🕷️ Crawler Inspector

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Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 173 (from laksa048)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa173.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.pennmedicine.org/conditions/cardiac-arrhythmia\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.pennmedicine.org/conditions/cardiac-arrhythmia\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.pennmedicine.org\/conditions\/cardiac-arrhythmia","crawl_time":1776028448,"first_indexed_time":1751438544,"http_code":200,"src_unparsed":"org,pennmedicine!www,\/conditions\/cardiac-arrhythmia s443","src_root_hash":"11763615100892604773","history_drop_reason":null,"meta_title":"Arrhythmia – Symptoms and Causes | Penn Medicine","meta_descriptions":["A cardiac arrhythmia is an abnormal heartbeat resulting from malfunctioning electrical impulses that govern your heartbeat."],"attrs_boilerpipe_text":"What is an arrhythmia?\nA cardiac arrhythmia is an abnormal heartbeat resulting from malfunctioning electrical impulses that govern your heartbeat. With a cardiac arrhythmia, your heart may be beating too slowly, too quickly, or irregularly. This can feel like your heart is fluttering or racing in your chest.\nThere are several types of arrhythmias, including:\nTachycardia – rapid heartbeat with a rate of more than 100 beats per minute.\nBradycardia – a slow heartbeat with a rate of less than 60 beats per minute.\nVentricular arrhythmias – irregular heartbeats that originate in the lower chambers or ventricles.\nSupraventricular arrhythmias – irregular heartbeats that originate in the heart’s upper chambers or atria.\nBradyarrhythmias – slow heartbeats that may be caused by disease.\nSymptoms of a cardiac arrhythmia\nMany people may never notice their arrhythmias, or they may experience a slight fluttering or feeling of a skipped beat.\nYou could experience any of the following symptoms from an arrhythmia:\nHeart palpitations\nChest pain or pounding in the chest\nDizziness\nShortness of breath\nLightheadedness\nWeakness or fatigue\nFainting\nWhat causes a cardiac arrhythmia?\nHow irregular heartbeats are diagnosed\nIf you’re showing symptoms, you should make an appointment with a cardiologist or electrophysiologist to determine the cause and severity of your arrhythmia, and you may undergo one or more of the following tests:\nEchocardiogram\nAmbulatory monitoring such as a\nHolter monitor\n or transtelephonic monitor\nStress test\nCardiac catheterization\nElectrocardiogram\n(ECG or EKG)\nElectrophysiology study\nTilt table test\nArrhythmia treatment at Penn Medicine\nMedications and lifestyle changes may be all you need to treat and control your arrhythmia. However, if you require the next step in treatment, know that Penn Medicine is a national and international leader the most common treatments for cardiac arrhythmias, including implantable cardio defibrillators (ICD), catheter ablations and open heart surgery. Penn surgeons take on the most challenging cases, offering a variety of approaches not commonly available at other medical centers.\nWhen you choose Penn Medicine, you’re choosing to work with a dedicated team of cardiologists and electrophysiologists who have pioneered and long perfected these treatments, leading the field in new research and innovation.\nRelated specialties\nPatient stories","attrs_markdown":"[800-789-7366](tel:8007897366)\n\n[Patient login](https:\/\/secure.mypennmedicine.org\/MyPennMedicine\/)\n\n[![Penn Medicine Home](https:\/\/edge.sitecorecloud.io\/thetrusteesc483-pennmedicine-prod-fab7\/media\/Project\/PennMedicine\/Logos\/pm.svg?iar=0)](https:\/\/www.pennmedicine.org\/)\n\n- [Get care](https:\/\/www.pennmedicine.org\/Get-care)\n- [Find a doctor](https:\/\/www.pennmedicine.org\/Find-Doctor)\n- Specialties & services\n- Locations\n- For patients & visitors\n- Search\n\n# Cardiac arrhythmia\n[Find a doctor](https:\/\/www.pennmedicine.org\/Find-Doctor\/Search?condition=85c6079a-62ab-4517-b665-27533020b532)\n\n[Call 800-789-7366](tel:\/\/+1-800-789-7366)\n\n## What is an arrhythmia?