A nurse leaves a coffee shop and sees a man lying on the ground. He is unresponsive and has no pulse and the nurse begins chest compressions. EMS arrives and connects the cardiac monitor displaying this rhythm. Identify the rhythm.

A. Ventricular Tachycardia: Ventricular tachycardia typically appears as wide, regular, and rapid QRS complexes on the monitor. While it can be pulseless and life-threatening, it has a more organized pattern than the chaotic, irregular baseline seen in ventricular fibrillation. B. Sinus Tachycardia: Sinus tachycardia shows a regular rhythm with normal P waves preceding each QRS complex and a rate typically between 100–150 bpm. This rhythm is organized and perfusing, unlike the uncoordinated activity seen in ventricular fibrillation. C. Sinus Rhythm: Normal sinus rhythm is regular, with P waves, PR intervals, and QRS complexes within normal limits. A pulseless, unresponsive client would not exhibit a perfusing sinus rhythm. D. Ventricular Fibrillation: Ventricular fibrillation is a chaotic, disorganized rhythm with no identifiable P waves, QRS complexes, or T waves, resulting in no effective cardiac output. Like pulseless ventricular tachycardia, it is a shockable rhythm, making immediate defibrillation the priority intervention to restore a perfusing rhythm.