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Related Concept Videos

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

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

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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...
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Dysrhythmias IV: Characteristics of Bradyarrhythmias01:18

Dysrhythmias IV: Characteristics of Bradyarrhythmias

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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...
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Disturbances in Heart Rhythm01:28

Disturbances in Heart Rhythm

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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...
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Dysrhythmias III: Characteristics of Dysrhythmias01:29

Dysrhythmias III: Characteristics of Dysrhythmias

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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...
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Dysrhythmias VI: Management of Dysrhythmias01:25

Dysrhythmias VI: Management of Dysrhythmias

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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...
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Chambers of the Heart01:16

Chambers of the Heart

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The human heart is a complex organ made up of four chambers: the right and left atria and the right and left ventricles. These internal chambers are separated by partitions known as the interatrial and interventricular septa. The exterior of the heart features a groove known as the coronary sulcus that demarcates the atria from the ventricles, while the anterior and posterior interventricular sulci distinguish between the two ventricles.
Deoxygenated blood from the body is received in the right...
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Related Experiment Video

Updated: Jul 21, 2025

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

Kamala P Tamirisa1, Peter Calvert2, Cicely Dye3

  • 1Texas Cardiac Arrhythmia Institute, 11970 N. Central Expressway, Suite 540, Dallas/Austin, TX, USA. tamirisakamala@gmail.com.

Current Cardiology Reports
|July 28, 2023
PubMed
Summary

Atrial fibrillation (AF) affects more women than men, particularly older women. Sex differences in AF presentation, risk, and treatment necessitate personalized medicine approaches for better outcomes.

Keywords:
AFAF differencesAtrial fibrillationDisparities in AFSex gaps in AF

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Area of Science:

  • Cardiology
  • Medical Research

Background:

  • Atrial fibrillation (AF) is a common cardiac arrhythmia with significant sex-based disparities.
  • Lifetime risk of AF is higher in men, but prevalence is greater in women due to longer life expectancy.

Purpose of the Study:

  • To review current literature on sex differences in atrial fibrillation.
  • To explore epidemiology, pathophysiology, risk factors, presentation, treatment, and outcomes.
  • To discuss implications for clinical practice and future research.

Main Methods:

  • Comprehensive literature review on sex differences in AF.
  • Analysis of epidemiological data, pathophysiology, and clinical outcomes.
  • Exploration of treatment disparities and management strategies.

Main Results:

  • Women with AF exhibit atypical symptoms, higher stroke risk, and reduced quality of life.
  • Women are less likely to receive guideline-directed therapies like anticoagulants and rhythm control.
  • Sex differences stem from biological, hormonal, and potential biases in research and clinical practice.

Conclusions:

  • Addressing sex differences in AF is crucial to minimize management disparities.
  • Further sex-specific research is needed to understand AF pathophysiology.
  • Personalized medicine tailored to individual characteristics, including sex, is essential for optimal AF management.