Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias01:25

ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias

Arrhythmia is a condition characterized by an irregular heart rhythm, with ECG changes that differ based on its origin and nature. The types of arrhythmias discussed below include atrial, junctional, and ventricular arrhythmias.Atrial ArrhythmiasPremature Atrial Complexes (PACs): PACs are early atrial beats caused by stress, caffeine, alcohol, electrolyte imbalances, hypoxia, hyperthyroidism, or certain medications (e.g., bronchodilators and decongestants). The ECG shows early P waves with an...
Dysrhythmias III: Characteristics of Dysrhythmias01:29

Dysrhythmias III: Characteristics of Dysrhythmias

Dysrhythmias, also known as arrhythmias, are irregular heart rhythms that result from abnormal electrical activity in the heart, affecting its ability to circulate blood efficiently. Tachyarrhythmias, a subset of dysrhythmias, are characterized by abnormally fast heart rates exceeding 100 beats per minute. Here are some types of tachyarrhythmias with their distinct ECG features:Sinus Tachycardia:Sinus tachycardia presents a regular heart rhythm with an increased rate of 101-180 beats per minute.
Disturbances in Heart Rhythm01:29

Disturbances in Heart Rhythm

Arrhythmia or dysrhythmia refers to an abnormal heart rhythm caused by a defect in the heart's conduction system. It can cause the heart to beat irregularly, too quickly, or too slowly, leading to symptoms like chest pain, shortness of breath, and fainting. Factors such as stress, caffeine, alcohol, nicotine, cocaine, certain drugs, congenital defects, diseases, and electrolyte abnormalities can trigger arrhythmias.
Arrhythmias are categorized by their speed, rhythm, and origin. A slow heart...
Dysrhythmias II: Classification of Tachyarrhythmias01:28

Dysrhythmias II: Classification of Tachyarrhythmias

Tachyarrhythmias are a type of dysrhythmia where the heart rate exceeds 100 beats per minute. Here are some common types of tachyarrhythmias:Sinus TachycardiaSinus tachycardia originates from increased impulses from the sinus node, leading to an elevated heart rate. It is often triggered by stress, fever, or exercise.Patients may experience palpitations, a sensation of a racing heart, dizziness, and chest discomfort.Causes and Risk Factors: Common causes include physical exertion, emotional...
Dysrhythmias IV: Characteristics of Bradyarrhythmias01:18

Dysrhythmias IV: Characteristics of Bradyarrhythmias

Bradyarrhythmias are cardiac rhythm disorders characterized by a slower-than-normal heart rate, typically defined as fewer than 60 beats per minute. Some of which are discussed here:Sinus BradycardiaSinus bradycardia presents a heart rate lower than 60 beats per minute, with a regular rhythm originating from the SA node. The ECG typically shows normal P waves preceding each QRS complex, a normal PR interval (0.12 to 0.20 seconds), and a normal QRS duration (0.06 to 0.10 seconds).First-Degree AV...
Dysrhythmias VI: Management of Dysrhythmias01:25

Dysrhythmias VI: Management of Dysrhythmias

Dysrhythmia management involves a multifaceted approach, incorporating pharmacological treatments, medical procedures, surgical interventions, lifestyle modifications, and patient education.Pharmacological ManagementAntiarrhythmic Drugs:Class I (Sodium Channel Blockers): This class includes quinidine and procainamide, which reduce the speed of impulse conduction in the heart, stabilize the cardiac membrane, and control arrhythmias. Quinidine and procainamide are Class IA agents that prolong the...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

19-month-old Girl with Seizure.

Clinical practice and cases in emergency medicine·2026
Same author

Applications of Augmented Reality for Prehospital Emergency Care: Systematic Review of Randomized Controlled Trials.

JMIR XR and spatial computing·2026
Same author

Consensus Statement on Pediatric Disaster Medicine Research Priorities.

