Multiple choice general knowledge

Cigarette smoking releases powerful body chemicals that can cause cardiac rhythm abnormalities.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Smoking triggers the release of catecholamines (epinephrine/adrenaline and norepinephrine/noradrenaline) and other stress hormones. These chemicals increase heart rate, blood pressure, and myocardial oxygen demand. They can also affect the electrical conduction system of the heart, potentially causing arrhythmias (irregular heart rhythms) including atrial fibrillation, ventricular tachycardia, and other rhythm abnormalities. This effect is particularly dangerous in people with existing heart conditions. Therefore, True is correct.

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