\nA cardiac arrhythmia is an abnormal heartbeat resulting from malfunctioning electrical impulses that govern your heartbeat. With a cardiac arrhythmia, your heart may be beating too slowly, too quickly, or irregularly. This can feel like your heart is fluttering or racing in your chest.\n\nThere are several types of arrhythmias, including:\n\n- Tachycardia – rapid heartbeat with a rate of more than 100 beats per minute.\n- Bradycardia – a slow heartbeat with a rate of less than 60 beats per minute.\n- Ventricular arrhythmias – irregular heartbeats that originate in the lower chambers or ventricles.\n- Supraventricular arrhythmias – irregular heartbeats that originate in the heart’s upper chambers or atria.\n- Bradyarrhythmias – slow heartbeats that may be caused by disease.\n\n## Symptoms of a cardiac arrhythmia\nMany people may never notice their arrhythmias, or they may experience a slight fluttering or feeling of a skipped beat.\n\nYou could experience any of the following symptoms from an arrhythmia:\n\n- Heart palpitations\n- Chest pain or pounding in the chest\n- Dizziness\n- Shortness of breath\n- Lightheadedness\n- Weakness or fatigue\n- Fainting\n\n## What causes a cardiac arrhythmia?\nMany things can cause cardiac arrhythmia, including the following:\n\n- [High blood pressure](https:\/\/www.pennmedicine.org\/Conditions\/Hypertension)\n- [Valve disorders](https:\/\/www.pennmedicine.org\/Specialties\/Heart-valve-disease-care)\n- [Cardiomyopathy](https:\/\/www.pennmedicine.org\/Conditions\/Cardiomyopathy)\n- [Coronary artery disease](https:\/\/www.pennmedicine.org\/Conditions\/Coronary-artery-disease)\n- Electrolyte imbalances\n- Heart attack injury, such as scarring\n- [Diabetes](https:\/\/www.pennmedicine.org\/Specialties\/Diabetes-care)\n- Smoking\n- [Alcohol overconsumption](https:\/\/www.pennmedicine.org\/adam-data\/conditions\/2025\/04\/21\/19\/50\/Alcohol-use-disorder)\n- Too much caffeine\n- Some prescription medications\n- Stress\n- Drug abuse\n- Thyroid issues ([hyperthyroidism](https:\/\/www.pennmedicine.org\/Conditions\/Hyperthyroidism) and [hypothyroidism](https:\/\/www.pennmedicine.org\/Conditions\/Hypothyroidism))\n\n## How irregular heartbeats are diagnosed\nIf you’re showing symptoms, you should make an appointment with a cardiologist or electrophysiologist to determine the cause and severity of your arrhythmia, and you may undergo one or more of the following tests:\n\n- [Echocardiogram](https:\/\/www.pennmedicine.org\/adam-data\/treatments\/2025\/06\/12\/17\/31\/Echocardiogram)\n- Ambulatory monitoring such as a [Holter monitor](https:\/\/www.pennmedicine.org\/adam-data\/treatments\/2025\/06\/12\/17\/31\/Holter-monitor-24h) or transtelephonic monitor\n- [Stress test](https:\/\/www.pennmedicine.org\/adam-data\/treatments\/2025\/06\/12\/17\/31\/Exercise-stress-test)\n- [Cardiac catheterization](https:\/\/www.pennmedicine.org\/Treatments\/Cardiac-catheterization)\n- [Electrocardiogram](https:\/\/www.pennmedicine.org\/adam-data\/treatments\/2025\/06\/12\/17\/31\/Electrocardiogram) (ECG or EKG)\n- Electrophysiology study\n- Tilt table test\n\n## Arrhythmia treatment at Penn Medicine\nMedications and lifestyle changes may be all you need to treat and control your arrhythmia. However, if you require the next step in treatment, know that Penn Medicine is a national and international leader the most common treatments for cardiac arrhythmias, including implantable cardio defibrillators (ICD), catheter ablations and open heart surgery. Penn surgeons take on the most challenging cases, offering a variety of approaches not commonly available at other medical centers.\n\nWhen you choose Penn Medicine, you’re choosing to work with a dedicated team of cardiologists and electrophysiologists who have pioneered and long perfected these treatments, leading the field in new research and innovation.