What is the most common cardiac rhythm abnormality in patients with anorexia nervosa?

Sinus bradycardia is indeed the most common cardiac rhythm abnormality observed in patients with anorexia nervosa. This condition is primarily related to the physiological changes that occur as a result of significant weight loss and malnutrition. In individuals with anorexia nervosa, the body goes into a state of starvation, leading to decreased metabolic rates and alterations in electrolyte levels. These factors contribute to a decrease in heart rate, manifesting as bradycardia.

Bradycardia can pose risks, including decreased cardiac output and potential complications if severe or left untreated. Understanding this connection emphasizes the importance of monitoring cardiac health in patients with anorexia nervosa, as it can inform treatment plans and necessary interventions.

Other cardiac rhythm abnormalities such as atrial fibrillation, sinus tachycardia, and ventricular fibrillation are less commonly associated with anorexia nervosa. These rhythms are often linked to different clinical scenarios or health conditions, which highlights the unique consequences of anorexia nervosa on cardiac function.