of Canadians die from heart attacks each year. Recognize the signs. Act quickly. You could save a life.\n\n### 1\\. Call 9-1-1 and shout for an AED\nOr call your local emergency number right away. AED’s are often in public places. The 9-1-1 operator may be able to tell you where the nearest one is.\n\n### 2\\. Stop all activity\nSit or lie down, in whatever position is most comfortable.\n\n### 3\\. Take your nitroglycerin\nIf you take nitroglycerin, take your normal dosage.\n\n### 4\\. Take ASA (Aspirin)\nChew and swallow ASA (Aspirin), if you are not allergic or intolerant (either one 325 mg tablet or two 81 mg tablets).\n\n### 5\\. Rest and wait\nStay calm while waiting for help to arrive.\n\n### 6\\. Keep a list of your medications in your wallet and by the phone.\nEmergency personnel will want this information.\n\n## Signs of cardiac arrest\nIf the heart stops beating, blood stops flowing to the brain, heart and other vital organs. Brain injury can begin within minutes.\n\n1. Sudden collapse\n2. Loss of consciousness\n3. Unresponsiveness to touch or sound\n4. Not breathing or not breathing normally\n\n[Learn more](https:\/\/www.heartandstroke.ca\/heart-disease\/conditions\/cardiac-arrest)\n\n## Witnessing signs of a cardiac arrest?\nHere’s what to do...\n\n### 1\\. Call 9-1-1 and shout for an AED\nOr call your local emergency number right away. AEDs can be found in many public locations. The 9-1-1 call taker may be able to tell you or another bystander where to find the nearest AED.\n\n### 2\\. Start CPR right away\nPush hard and fast in the centre of the chest at about 100 to 120 beats per minute. Give two breaths, if willing, after every 30 compressions, especially in emergencies involving children and infants. Doing CPR immediately, even if it’s not perfect, gives the person their best chance of survival. You can’t hurt, you can only help.\n\n### 3\\. Use an AED as soon as one is available\nAn AED, or automated external defibrillator, is a portable electronic device that’s safe and easy to use. Simply turn it on and follow the voice prompts. It will only deliver a shock to restart the heart if needed.\n\n## Who should learn CPR and how to use an AED?\n### Everyone should learn. Cardiac arrest is a critical medical emergency where every second counts.\n***\n[Learn CPR now](https:\/\/www.heartandstroke.ca\/how-you-can-help\/learn-cpr)\n\n## Signs of SADs\nSADS (Sudden Arrhythmia Death Syndromes) covers a variety of cardiac disorders which are often genetic and can cause sudden death in young, apparently healthy people.\n\n1. Fainting or seizure during physical activity\n2. Fainting or seizure from distress or being startled.\n3. Family history of death that is sudden, unexplained.\n\n[What to do](https:\/\/www.heartandstroke.ca\/heart-disease\/conditions\/inherited-rhythm-disorders)\n\n![Beat heart disease. Beat stroke. Beat as one.](https:\/\/www.heartandstroke.ca\/-\/media\/images\/homepage\/beat-as-one-1397x110.png?rev=4038fb990a96444cb1101d86242d9f62&la=en&h=110&w=1397&hash=F74297D5DA8EA13DCD92E3B8BC155500)\n\nGet in touch\n\n- [Contact us](https:\/\/www.heartandstroke.ca\/contact-us)\n\nAbout us\n\n- [Strategy](https:\/\/www.heartandstroke.ca\/what-we-do\/strategy)\n- [Leadership](https:\/\/www.heartandstroke.ca\/what-we-do\/leadership)\n- [Financials](https:\/\/www.heartandstroke.ca\/what-we-do\/finances)\n- [Corporate partnerships](https:\/\/www.heartandstroke.ca\/how-you-can-help\/ways-to-give\/corporate-partner)\n- [Careers](https:\/\/www.heartandstroke.ca\/what-we-do\/careers)\n\nFor media\n\n- [Media centre](https:\/\/www.heartandstroke.ca\/what-we-do\/media-centre)\n- [News releases](https:\/\/www.heartandstroke.ca\/what-we-do\/media-centre\/news-releases)\n- [Position statements](https:\/\/www.heartandstroke.ca\/heart-and-stroke-position-statements)\n- [Communications staff](https:\/\/www.heartandstroke.ca\/communications-staff)\n\nFor