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What causes abnormal heart rhythms?
Electrophysiological abnormalities Structural heart diseases Cardiac surgeries and procedures
Questioner：Lucas Ross 2018-04-06 09:55:08
The most authoritative answer in 2024
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Julian Turner——Works at the World Health Organization, Lives in Geneva, Switzerland.
As a medical professional with expertise in cardiology, I can explain that abnormal heart rhythms, also known as arrhythmias, can be caused by a variety of factors. Here's a detailed explanation: 1. Electrophysiological abnormalities: These are irregularities in the heart's electrical conduction system that can lead to arrhythmias. For instance, a condition called atrial fibrillation (AFib) is caused by multiple unstable electrical impulses misfiring, causing the atria to quiver out of control. 2. Structural heart diseases: Conditions like coronary artery disease, heart failure, or valvular heart disease can alter the heart's structure and function, leading to arrhythmias. 3. Cardiac surgeries and procedures: Invasive procedures can sometimes damage the heart's electrical pathways, resulting in arrhythmias. 4. Electrolyte imbalances: Imbalances in electrolytes like potassium, calcium, and magnesium can disrupt the heart's electrical activity. 5. Certain medications: Some drugs, including certain asthma medications, antidepressants, and over-the-counter decongestants, can cause arrhythmias as a side effect. 6. Stress and anxiety: These can trigger the release of stress hormones that can temporarily increase the heart rate and cause palpitations. 7. **Excessive alcohol or caffeine consumption**: Both can stimulate the heart and lead to arrhythmias. 8. Sleep apnea: This sleep disorder can disrupt normal breathing during sleep, leading to pauses in breathing and changes in heart rhythm. 9. Genetic predisposition: Some people are born with a genetic tendency to develop arrhythmias. 10. Other medical conditions: Thyroid disorders, diabetes, and anemia can also contribute to the development of arrhythmias. read more >> -
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Julian Patel——Works at the International Criminal Court, Lives in The Hague, Netherlands.
This disorganized heart rhythm occurs in the upper chambers of the heart. It's the most common arrhythmia. Atrial fibrillation, or AFib, occurs when many unstable electrical impulses misfire and may result in the atria quivering out of control. AFib causes the heart rate to increase and become erratic.read more >>
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