\n\n## Related specialties\n[Cardiac arrhythmia care When an abnormal heartbeat sounds the alarm, we seek the cause and work to restore a healthy rhythm.](https:\/\/www.pennmedicine.org\/specialties\/cardiac-arrhythmia-care)\n\n[Cardiology We specialize in diagnosing and treating cardiovascular conditions, from routine care to complex issues.](https:\/\/www.pennmedicine.org\/specialties\/primary-cardiology)\n\n[Heart and vascular care Our clinicians, researchers, and educators provide comprehensive, best-in-class heart and vascular care.](https:\/\/www.pennmedicine.org\/specialties\/heart-vascular-care)\n\n[Women’s cardiovascular health We specialize in women’s cardiovascular health—diagnosing and treating all heart conditions.](https:\/\/www.pennmedicine.org\/specialties\/womens-cardiovascular-health)\n\n## Patient stories\n![ A runner’s rapid save](https:\/\/tupa-q-001.sitecorecontenthub.cloud\/api\/public\/content\/df896bef7e6b4ed1a042b110fd826d21?v=c0fcf142)\n\n## A runner’s rapid save\nA pulmonary embolism is life-threatening—and urgent. For Molly Fadden, Penn Medicine was ready to get her to the right experts, right in time.\n\n[Learn More](https:\/\/www.pennmedicine.org\/news\/a-runners-rapid-save)\n\n![Father and son undergo aortic repairs a year apart](https:\/\/tupa-q-001.sitecorecontenthub.cloud\/api\/public\/content\/c2422fedfac84ed785239ee331039a08?v=2d52a4c2)\n\n## Father and son undergo aortic repairs a year apart\nA father and son share a genetic heart condition called bicuspid aortic valve and had successful surgeries at Penn Medicine a year apart.\n\n[Learn More](https:\/\/www.pennmedicine.org\/news\/father-and-son-undergo-aortic-repairs)\n\n![Embracing life’s rhythm: Kathleen’s robotic surgery journey](https:\/\/tupa-q-001.sitecorecontenthub.cloud\/api\/public\/content\/0394df93fd4b4c33af7516db497fd184?v=6ac0cca7&t=16x9)\n\n## Embracing life’s rhythm: Kathleen’s robotic surgery journey\nKathleen Tierney talks about her journey having robotic mitral valve surgery performed at Penn Medicine.\n\n[Learn More](https:\/\/www.pennmedicine.org\/news\/embracing-lifes-rhythm-kathleens-robotic-surgery-journey)\n\n![A new way to treat Afib: Pulsed field ablation](https:\/\/tupa-q-001.sitecorecontenthub.cloud\/api\/public\/content\/fc5e5d25601e480eb9beb0f915d2757b?v=9c0133cf)\n\n## A new way to treat Afib: Pulsed field ablation\nRick Smith chose pulsed field ablation for its precision and faster recovery. One month later, he’s back on the road, grateful for the care he received.\n\n[Learn More](https:\/\/www.pennmedicine.org\/news\/a-new-way-to-treat-afib-pulsed-field-ablation)\n\n![A hole in the heart repaired](https:\/\/tupa-q-001.sitecorecontenthub.cloud\/api\/public\/content\/70e3e4d456384138aa7cf5207c2237db?v=035a4782)\n\n## A hole in the heart repaired\nAfter a heart attack, Vilma Patel's family brought her from India to Lancaster for lifesaving VSD repair.\n\n[Learn More](https:\/\/www.pennmedicine.org\/news\/a-hole-in-the-heart-repaired)\n\n![A skipped heartbeat reveals a silent and serious heart risk](https:\/\/tupa-q-001.sitecorecontenthub.cloud\/api\/public\/content\/5d501720bb704d7d830c78140bea72dd?v=37e00594)\n\n## A skipped heartbeat reveals a silent and serious heart risk\nA healthy, active man was alarmed to notice his heart was skipping a beat, revealing a thoracic aortic aneurysm and a bicuspid aortic valve (BAV).\n\n[Learn More](https:\/\/www.pennmedicine.org\/news\/skipped-heartbeat-reveals-silent-and-serious-heart-risk)\n\n![ A runner’s rapid save](https:\/\/tupa-q-001.sitecorecontenthub.cloud\/api\/public\/content\/df896bef7e6b4ed1a042b110fd826d21?v=c0fcf142)\n\n## A runner’s rapid save\nA pulmonary embolism is life-threatening—and urgent. For Molly Fadden, Penn Medicine was ready to get her to the right experts, right in time.\n\n[Learn More](https:\/\/www.pennmedicine.org\/news\/a-runners-rapid-save)\n\n![Father and son undergo aortic repairs a year apart](https:\/\/tupa-q-001.sitecorecontenthub.cloud\/api\/public\/content\/c2422fedfac84ed785239ee331039a08?v=2d52a4c2)\n\n## Father and son undergo aortic repairs a year apart\nA father and son share a genetic heart condition called bicuspid aortic valve and had successful surgeries at Penn Medicine a year apart.\n\n[Learn More](https:\/\/www.pennmedicine.org\/news\/father-and-son-undergo-aortic-repairs)\n\n![Embracing life’s rhythm: Kathleen’s robotic surgery journey](https:\/\/tupa-q-001.sitecorecontenthub.cloud\/api\/public\/content\/0394df93fd4b4c33af7516db497fd184?v=6ac0cca7&t=16x9)\n\n## Embracing life’s rhythm: Kathleen’s robotic surgery journey\nKathleen Tierney talks about her journey having robotic mitral valve surgery performed at Penn Medicine.