patients\n\n- [Health publications](https:\/\/www.heartandstroke.ca\/what-we-do\/publications)\n- [Services and resources](https:\/\/www.heartandstroke.ca\/services-and-resources)\n- [Stroke Best Practices](https:\/\/www.strokebestpractices.ca\/resources\/patient-resources)\n\nOur sites\n\n- [Heart & Stroke Lottery](https:\/\/www.heartandstrokelottery.ca\/en\/home)\n- [Jump Rope for Heart](https:\/\/www.jumpropeforheart.ca\/)\n- [Ride for Heart](https:\/\/www.rideforheart.ca\/)\n- [Fundraise Your Way](https:\/\/www.fundraiseyourway.ca\/)\n- [HeartSmart Kids](https:\/\/hskids.ca\/)\n- [Shop](https:\/\/shop.heartandstroke.ca\/en\/cad?utm_source=brand_website&utm_medium=footer)\n\n[Address 2300 Yonge St., Suite 1200, Box 2414 Toronto ON M4P 1E4](https:\/\/goo.gl\/maps\/mSxWmPfQVK4Zhxsn8)\n\n[Telephone 1-888-473-4636](tel:1-888-473-4636)\n\n[Français](https:\/\/www.coeuretavc.ca\/maladies-du-coeur\/signes-d-urgence)\n\n[Donate](https:\/\/app-hsfdonation.heartandstroke.ca\/?pagename=DMDonationForm&s_locale=en_CA&s_fT=cont&s_pres=hsweb&s_cscid=hsweb_footer)\n\n- [Privacy policy](https:\/\/www.heartandstroke.ca\/privacy-policy)\n- [Supply chain report](https:\/\/www.heartandstroke.ca\/supply-chains-report)\n- [Terms of use](https:\/\/www.heartandstroke.ca\/terms-of-use)\n- [Copyright](https:\/\/www.heartandstroke.ca\/copyright)\n- [Linking policy](https:\/\/www.heartandstroke.ca\/linking-policy)\n- [Complaints policy](https:\/\/www.heartandstroke.ca\/complaints-policy)\n- [Accessibility](https:\/\/www.heartandstroke.ca\/accessibility)\n- [Equity, diversity & inclusion](https:\/\/www.heartandstroke.ca\/what-we-do\/equity-diversity-and-inclusion)\n- [Sitemap](https:\/\/www.heartandstroke.ca\/sitemap-index)\n\n- [link to Heart and Stroke Facebook](https:\/\/www.facebook.com\/heartandstroke\/)\n- [Instagram](https:\/\/www.instagram.com\/heartandstroke\/)\n- [Twitter](https:\/\/twitter.com\/HeartandStroke)\n- [Youtube](https:\/\/www.youtube.com\/user\/heartandstrokefdn)\n\n![Strong charities, strong communities, imagine canada, accredited since 2019](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/configuration\/footer-logo-75x75.png?h=75&iar=0&w=75&rev=5daa3d7bc21b484fbd3ea402570399a6)\n\n© Heart and Stroke Foundation of Canada, 2026. All rights reserved. \\| ™ Life. We don’t want you to miss it., Saving moments. Funding breakthroughs. Saving lives., and the heart and \/ Icon on its own or followed by another icon or words are trademarks of the Heart and Stroke Foundation of Canada. Charitable Registration No. 106846942 RR0001.\n\n![](https:\/\/ct.pinterest.com\/v3\/?event=init&tid=2612395230416&pd[em]=<hashed_email_address>&noscript=1)","attrs_readable_markdown":"1. [Home](https:\/\/www.heartandstroke.ca\/)\n2. [Heart disease](https:\/\/www.heartandstroke.ca\/heart-disease)\n3. [Signs of a heart attack](https:\/\/www.heartandstroke.ca\/heart-disease\/emergency-signs)\n\nIf you experience any of these signs, call 9-1-1 or your local emergency number immediately.\n\n- ![Chest discomfort](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/svg\/sign-of-heart-attack-generic-version\/f21_soha_chestpain_rgb_white.svg?rev=431fdaff59334013bdb76aa818e8b45d&la=en&h=576&w=768&hash=AC7F17E22367D2FE207C4F1318BBE6F5)\n  \n  Chest discomfort Pressure, squeezing, fullness or pain, burning or heaviness\n- ![Sweating](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/svg\/sign-of-heart-attack-generic-version\/f21_soha_sweating_rgb_white.svg?rev=12a975fe7a834cc6815cf3bd33eb3526&la=en&h=576&w=768&hash=B3A3FE464A524835EB55500A05F00C65)\n  \n  Sweating\n- ![Upper body discomfort](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/svg\/sign-of-heart-attack-generic-version\/f21_soha_upperbodydiscomfort_rgb_white.svg?rev=1e619619245643ef9320ec33db250fa7&la=en&h=576&w=768&hash=73B48AA93357CABA4028016731ABBFF3)\n  \n  Upper body discomfort