A patient's ECG shows a prolonged PR interval. Which type of cardiac arrhythmia is most likely responsible for this condition?
Q1. A patient's ECG shows a prolonged PR interval. Which type of cardiac arrhythmia is most likely responsible for this condition?
Answer: Atrial Flutter
Explanation: Atrial flutter is responsible for a prolonged PR interval because it originates from the atria and can cause an irregular heartbeat. Supraventricular tachycardia is associated with a narrow PR interval.