\n\n[Learn More](https:\/\/www.pennmedicine.org\/news\/embracing-lifes-rhythm-kathleens-robotic-surgery-journey)\n\n![A new way to treat Afib: Pulsed field ablation](https:\/\/tupa-q-001.sitecorecontenthub.cloud\/api\/public\/content\/fc5e5d25601e480eb9beb0f915d2757b?v=9c0133cf)\n\n## A new way to treat Afib: Pulsed field ablation\nRick Smith chose pulsed field ablation for its precision and faster recovery. One month later, he’s back on the road, grateful for the care he received.\n\n[Learn More](https:\/\/www.pennmedicine.org\/news\/a-new-way-to-treat-afib-pulsed-field-ablation)\n\n![A hole in the heart repaired](https:\/\/tupa-q-001.sitecorecontenthub.cloud\/api\/public\/content\/70e3e4d456384138aa7cf5207c2237db?v=035a4782)\n\n## A hole in the heart repaired\nAfter a heart attack, Vilma Patel's family brought her from India to Lancaster for lifesaving VSD repair.\n\n[Learn More](https:\/\/www.pennmedicine.org\/news\/a-hole-in-the-heart-repaired)\n\n![A skipped heartbeat reveals a silent and serious heart risk](https:\/\/tupa-q-001.sitecorecontenthub.cloud\/api\/public\/content\/5d501720bb704d7d830c78140bea72dd?v=37e00594)\n\n## A skipped heartbeat reveals a silent and serious heart risk\nA healthy, active man was alarmed to notice his heart was skipping a beat, revealing a thoracic aortic aneurysm and a bicuspid aortic valve (BAV).\n\n[Learn More](https:\/\/www.pennmedicine.org\/news\/skipped-heartbeat-reveals-silent-and-serious-heart-risk)\n\n### Schedule an appointment\nWe can help you schedule an appointment or you can search our directory of specialists.\n\n[Find a doctor](https:\/\/www.pennmedicine.org\/Find-Doctor?condition=85c6079a-62ab-4517-b665-27533020b532)\n\n[Call 800-789-7366](tel:\/\/+1-800-789-7366)\n\n- Learn more about Penn Medicine\n  - - [About us](https:\/\/www.pennmedicine.org\/About)\n    - [Pioneering the future of medicine](https:\/\/www.pennmedicine.org\/About\/Pioneering-the-future-of-medicine)\n    - [Transforming patient care](https:\/\/www.pennmedicine.org\/About\/Transforming-patient-care)\n    - [Supporting our communities](https:\/\/www.pennmedicine.org\/Supporting-our-communities)\n- For healthcare professionals\n  - - [Refer a patient](https:\/\/www.pennmedicine.org\/Physician-resources\/Refer-patient)\n    - [PhysicianLink login](https:\/\/secure3.pennmedicine.org\/EpicLink\/common\/epic_login.asp)\n    - [Physician resources](https:\/\/www.pennmedicine.org\/Physician-resources)\n- For international patients\n  - - [Global medicine](https:\/\/www.pennmedicine.org\/Global-medicine)\n- Ways to help\n  - - [Giving](https:\/\/www.pennmedicine.org\/Giving)\n    - [Volunteering](https:\/\/www.pennmedicine.org\/Volunteering)\n    - [Organ donation](https:\/\/www.pennmedicine.org\/Specialties\/Transplant\/Living-organ-donation)\n    - [Patient & family advisors](https:\/\/www.pennmedicine.org\/Patient-resources\/Information-for-patients\/Patient-family-advisory-councils)\n- Research & innovations\n  - - [Research](https:\/\/www.pennmedicine.org\/Research)\n    - [Office of Clinical Research](https:\/\/www.med.upenn.edu\/clinicalresearch)\n- For employees\n  - - [Employee resources](https:\/\/www.pennmedicine.org\/Employee-resources)\n- News and events\n  - - [News & views](https:\/\/www.pennmedicine.org\/News)\n    - [News releases](https:\/\/www.pennmedicine.org\/News\/Search)\n    - [News media resources](https:\/\/www.pennmedicine.org\/News\/Media-resources)\n    - [Events](https:\/\/www.pennmedicine.org\/Events)\n- Join us\n  - - [Careers](https:\/\/careers.pennmedicine.org\/)\n- For students & academics\n  - - [Academic departments](https:\/\/www3.pennmedicine.org\/departments-and-centers)\n    - [Fellowship & residency programs](https:\/\/www3.pennmedicine.org\/for-health-care-professionals\/fellowship-and-residency-programs\/)\n    - [Perelman School of Medicine](https:\/\/www.med.upenn.edu\/)\n\n- [Contact us](https:\/\/www.pennmedicine.org\/Contact-us)\n- [HIPAA & privacy](https:\/\/www.pennmedicine.org\/Hipaa-and-privacy)\n- [Terms of use](https:\/\/www.pennmedicine.org\/Patient-resources\/Policies\/Terms-of-use)\n- [Legal disclaimer](https:\/\/www.pennmedicine.org\/Patient-resources\/Policies\/Legal-disclaimer)\n- [Price transparency](https:\/\/www.pennmedicine.org\/Patient-resources\/Policies\/Pricing-transparency)\n\n- Penn Medicine, Philadelphia, PA 800-789-7366 © 2025, The Trustees of the University of Pennsylvania","attrs_readable_markdown":"What is an arrhythmia?