Neck, jaw, shoulder, arms, back\n- ![Nausea](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/svg\/sign-of-heart-attack-generic-version\/f21_soha_nausea_rgb_white.svg?rev=1da71b8dbc6d476d822fd12a116c4107&la=en&h=576&w=768&hash=FC18E95A528D94B1996CF7BDF59DC6A0)\n  \n  Nausea\n- ![Shortness of breath](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/svg\/sign-of-heart-attack-generic-version\/f21_soha_shortnessofbreath_rgb_white.svg?rev=4e1322c3aa274419a8b36f390bb57ea9&la=en&h=576&w=768&hash=7183999F0CE92CA6B2CC7CEFA735C986)\n  \n  Shortness of breath\n- ![Light-headedness](https:\/\/www.heartandstroke.ca\/-\/media\/sites\/hsf\/svg\/sign-of-heart-attack-generic-version\/f21_soha_lightheadedness_rgb_white.svg?rev=4c1e0801085b4a83910bed953660d328&la=en&h=576&w=768&hash=10CE49FA98C3A4B197CFA9473D67A96A)\n  \n  Light-headedness\n\n## Women’s signs of heart attack\nThe most common heart attack sign is chest pain or discomfort; however, women can experience a heart attack without chest pressure. They may experience shortness of breath, pressure or pain in the lower chest or upper abdomen, dizziness, lightheadedness or fainting, upper back pressure or extreme fatigue.\n\n### 1\\. Call 9-1-1 and shout for an AED\nOr call your local emergency number right away. AED’s are often in public places. The 9-1-1 operator may be able to tell you where the nearest one is.\n\n### 2\\. Stop all activity\nSit or lie down, in whatever position is most comfortable.\n\n### 3\\. Take your nitroglycerin\nIf you take nitroglycerin, take your normal dosage.\n\n### 4\\. Take ASA (Aspirin)\nChew and swallow ASA (Aspirin), if you are not allergic or intolerant (either one 325 mg tablet or two 81 mg tablets).\n\n### 5\\. Rest and wait\nStay calm while waiting for help to arrive.\n\n### 6\\. Keep a list of your medications in your wallet and by the phone.\nEmergency personnel will want this information.\n\n## Signs of cardiac arrest\nIf the heart stops beating, blood stops flowing to the brain, heart and other vital organs. Brain injury can begin within minutes.\n\n1. Sudden collapse\n2. Loss of consciousness\n3. Unresponsiveness to touch or sound\n4. Not breathing or not breathing normally\n\n### 1\\. Call 9-1-1 and shout for an AED\nOr call your local emergency number right away. AEDs can be found in many public locations. The 9-1-1 call taker may be able to tell you or another bystander where to find the nearest AED.\n\n### 2\\. Start CPR right away\nPush hard and fast in the centre of the chest at about 100 to 120 beats per minute. Give two breaths, if willing, after every 30 compressions, especially in emergencies involving children and infants. Doing CPR immediately, even if it’s not perfect, gives the person their best chance of survival. You can’t hurt, you can only help.\n\n### 3\\. Use an AED as soon as one is available\nAn AED, or automated external defibrillator, is a portable electronic device that’s safe and easy to use. Simply turn it on and follow the voice prompts. It will only deliver a shock to restart the heart if needed.\n\n## Signs of SADs\nSADS (Sudden Arrhythmia Death Syndromes) covers a variety of cardiac disorders which are often genetic and can cause sudden death in young, apparently healthy people.\n\n1. Fainting or seizure during physical activity\n2. Fainting or seizure from distress or being startled.\n3. Family history of death that is sudden, unexplained.","meta_canonical":null}

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URL	https://www.heartandstroke.ca/heart-disease/emergency-signs
Last Crawled	2026-04-13 09:53:08 (15 hours ago)
First Indexed	2020-10-10 20:14:45 (5 years ago)
HTTP Status Code	200
Meta Title	Signs of a heart attack \| Heart and Stroke Foundation
Meta Description	Learn the warning signs and symptoms of a heart attack, and what to do. Understand the difference between heart attack and cardiac arrest.
