Here are 13 things or conditions that can cause cardiac arrhythmias, namely:
1. Injury to the heart tissue
2. Changes in cardiac structure, such as a result of cardiomyopathy (heart muscle death)
3. Clogged heart arteries (coronary artery disease)
4. High blood pressure
5. diabetes
6. Overactive thyroid gland (hyperthyroidism)
7. smoke
8. Drinking too much alcohol or caffeine
9. drug abuse
10. stress
11. Drugs
12. Dietary supplements and herbal remedies
13. electric shock
What is the normal heart rate?
When the heart beats, an electrical impulse causes the heart to contract through certain channels. Any interruption in impulse can lead to arrhythmias.
The heart is divided into four chambers. Space on each half of the heart to form a sort of two pumps side by side, which consists of upper chamber (atrium) and lower chamber (ventricle).
When the heart beats, the atria contract and fill the ventricles with blood. This contraction begins when the sinus node, a small group of cells in the right atrium, sends electrical impulses that cause the right and left atria to contract.
Impulse then goes to the heart center, which is located to the atrioventricular pathway between the atria and ventricles.
From here, the impulse out of 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, resulting in a normal heart rate of 60 to 100 beats per minute.
In general, at rest, the athlete has a heart rate less than 60 beats per minute because their hearts are so efficient.