\n\nA cardiac arrhythmia is an abnormal heartbeat resulting from malfunctioning electrical impulses that govern your heartbeat. With a cardiac arrhythmia, your heart may be beating too slowly, too quickly, or irregularly. This can feel like your heart is fluttering or racing in your chest.\n\nThere are several types of arrhythmias, including:\n\n- Tachycardia – rapid heartbeat with a rate of more than 100 beats per minute.\n- Bradycardia – a slow heartbeat with a rate of less than 60 beats per minute.\n- Ventricular arrhythmias – irregular heartbeats that originate in the lower chambers or ventricles.\n- Supraventricular arrhythmias – irregular heartbeats that originate in the heart’s upper chambers or atria.\n- Bradyarrhythmias – slow heartbeats that may be caused by disease.\n\nSymptoms of a cardiac arrhythmia\n\nMany people may never notice their arrhythmias, or they may experience a slight fluttering or feeling of a skipped beat.\n\nYou could experience any of the following symptoms from an arrhythmia:\n\n- Heart palpitations\n- Chest pain or pounding in the chest\n- Dizziness\n- Shortness of breath\n- Lightheadedness\n- Weakness or fatigue\n- Fainting\n\nWhat causes a cardiac arrhythmia?\n\nHow irregular heartbeats are diagnosed\n\nIf you’re showing symptoms, you should make an appointment with a cardiologist or electrophysiologist to determine the cause and severity of your arrhythmia, and you may undergo one or more of the following tests:\n\n- [Echocardiogram](https:\/\/www.pennmedicine.org\/adam-data\/treatments\/2025\/06\/12\/17\/31\/Echocardiogram)\n- Ambulatory monitoring such as a [Holter monitor](https:\/\/www.pennmedicine.org\/adam-data\/treatments\/2025\/06\/12\/17\/31\/Holter-monitor-24h) or transtelephonic monitor\n- [Stress test](https:\/\/www.pennmedicine.org\/adam-data\/treatments\/2025\/06\/12\/17\/31\/Exercise-stress-test)\n- [Cardiac catheterization](https:\/\/www.pennmedicine.org\/Treatments\/Cardiac-catheterization)\n- [Electrocardiogram](https:\/\/www.pennmedicine.org\/adam-data\/treatments\/2025\/06\/12\/17\/31\/Electrocardiogram) (ECG or EKG)\n- Electrophysiology study\n- Tilt table test\n\nArrhythmia treatment at Penn Medicine\n\nMedications and lifestyle changes may be all you need to treat and control your arrhythmia. However, if you require the next step in treatment, know that Penn Medicine is a national and international leader the most common treatments for cardiac arrhythmias, including implantable cardio defibrillators (ICD), catheter ablations and open heart surgery. Penn surgeons take on the most challenging cases, offering a variety of approaches not commonly available at other medical centers.\n\nWhen you choose Penn Medicine, you’re choosing to work with a dedicated team of cardiologists and electrophysiologists who have pioneered and long perfected these treatments, leading the field in new research and innovation.\n\nRelated specialties\n\nPatient stories","meta_canonical":null}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

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Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📄

INDEXABLE

✅

CRAWLED

1 day ago

🤖

ROBOTS ALLOWED

Page Info Filters

Filter	Status	Condition	Details
HTTP status	PASS	`download_http_code = 200`	HTTP 200
Age cutoff	PASS	`download_stamp > now() - 6 MONTH`	0.1 months ago
History drop	PASS	`isNull(history_drop_reason)`	No drop reason
Spam/ban	PASS	`fh_dont_index != 1 AND ml_spam_score = 0`	ml_spam_score=0
Canonical	PASS	`meta_canonical IS NULL OR = '' OR = src_unparsed`	Not set

Page Details

Property	Value
URL	https://www.pennmedicine.org/conditions/cardiac-arrhythmia
Last Crawled	2026-04-12 21:14:08 (1 day ago)
First Indexed	2025-07-02 06:42:24 (9 months ago)
HTTP Status Code	200
Meta Title	Arrhythmia – Symptoms and Causes \| Penn Medicine
Meta Description	A cardiac arrhythmia is an abnormal heartbeat resulting from malfunctioning electrical impulses that govern your heartbeat.