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Boilerpipe Text	Home Heart disease Signs of a heart attack If you experience any of these signs, call 9-1-1 or your local emergency number immediately. Chest discomfort Pressure, squeezing, fullness or pain, burning or heaviness Sweating Upper body discomfort Neck, jaw, shoulder, arms, back Nausea Shortness of breath Light-headedness Women’s signs of heart attack The most common heart attack sign is chest pain or discomfort; however, women can experience a heart attack without chest pressure. They may experience shortness of breath, pressure or pain in the lower chest or upper abdomen, dizziness, lightheadedness or fainting, upper back pressure or extreme fatigue. 1. Call 9-1-1 and shout for an AED Or call your local emergency number right away. AED’s are often in public places. The 9-1-1 operator may be able to tell you where the nearest one is. 2. Stop all activity Sit or lie down, in whatever position is most comfortable. 3. Take your nitroglycerin If you take nitroglycerin, take your normal dosage. 4. Take ASA (Aspirin) Chew and swallow ASA (Aspirin), if you are not allergic or intolerant (either one 325 mg tablet or two 81 mg tablets). 5. Rest and wait Stay calm while waiting for help to arrive. 6. Keep a list of your medications in your wallet and by the phone. Emergency personnel will want this information. Signs of cardiac arrest If the heart stops beating, blood stops flowing to the brain, heart and other vital organs. Brain injury can begin within minutes. Sudden collapse Loss of consciousness Unresponsiveness to touch or sound Not breathing or not breathing normally 1. Call 9-1-1 and shout for an AED Or call your local emergency number right away. AEDs can be found in many public locations. The 9-1-1 call taker may be able to tell you or another bystander where to find the nearest AED. 2. Start CPR right away Push hard and fast in the centre of the chest at about 100 to 120 beats per minute. Give two breaths, if willing, after every 30 compressions, especially in emergencies involving children and infants. Doing CPR immediately, even if it’s not perfect, gives the person their best chance of survival. You can’t hurt, you can only help. 3. Use an AED as soon as one is available An AED, or automated external defibrillator, is a portable electronic device that’s safe and easy to use. Simply turn it on and follow the voice prompts. It will only deliver a shock to restart the heart if needed. Signs of SADs SADS (Sudden Arrhythmia Death Syndromes) covers a variety of cardiac disorders which are often genetic and can cause sudden death in young, apparently healthy people. Fainting or seizure during physical activity Fainting or seizure from distress or being startled. Family history of death that is sudden, unexplained.
Markdown	[Skip to content](https://www.heartandstroke.ca/heart-disease/emergency-signs#main-content) [Home, Heart & Stroke logo](https://www.heartandstroke.ca/) [Donate](https://app-hsfdonation.heartandstroke.ca/?pagename=DMDonationForm&s_locale=en_CA&s_fT=cont&s_pres=hsweb&s_cscid=hsweb_nav) Menu - [![](https://www.heartandstroke.ca/-/media/sites/hsf/configuration/icon-warning-18x18.png?rev=dd2626ea158b46b0a157ef7935a9a60c&hash=845B527151ED136E1CD2BD4080057EFC) Emergency signs](https://www.heartandstroke.ca/heart-disease/emergency-signs/heart-attack-and-stroke) - [![](https://www.heartandstroke.ca/-/media/sites/hsf/configuration/icon-heartbeat-20x15.png?rev=f343abc16e78411386da555ab61b0da3&hash=E7A8E157DEA949F37C334BF1CEA8106A) CPR training](https://www.heartandstroke.ca/how-you-can-help/learn-cpr) - [![](https://www.heartandstroke.ca/-/media/sites/hsf/configuration/icon-cross-14x14.png?rev=d4a496fa3e814be691ff90eec88a0056&hash=E6C5FE17216CD00F013419ACA996EFB9) For professionals](https://www.heartandstroke.ca/what-we-do/for-professionals) [Donate](https://app-hsfdonation.heartandstroke.ca/?pagename=DMDonationForm&s_locale=en_CA&s_fT=cont&s_pres=hsweb&s_cscid=hsweb_nav) Back