JAMA network open·2026
Same author

The authors' responses: "Reader comment regarding prophylactic antibiotics for immunosuppressed individuals with anterior nasal packing: A propensity score matching study".

The American journal of emergency medicine·2026
Same author

Beyond the After-Action Review: Expert Consensus for Military-Civilian Pandemic Planning.

Disaster medicine and public health preparedness·2026
Same author

70-year-old Woman with Chest Tightness and Shortness of Breath.

Clinical practice and cases in emergency medicine·2026
Same journal

Why Dispelling Myths and Misconceptions in Emergency Medicine Matters.

Emergency medicine clinics of North America·2026
Same journal

Myths and Misconceptions in Emergency Medicine.

Emergency medicine clinics of North America·2026
Same journal

Acute Otitis Media-Watch and Wait Is Not a Myth.

Emergency medicine clinics of North America·2026
Same journal

Hot or Not? Myths and Misconceptions About Antipyretics for Pediatric Fever.

Emergency medicine clinics of North America·2026
Same journal

Epinephrine Improves Outcomes in Out-Of-Hospital Cardiac Arrests.

Emergency medicine clinics of North America·2026
Same journal

Myth: Pretreatment Prevents Intravenous Contrast Reactions in the Emergency Department.

Emergency medicine clinics of North America·2026
See all related articles

Related Experiment Video

Updated: May 28, 2026

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
28:13

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation

Published on: February 26, 2013

Atrial fibrillation.

Laura J Bontempo1, Eric Goralnick

  • 1Department of Emergency Medicine, Yale University, 464 Congress Avenue, New Haven, CT 06519, USA. laura.bontempo@yale.edu

Emergency Medicine Clinics of North America
|November 2, 2011
PubMed
Summary
This summary is machine-generated.

Atrial fibrillation (AF) is a common heart rhythm disorder affecting over 1% of the population. This article provides updated recommendations for managing AF, drawing from guidelines and new evidence.

More Related Videos

Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation
08:10

Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation

Published on: July 20, 2022

High-Resolution Endocardial and Epicardial Optical Mapping in a Sheep Model of Stretch-Induced Atrial Fibrillation
09:17

High-Resolution Endocardial and Epicardial Optical Mapping in a Sheep Model of Stretch-Induced Atrial Fibrillation

Published on: July 29, 2011

Related Experiment Videos

Last Updated: May 28, 2026

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
28:13

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation

Published on: February 26, 2013

Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation
08:10

Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation

Published on: July 20, 2022

High-Resolution Endocardial and Epicardial Optical Mapping in a Sheep Model of Stretch-Induced Atrial Fibrillation
09:17

High-Resolution Endocardial and Epicardial Optical Mapping in a Sheep Model of Stretch-Induced Atrial Fibrillation

Published on: July 29, 2011

Area of Science:

  • Cardiology
  • Electrophysiology
  • Public Health

Background:

  • Atrial fibrillation (AF) is the most frequent cardiac dysrhythmia in US emergency departments.
  • Prevalence increases with age, affecting 10% of individuals over 80.
  • Projected to impact 16 million Americans by 2050, posing significant health and economic challenges.

Purpose of the Study:

  • To present updated recommendations for atrial fibrillation management.
  • To synthesize existing guidelines with recent evidence and expert consensus.

Main Methods:

  • Review and integration of current clinical guidelines for AF.
  • Inclusion of supplementary evidence and expert consensus.
  • Development of actionable recommendations for clinical practice.

Main Results:

  • The article outlines a comprehensive set of recommendations for AF diagnosis and treatment.
  • Key areas covered include rhythm and rate control, stroke prevention, and management of comorbidities.
  • Emphasis is placed on a patient-centered approach to care.

Conclusions:

  • Updated recommendations aim to optimize the management of atrial fibrillation.
  • Evidence-based consensus provides a framework for improving patient outcomes.
  • Addressing the growing burden of AF is crucial for public health and healthcare systems.