Meta Canonical	null
Boilerpipe Text	What is an arrhythmia? A cardiac arrhythmia is an abnormal heartbeat resulting from malfunctioning electrical impulses that govern your heartbeat. With a cardiac arrhythmia, your heart may be beating too slowly, too quickly, or irregularly. This can feel like your heart is fluttering or racing in your chest. There are several types of arrhythmias, including: Tachycardia – rapid heartbeat with a rate of more than 100 beats per minute. Bradycardia – a slow heartbeat with a rate of less than 60 beats per minute. Ventricular arrhythmias – irregular heartbeats that originate in the lower chambers or ventricles. Supraventricular arrhythmias – irregular heartbeats that originate in the heart’s upper chambers or atria. Bradyarrhythmias – slow heartbeats that may be caused by disease. Symptoms of a cardiac arrhythmia Many people may never notice their arrhythmias, or they may experience a slight fluttering or feeling of a skipped beat. You could experience any of the following symptoms from an arrhythmia: Heart palpitations Chest pain or pounding in the chest Dizziness Shortness of breath Lightheadedness Weakness or fatigue Fainting What causes a cardiac arrhythmia? How irregular heartbeats are diagnosed If you’re showing symptoms, you should make an appointment with a cardiologist or electrophysiologist to determine the cause and severity of your arrhythmia, and you may undergo one or more of the following tests: Echocardiogram Ambulatory monitoring such as a Holter monitor or transtelephonic monitor Stress test Cardiac catheterization Electrocardiogram (ECG or EKG) Electrophysiology study Tilt table test Arrhythmia treatment at Penn Medicine Medications and lifestyle changes may be all you need to treat and control your arrhythmia. However, if you require the next step in treatment, know that Penn Medicine is a national and international leader the most common treatments for cardiac arrhythmias, including implantable cardio defibrillators (ICD), catheter ablations and open heart surgery. Penn surgeons take on the most challenging cases, offering a variety of approaches not commonly available at other medical centers. When you choose Penn Medicine, you’re choosing to work with a dedicated team of cardiologists and electrophysiologists who have pioneered and long perfected these treatments, leading the field in new research and innovation. Related specialties Patient stories
Markdown	[800-789-7366](tel:8007897366) [Patient login](https://secure.mypennmedicine.org/MyPennMedicine/) [![Penn Medicine Home](https://edge.sitecorecloud.io/thetrusteesc483-pennmedicine-prod-fab7/media/Project/PennMedicine/Logos/pm.svg?iar=0)](https://www.pennmedicine.org/) - [Get care](https://www.pennmedicine.org/Get-care) - [Find a doctor](https://www.pennmedicine.org/Find-Doctor) - Specialties & services - Locations - For patients & visitors - Search # Cardiac arrhythmia [Find a doctor](https://www.pennmedicine.org/Find-Doctor/Search?condition=85c6079a-62ab-4517-b665-27533020b532) [Call 800-789-7366](tel://+1-800-789-7366) ## What is an arrhythmia? A cardiac arrhythmia is an abnormal heartbeat resulting from malfunctioning electrical impulses that govern your heartbeat. With a cardiac arrhythmia, your heart may be beating too slowly, too quickly, or irregularly. This can feel like your heart is fluttering or racing in your chest. There are several types of arrhythmias, including: - Tachycardia – rapid heartbeat with a rate of more than 100 beats per minute. - Bradycardia – a slow heartbeat with a rate of less than 60 beats per minute. - Ventricular arrhythmias – irregular heartbeats that originate in the lower chambers or ventricles. - Supraventricular arrhythmias – irregular heartbeats that originate in the heart’s upper chambers or atria. - Bradyarrhythmias – slow heartbeats that may be caused by disease. ## Symptoms of a cardiac arrhythmia Many people may never notice their arrhythmias, or they may experience a slight fluttering or feeling of a skipped beat. You could experience any of the following symptoms from an arrhythmia: - Heart palpitations - Chest pain or pounding in the chest - Dizziness - Shortness of breath - Lightheadedness - Weakness or fatigue - Fainting ## What causes a cardiac arrhythmia? Many things can cause cardiac arrhythmia, including the following: - [High blood pressure](https://www.pennmedicine.org/Conditions/Hypertension) - [Valve disorders](https://www.pennmedicine.org/Specialties/Heart-valve-disease-care) - [Cardiomyopathy](https://www.pennmedicine.org/Conditions/Cardiomyopathy) - [Coronary artery disease](https://www.pennmedicine.org/Conditions/Coronary-artery-disease) - Electrolyte imbalances - Heart attack injury, such as scarring - [Diabetes](https://www.pennmedicine.org/Specialties/Diabetes-care) - Smoking - [Alcohol overconsumption](https://www.pennmedicine.org/adam-data/conditions/2025/04/21/19/50/Alcohol-use-disorder) - Too much caffeine - Some prescription medications - Stress - Drug abuse - Thyroid issues ([hyperthyroidism](https://www.pennmedicine.org/Conditions/Hyperthyroidism) and [hypothyroidism](https://www.pennmedicine.org/Conditions/Hypothyroidism)) ## How irregular heartbeats are diagnosed If you’re showing symptoms, you should make an