Close - Heart disease - [Heart disease](https://www.heartandstroke.ca/heart-disease) - [Signs of a heart attack](https://www.heartandstroke.ca/heart-disease/emergency-signs) - [Heart conditions (A-Z)](https://www.heartandstroke.ca/heart-disease/conditions) - [Tests (A-Z)](https://www.heartandstroke.ca/heart-disease/tests) - [Treatments](https://www.heartandstroke.ca/heart-disease/treatments) - [Risk and prevention](https://www.heartandstroke.ca/heart-disease/risk-and-prevention) - [Recovery and support](https://www.heartandstroke.ca/heart-disease/recovery-and-support) - [![Adria Scarano](https://www.heartandstroke.ca/-/media/sites/hsf/story/adria/adria-692x395.webp?rev=e3442294a8684258bd481b6a77f3fcf0&hash=A926CEC893F0B3C9C31EF231BC7C40C2) Knowing your risks could save your life. Use our Risk Screen tool for your personalized profile and action plan to manage your risks for heart disease and stroke.](https://www.heartandstroke.ca/healthy-living/risk-screen) - [![Two people leaning over a woman on the floor, giving her chest compressions.](https://www.heartandstroke.ca/-/media/sites/hsf/meganav/mn_cardiac_arrest.webp?rev=d0b17fde6f454ca29b8056781539edf0&hash=8FD8F6D93168891C62BAA6F9E5474B11) Cardiac arrest](https://www.heartandstroke.ca/heart-disease/conditions/cardiac-arrest) - Stroke - [Stroke](https://www.heartandstroke.ca/stroke) - [Signs of stroke](https://www.heartandstroke.ca/stroke/signs-of-stroke) - [Treatments](https://www.heartandstroke.ca/stroke/treatments) - [Risk and prevention](https://www.heartandstroke.ca/stroke/risk-and-prevention) - [Recovery and support](https://www.heartandstroke.ca/stroke/recovery-and-support) Beat your risks - [![Adria Scarano](https://www.heartandstroke.ca/-/media/sites/hsf/story/adria/adria-692x395.webp?rev=e3442294a8684258bd481b6a77f3fcf0&hash=A926CEC893F0B3C9C31EF231BC7C40C2) Knowing your risks could save your life. 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Use our Risk Screen tool for your personalized profile and action plan to manage your risks for heart disease and stroke.](https://www.heartandstroke.ca/healthy-living/risk-screen) - [![images to represent healthy living](https://www.heartandstroke.ca/-/media/sites/hsf/meganav/mn-healthline-692x396.webp?rev=d2a6ba07abf44b108fbbf161f20da1b9&hash=BBE3CB777DB910A39203A68FFC5D5D11) Sign up for our Healthline newsletter Stay informed and inspired with expert healthy living tips, inspiring stories, research updates and more.](https://www.heartandstroke.ca/healthline) - What we do - [What we do](https://www.heartandstroke.ca/what-we-do) - [Research](https://www.heartandstroke.ca/what-we-do/research) - [Where every dollar goes](https://www.heartandstroke.ca/what-we-do/finances/where-every-dollar-goes) - [Our story](https://www.heartandstroke.ca/what-we-do/our-impact/our-story) - [Our impact](https://www.heartandstroke.ca/what-we-do/our-impact) - [Equity, diversity & inclusion](https://www.heartandstroke.ca/what-we-do/equity-diversity-and-inclusion) - [Indigenous health](https://www.heartandstroke.ca/what-we-do/indigenous-health) - [![A female researcher looks into a microscope](https://www.heartandstroke.ca/-/media/sites/hsf/meganav/mn-ways-to-give-692x396.webp?rev=5efc69d3152543e39cb66086d9a0a4b5&hash=30BA9E9A720B1040BAA2E0C17356C9A6) Fund the next breakthrough. Donate now. 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[Signs of a heart attack](https://www.heartandstroke.ca/heart-disease/emergency-signs) # Emergency signs # Signs of a heart attack If you experience any of these signs, call 9-1-1 or your local emergency number immediately. - ![Chest discomfort](https://www.heartandstroke.ca/-/media/sites/hsf/svg/sign-of-heart-attack-generic-version/f21_soha_chestpain_rgb_white.svg?rev=431fdaff59334013bdb76aa818e8b45d&la=en&h=576&w=768&hash=AC7F17E22367D2FE207C4F1318BBE6F5) Chest discomfort Pressure, squeezing, fullness or pain, burning or heaviness - ![Sweating](https://www.heartandstroke.ca/-/media/sites/hsf/svg/sign-of-heart-attack-generic-version/f21_soha_sweating_rgb_white.svg?rev=12a975fe7a834cc6815cf3bd33eb3526&la=en&h=576&w=768&hash=B3A3FE464A524835EB55500A05F00C65) Sweating - ![Upper body discomfort](https://www.heartandstroke.ca/-/media/sites/hsf/svg/sign-of-heart-attack-generic-version/f21_soha_upperbodydiscomfort_rgb_white.svg?rev=1e619619245643ef9320ec33db250fa7&la=en&h=576&w=768&hash=73B48AA93357CABA4028016731ABBFF3) Upper body discomfort Neck, jaw, shoulder, arms, back - ![Nausea](https://www.heartandstroke.ca/-/media/sites/hsf/svg/sign-of-heart-attack-generic-version/f21_soha_nausea_rgb_white.svg?rev=1da71b8dbc6d476d822fd12a116c4107&la=en&h=576&w=768&hash=FC18E95A528D94B1996CF7BDF59DC6A0) Nausea - ![Shortness of breath](https://www.heartandstroke.ca/-/media/sites/hsf/svg/sign-of-heart-attack-generic-version/f21_soha_shortnessofbreath_rgb_white.svg?rev=4e1322c3aa274419a8b36f390bb57ea9&la=en&h=576&w=768&hash=7183999F0CE92CA6B2CC7CEFA735C986) Shortness of breath - ![Light-headedness](https://www.heartandstroke.ca/-/media/sites/hsf/svg/sign-of-heart-attack-generic-version/f21_soha_lightheadedness_rgb_white.svg?rev=4c1e0801085b4a83910bed953660d328&la=en&h=576&w=768&hash=10CE49FA98C3A4B197CFA9473D67A96A) Light-headedness ## Women’s signs of heart attack The most common heart attack sign is chest pain or discomfort; however, women can experience a heart attack without chest pressure. They may experience shortness of breath, pressure or pain in the lower chest or upper abdomen, dizziness, lightheadedness or fainting, upper back pressure or extreme fatigue. ## Experiencing signs of a heart attack? Thousands of Canadians die from heart attacks each year. Recognize the signs. Act quickly. You could save a life. ### 1\. Call 9-1-1 and shout for an AED Or call your local emergency number right away. AED’s are often in public places. The 9-1-1 operator may be able to tell you where the nearest one is. ### 2\. Stop all activity Sit or lie down, in whatever position is most comfortable. ### 3\. Take your nitroglycerin If you take nitroglycerin, take your normal dosage. ### 4\. Take ASA (Aspirin) Chew and swallow ASA (Aspirin), if you are not allergic or intolerant (either one 325 mg tablet or two 81 mg tablets). ### 5\. Rest and wait Stay calm while waiting for help to arrive. ### 6\. Keep a list of your medications in your wallet and by the phone. Emergency personnel will want this information. ## Signs of cardiac arrest If the heart stops beating, blood stops flowing to the brain, heart and other vital organs. Brain injury can begin within minutes. 1. Sudden collapse 2. Loss of consciousness 3. Unresponsiveness to touch or sound 4. Not breathing or not breathing normally [Learn more](https://www.heartandstroke.ca/heart-disease/conditions/cardiac-arrest) ## Witnessing signs of a cardiac arrest? Here’s what to do... ### 1\. Call 9-1-1 and shout for an AED Or call your local emergency number right away. AEDs can be found in many public locations. The 9-1-1 call taker may be able to tell you or another bystander where to find the nearest AED. ### 2\. Start CPR right away Push hard and fast in the centre of the chest at about 100 to 120 beats per minute. Give two breaths, if willing, after every 30 compressions, especially in emergencies involving children and infants. Doing CPR immediately, even if it’s not perfect, gives the person their best chance of survival. You can’t hurt, you can only help. ### 3\. Use an AED as soon as one is available An AED, or automated external defibrillator, is a portable electronic device that’s safe and easy to use. Simply turn it on and follow the voice prompts. It will only deliver a shock to restart the heart if needed. ## Who should learn CPR and how to use an AED? ### Everyone should learn. Cardiac arrest is a critical medical emergency where every second counts. *** [Learn CPR now](https://www.heartandstroke.ca/how-you-can-help/learn-cpr) ## Signs of SADs SADS (Sudden Arrhythmia Death Syndromes) covers a variety of cardiac disorders which are often genetic and can cause sudden death in young, apparently healthy people. 