Sinus arrhythmia: The Daily PANCE Blueprint
A 26-year-old female volunteers to participate in a learning experience for PA students. The students practice putting EKG leads on her. They then obtain a 12-lead EKG on the volunteer patient. The 12-lead EKG reveals an irregular rate with an inconsistent P-P interval that tends to vary with respirations. The P waves look normal in morphology and the PR interval stays constant. Which of the following is the most likely diagnosis?
A. 2nd-degree AV block type 1
B. Atrial fibrillation
C. Sinus arrhythmia
D. Multifocal atria tachycardia
E. 1st-degree AV block
Smarty PANCE Content Blueprint Review:
Covered under ⇒ PANCE Blueprint Cardiology ⇒ Conduction Disorders ⇒ Sinus arrhythmia
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