There are many things that can cause and lead to cardiac arrhythmias. Here are 13 things or conditions that can cause cardiac arrhythmias, namely:
- Injury to the heart tissue
- Changes in cardiac structure, for example as a result of cardiomyopathy (heart muscle death)
- A clogged heart arteries (coronary artery disease)
- High blood pressure
- Diabetes
- Overactive thyroid gland (hyperthyroidism)
- Smoke
- Drinking too much alcohol or caffeine
- Drug abuse
- stress
- Drugs
- Dietary supplements and herbal remedies
- Electric shock
What is normal heart rate?
When the heart beats, an electrical impulse causes the heart to contract through a specific pathway. Any interruption in impulse can lead to arrhythmias.
The heart is divided into four rooms. Space on each half of the heart form a kind of two pumps side by side, which consists of an upper chamber (atrium) and lower chamber (ventricle).
When the heart beats, the atria contract and fill the ventricles with blood. Contraction is initiated when the sinus node, a small group of cells in the right atrium, sends electrical impulses that cause the right atrium and left to contract.
The impulse then travels to the heart center, to the atrioventricular which lies in the path between the atria and ventricles.
From here, impulses out of the atrioventricular and propagate through the ventricles, which makes the heart contracts to pump blood throughout the body. In a healthy heart, this process usually goes smoothly, producing a normal heart rate from 60 to 100 beats per minute. In general, when resting, the athlete has a heart rate of less than 60 beats per minute because their hearts are so efficient.
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