1. Fainting or seizure during physical activity 2. Fainting or seizure from distress or being startled. 3. Family history of death that is sudden, unexplained. [What to do](https://www.heartandstroke.ca/heart-disease/conditions/inherited-rhythm-disorders) ![Beat heart disease. Beat stroke. Beat as one.](https://www.heartandstroke.ca/-/media/images/homepage/beat-as-one-1397x110.png?rev=4038fb990a96444cb1101d86242d9f62&la=en&h=110&w=1397&hash=F74297D5DA8EA13DCD92E3B8BC155500) Get in touch - [Contact us](https://www.heartandstroke.ca/contact-us) About us - [Strategy](https://www.heartandstroke.ca/what-we-do/strategy) - [Leadership](https://www.heartandstroke.ca/what-we-do/leadership) - [Financials](https://www.heartandstroke.ca/what-we-do/finances) - [Corporate partnerships](https://www.heartandstroke.ca/how-you-can-help/ways-to-give/corporate-partner) - [Careers](https://www.heartandstroke.ca/what-we-do/careers) For media - [Media centre](https://www.heartandstroke.ca/what-we-do/media-centre) - [News releases](https://www.heartandstroke.ca/what-we-do/media-centre/news-releases) - [Position statements](https://www.heartandstroke.ca/heart-and-stroke-position-statements) - [Communications staff](https://www.heartandstroke.ca/communications-staff) For patients - [Health publications](https://www.heartandstroke.ca/what-we-do/publications) - [Services and resources](https://www.heartandstroke.ca/services-and-resources) - [Stroke Best Practices](https://www.strokebestpractices.ca/resources/patient-resources) Our sites - [Heart & Stroke Lottery](https://www.heartandstrokelottery.ca/en/home) - [Jump Rope for Heart](https://www.jumpropeforheart.ca/) - [Ride for Heart](https://www.rideforheart.ca/) - [Fundraise Your Way](https://www.fundraiseyourway.ca/) - [HeartSmart Kids](https://hskids.ca/) - [Shop](https://shop.heartandstroke.ca/en/cad?utm_source=brand_website&utm_medium=footer) [Address 2300 Yonge St., Suite 1200, Box 2414 Toronto ON M4P 1E4](https://goo.gl/maps/mSxWmPfQVK4Zhxsn8) [Telephone 1-888-473-4636](tel:1-888-473-4636) [Français](https://www.coeuretavc.ca/maladies-du-coeur/signes-d-urgence) [Donate](https://app-hsfdonation.heartandstroke.ca/?pagename=DMDonationForm&s_locale=en_CA&s_fT=cont&s_pres=hsweb&s_cscid=hsweb_footer) - [Privacy policy](https://www.heartandstroke.ca/privacy-policy) - [Supply chain report](https://www.heartandstroke.ca/supply-chains-report) - [Terms of use](https://www.heartandstroke.ca/terms-of-use) - [Copyright](https://www.heartandstroke.ca/copyright) - [Linking policy](https://www.heartandstroke.ca/linking-policy) - [Complaints policy](https://www.heartandstroke.ca/complaints-policy) - [Accessibility](https://www.heartandstroke.ca/accessibility) - [Equity, diversity & inclusion](https://www.heartandstroke.ca/what-we-do/equity-diversity-and-inclusion) - [Sitemap](https://www.heartandstroke.ca/sitemap-index) - [link to Heart and Stroke Facebook](https://www.facebook.com/heartandstroke/) - [Instagram](https://www.instagram.com/heartandstroke/) - [Twitter](https://twitter.com/HeartandStroke) - [Youtube](https://www.youtube.com/user/heartandstrokefdn) ![Strong charities, strong communities, imagine canada, accredited since 2019](https://www.heartandstroke.ca/-/media/sites/hsf/configuration/footer-logo-75x75.png?h=75&iar=0&w=75&rev=5daa3d7bc21b484fbd3ea402570399a6) © Heart and Stroke Foundation of Canada, 2026. 