appointment with a cardiologist or electrophysiologist to determine the cause and severity of your arrhythmia, and you may undergo one or more of the following tests: - [Echocardiogram](https://www.pennmedicine.org/adam-data/treatments/2025/06/12/17/31/Echocardiogram) - Ambulatory monitoring such as a [Holter monitor](https://www.pennmedicine.org/adam-data/treatments/2025/06/12/17/31/Holter-monitor-24h) or transtelephonic monitor - [Stress test](https://www.pennmedicine.org/adam-data/treatments/2025/06/12/17/31/Exercise-stress-test) - [Cardiac catheterization](https://www.pennmedicine.org/Treatments/Cardiac-catheterization) - [Electrocardiogram](https://www.pennmedicine.org/adam-data/treatments/2025/06/12/17/31/Electrocardiogram) (ECG or EKG) - Electrophysiology study - Tilt table test ## Arrhythmia treatment at Penn Medicine Medications and lifestyle changes may be all you need to treat and control your arrhythmia. However, if you require the next step in treatment, know that Penn Medicine is a national and international leader the most common treatments for cardiac arrhythmias, including implantable cardio defibrillators (ICD), catheter ablations and open heart surgery. Penn surgeons take on the most challenging cases, offering a variety of approaches not commonly available at other medical centers. When you choose Penn Medicine, you’re choosing to work with a dedicated team of cardiologists and electrophysiologists who have pioneered and long perfected these treatments, leading the field in new research and innovation. ## Related specialties [Cardiac arrhythmia care When an abnormal heartbeat sounds the alarm, we seek the cause and work to restore a healthy rhythm.](https://www.pennmedicine.org/specialties/cardiac-arrhythmia-care) [Cardiology We specialize in diagnosing and treating cardiovascular conditions, from routine care to complex issues.](https://www.pennmedicine.org/specialties/primary-cardiology) [Heart and vascular care Our clinicians, researchers, and educators provide comprehensive, best-in-class heart and vascular care.](https://www.pennmedicine.org/specialties/heart-vascular-care) [Women’s cardiovascular health We specialize in women’s cardiovascular health—diagnosing and treating all heart conditions.](https://www.pennmedicine.org/specialties/womens-cardiovascular-health) ## Patient stories ![ A runner’s rapid save](https://tupa-q-001.sitecorecontenthub.cloud/api/public/content/df896bef7e6b4ed1a042b110fd826d21?v=c0fcf142) ## A runner’s rapid save A pulmonary embolism is life-threatening—and urgent. For Molly Fadden, Penn Medicine was ready to get her to the right experts, right in time. [Learn More](https://www.pennmedicine.org/news/a-runners-rapid-save) ![Father and son undergo aortic repairs a year apart](https://tupa-q-001.sitecorecontenthub.cloud/api/public/content/c2422fedfac84ed785239ee331039a08?v=2d52a4c2) ## Father and son undergo aortic repairs a year apart A father and son share a genetic heart condition called bicuspid aortic valve and had successful surgeries at Penn Medicine a year apart. [Learn More](https://www.pennmedicine.org/news/father-and-son-undergo-aortic-repairs) ![Embracing life’s rhythm: Kathleen’s robotic surgery journey](https://tupa-q-001.sitecorecontenthub.cloud/api/public/content/0394df93fd4b4c33af7516db497fd184?v=6ac0cca7&t=16x9) ## Embracing life’s rhythm: Kathleen’s robotic surgery journey Kathleen Tierney talks about her journey having robotic mitral valve surgery performed at Penn Medicine. [Learn More](https://www.pennmedicine.org/news/embracing-lifes-rhythm-kathleens-robotic-surgery-journey) ![A new way to treat Afib: Pulsed field ablation](https://tupa-q-001.sitecorecontenthub.cloud/api/public/content/fc5e5d25601e480eb9beb0f915d2757b?v=9c0133cf) ## A new way to treat Afib: Pulsed field ablation Rick Smith chose pulsed field ablation for its precision and faster recovery. One month later, he’s back on the road, grateful for the care he received. [Learn More](https://www.pennmedicine.org/news/a-new-way-to-treat-afib-pulsed-field-ablation) ![A hole in the heart repaired](https://tupa-q-001.sitecorecontenthub.cloud/api/public/content/70e3e4d456384138aa7cf5207c2237db?v=035a4782) ## A hole in the heart repaired After a heart attack, Vilma Patel's family brought her from India to Lancaster for lifesaving VSD repair. [Learn More](https://www.pennmedicine.org/news/a-hole-in-the-heart-repaired) ![A skipped heartbeat reveals a silent and serious heart risk](https://tupa-q-001.sitecorecontenthub.cloud/api/public/content/5d501720bb704d7d830c78140bea72dd?v=37e00594) ## A skipped heartbeat reveals a silent and serious heart risk A healthy, active man was alarmed to notice his heart was skipping a beat, revealing a thoracic aortic aneurysm and a bicuspid aortic valve (BAV). [Learn More](https://www.pennmedicine.org/news/skipped-heartbeat-reveals-silent-and-serious-heart-risk) ![ A runner’s rapid save](https://tupa-q-001.sitecorecontenthub.cloud/api/public/content/df896bef7e6b4ed1a042b110fd826d21?v=c0fcf142) ## A runner’s rapid save A pulmonary embolism is life-threatening—and urgent. For Molly Fadden, Penn Medicine was ready to get her to the right experts, right in time. [Learn More](https://www.pennmedicine.org/news/a-runners-rapid-save) ![Father