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Readable Markdown	1. [Home](https://www.heartandstroke.ca/) 2. [Heart disease](https://www.heartandstroke.ca/heart-disease) 3. [Signs of a heart attack](https://www.heartandstroke.ca/heart-disease/emergency-signs) If you experience any of these signs, call 9-1-1 or your local emergency number immediately. - ![Chest discomfort](https://www.heartandstroke.ca/-/media/sites/hsf/svg/sign-of-heart-attack-generic-version/f21_soha_chestpain_rgb_white.svg?rev=431fdaff59334013bdb76aa818e8b45d&la=en&h=576&w=768&hash=AC7F17E22367D2FE207C4F1318BBE6F5) Chest discomfort Pressure, squeezing, fullness or pain, burning or heaviness - ![Sweating](https://www.heartandstroke.ca/-/media/sites/hsf/svg/sign-of-heart-attack-generic-version/f21_soha_sweating_rgb_white.svg?rev=12a975fe7a834cc6815cf3bd33eb3526&la=en&h=576&w=768&hash=B3A3FE464A524835EB55500A05F00C65) Sweating - ![Upper body discomfort](https://www.heartandstroke.ca/-/media/sites/hsf/svg/sign-of-heart-attack-generic-version/f21_soha_upperbodydiscomfort_rgb_white.svg?rev=1e619619245643ef9320ec33db250fa7&la=en&h=576&w=768&hash=73B48AA93357CABA4028016731ABBFF3) Upper body discomfort Neck, jaw, shoulder, arms, back - ![Nausea](https://www.heartandstroke.ca/-/media/sites/hsf/svg/sign-of-heart-attack-generic-version/f21_soha_nausea_rgb_white.svg?rev=1da71b8dbc6d476d822fd12a116c4107&la=en&h=576&w=768&hash=FC18E95A528D94B1996CF7BDF59DC6A0) Nausea - ![Shortness of breath](https://www.heartandstroke.ca/-/media/sites/hsf/svg/sign-of-heart-attack-generic-version/f21_soha_shortnessofbreath_rgb_white.svg?rev=4e1322c3aa274419a8b36f390bb57ea9&la=en&h=576&w=768&hash=7183999F0CE92CA6B2CC7CEFA735C986) Shortness of breath - ![Light-headedness](https://www.heartandstroke.ca/-/media/sites/hsf/svg/sign-of-heart-attack-generic-version/f21_soha_lightheadedness_rgb_white.svg?rev=4c1e0801085b4a83910bed953660d328&la=en&h=576&w=768&hash=10CE49FA98C3A4B197CFA9473D67A96A) Light-headedness ## Women’s signs of heart attack The most common heart attack sign is chest pain or discomfort; however, women can experience a heart attack without chest pressure. They may experience shortness of breath, pressure or pain in the lower chest or upper abdomen, dizziness, lightheadedness or fainting, upper back pressure or extreme fatigue. ### 1\. Call 9-1-1 and shout for an AED Or call your local emergency number right away. AED’s are often in public places. The 9-1-1 operator may be able to tell you where the nearest one is. ### 2\. Stop all activity Sit or lie down, in whatever position is most comfortable. ### 3\. Take your nitroglycerin If you take nitroglycerin, take your normal dosage. ### 4\. Take ASA (Aspirin) Chew and swallow ASA (Aspirin), if you are not allergic or intolerant (either one 325 mg tablet or two 81 mg tablets). ### 5\. Rest and wait Stay calm while waiting for help to arrive. ### 6\. Keep a list of your medications in your wallet and by the phone. Emergency personnel will want this information. ## Signs of cardiac arrest If the heart stops beating, blood stops flowing to the brain, heart and other vital organs. Brain injury can begin within minutes. 1. Sudden collapse 2. Loss of consciousness 3. Unresponsiveness to touch or sound 4. Not breathing or not breathing normally ### 1\. Call 9-1-1 and shout for an AED Or call your local emergency number right away. AEDs can be found in many public locations. The 9-1-1 call taker may be able to tell you or another bystander where to find the nearest AED. ### 2\. Start CPR right away Push hard and fast in the centre of the chest at about 100 to 120 beats per minute. Give two breaths, if willing, after every 30 compressions, especially in emergencies involving children and infants. Doing CPR immediately, even if it’s not perfect, gives the person their best chance of survival. You can’t hurt, you can only help. ### 3\. Use an AED as soon as one is available An AED, or automated external defibrillator, is a portable electronic device that’s safe and easy to use. Simply turn it on and follow the voice prompts. It will only deliver a shock to restart the heart if needed. ## Signs of SADs SADS (Sudden Arrhythmia Death Syndromes) covers a variety of cardiac disorders which are often genetic and can cause sudden death in young, apparently healthy people. 1. Fainting or seizure during physical activity 2. Fainting or seizure from distress or being startled. 3. Family history of death that is sudden, unexplained.
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