and son undergo aortic repairs a year apart](https://tupa-q-001.sitecorecontenthub.cloud/api/public/content/c2422fedfac84ed785239ee331039a08?v=2d52a4c2) ## Father and son undergo aortic repairs a year apart A father and son share a genetic heart condition called bicuspid aortic valve and had successful surgeries at Penn Medicine a year apart. [Learn More](https://www.pennmedicine.org/news/father-and-son-undergo-aortic-repairs) ![Embracing life’s rhythm: Kathleen’s robotic surgery journey](https://tupa-q-001.sitecorecontenthub.cloud/api/public/content/0394df93fd4b4c33af7516db497fd184?v=6ac0cca7&t=16x9) ## Embracing life’s rhythm: Kathleen’s robotic surgery journey Kathleen Tierney talks about her journey having robotic mitral valve surgery performed at Penn Medicine. [Learn More](https://www.pennmedicine.org/news/embracing-lifes-rhythm-kathleens-robotic-surgery-journey) ![A new way to treat Afib: Pulsed field ablation](https://tupa-q-001.sitecorecontenthub.cloud/api/public/content/fc5e5d25601e480eb9beb0f915d2757b?v=9c0133cf) ## A new way to treat Afib: Pulsed field ablation Rick Smith chose pulsed field ablation for its precision and faster recovery. One month later, he’s back on the road, grateful for the care he received. [Learn More](https://www.pennmedicine.org/news/a-new-way-to-treat-afib-pulsed-field-ablation) ![A hole in the heart repaired](https://tupa-q-001.sitecorecontenthub.cloud/api/public/content/70e3e4d456384138aa7cf5207c2237db?v=035a4782) ## A hole in the heart repaired After a heart attack, Vilma Patel's family brought her from India to Lancaster for lifesaving VSD repair. [Learn More](https://www.pennmedicine.org/news/a-hole-in-the-heart-repaired) ![A skipped heartbeat reveals a silent and serious heart risk](https://tupa-q-001.sitecorecontenthub.cloud/api/public/content/5d501720bb704d7d830c78140bea72dd?v=37e00594) ## A skipped heartbeat reveals a silent and serious heart risk A healthy, active man was alarmed to notice his heart was skipping a beat, revealing a thoracic aortic aneurysm and a bicuspid aortic valve (BAV). [Learn More](https://www.pennmedicine.org/news/skipped-heartbeat-reveals-silent-and-serious-heart-risk) ### Schedule an appointment We can help you schedule an appointment or you can search our directory of specialists. 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Readable Markdown	What is an arrhythmia? A cardiac arrhythmia is an abnormal heartbeat resulting from malfunctioning electrical impulses that govern your heartbeat. With a cardiac arrhythmia, your heart may be beating too slowly, too quickly, or irregularly. This can feel like your heart is fluttering or racing in your chest. There are several types of arrhythmias, including: - Tachycardia – rapid heartbeat with a rate of more than 100 beats per minute. - Bradycardia – a slow heartbeat with a rate of less than 60 beats per minute. - Ventricular arrhythmias – irregular heartbeats that originate in the lower chambers or ventricles. - Supraventricular arrhythmias – irregular heartbeats that originate in the heart’s upper chambers or atria. - Bradyarrhythmias – slow heartbeats that may be caused by disease. Symptoms of a cardiac arrhythmia Many people may never notice their arrhythmias, or they may experience a slight fluttering or feeling of a skipped beat. You could experience any of the following symptoms from an arrhythmia: - Heart palpitations - Chest pain or pounding in the chest - Dizziness - Shortness of breath - Lightheadedness - Weakness or fatigue - Fainting What causes a cardiac arrhythmia? How irregular heartbeats are diagnosed If you’re showing symptoms, you should make an appointment with a cardiologist or electrophysiologist to determine the cause and severity of your arrhythmia, and you may undergo one or more of the following tests: - [Echocardiogram](https://www.pennmedicine.org/adam-data/treatments/2025/06/12/17/31/Echocardiogram) - Ambulatory monitoring such as a [Holter monitor](https://www.pennmedicine.org/adam-data/treatments/2025/06/12/17/31/Holter-monitor-24h) or transtelephonic monitor - [Stress test](https://www.pennmedicine.org/adam-data/treatments/2025/06/12/17/31/Exercise-stress-test) - [Cardiac catheterization](https://www.pennmedicine.org/Treatments/Cardiac-catheterization) - [Electrocardiogram](https://www.pennmedicine.org/adam-data/treatments/2025/06/12/17/31/Electrocardiogram) (ECG or EKG) - Electrophysiology study - Tilt table test Arrhythmia treatment at Penn Medicine Medications and lifestyle changes may be all you need to treat and control your arrhythmia. However, if you require the next step in treatment, know that Penn Medicine is a national and international leader the most common treatments for cardiac arrhythmias, including implantable cardio defibrillators (ICD), catheter ablations and open heart surgery. Penn surgeons take on the most challenging cases, offering a variety of approaches not commonly available at other medical centers. When you choose Penn Medicine, you’re choosing to work with a dedicated team of cardiologists and electrophysiologists who have pioneered and long perfected these treatments, leading the field in new research and innovation. Related specialties Patient stories
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