You are getting hand-off report from the RN in the Emergency Department.

He tells you that the patient's EKG shows ventricular bigeminy.

You know this means that:

Choice A rationale

While chest pain (angina) is a serious complication often associated with reduced cardiac output from the rapid rate, especially in those with underlying coronary artery disease (CAD), managing the underlying rate is the most direct way to improve myocardial oxygen supply and demand balance, which is the cause of the pain.

Choice B rationale

Educating the patient is crucial for long-term management and preventing recurrence but is not the immediate, priority action for a patient presenting with an unstable, rapid ventricular response that significantly impairs cardiac output and could lead to cardiogenic shock or heart failure.

Choice C rationale

In atrial fibrillation with rapid ventricular response (RVR), the heart rate often exceeds 100 bpm, reducing the time for diastolic filling and thus significantly decreasing stroke volume and cardiac output. Therefore, the priority is to administer rate-controlling medications (e.g., beta-blockers, calcium channel blockers) to slow the ventricular response and stabilize hemodynamics.

Choice D rationale

Anticoagulation is essential to prevent systemic embolization and stroke risk due to stasis and clot formation in the fibrillating atria. However, it addresses a long-term risk and is not the immediate, life-saving priority over controlling the dangerously rapid heart rate that acutely compromises perfusion. —.

Choice A rationale:

Survivors of sudden cardiac death due to ventricular fibrillation or pulseless ventricular tachycardia are prime candidates for ICDs. These devices detect and terminate life-threatening arrhythmias via defibrillation or antitachycardia pacing. ICDs reduce mortality by preventing recurrence of fatal arrhythmias. Guidelines recommend ICDs for secondary prevention in patients with structurally abnormal hearts and documented ventricular arrhythmias.

Choice B rationale

Spontaneous sustained ventricular tachycardia, especially if symptomatic or hemodynamically unstable, warrants ICD placement. Sustained VT is defined as lasting more than 30 seconds or requiring intervention. ICDs monitor rhythm and deliver therapy when VT is detected, preventing progression to ventricular fibrillation. This is a Class I indication for ICDs in patients with structural heart disease.

Choice C rationale

Unstable angina is caused by transient myocardial ischemia due to plaque rupture or vasospasm. It is managed with anti-ischemic therapy and revascularization. ICDs are not indicated unless the patient develops sustained ventricular arrhythmias or survives cardiac arrest. ICDs do not treat ischemia directly and are not used for primary prevention in unstable angina.

Choice D rationale

Heart failure patients with reduced ejection fraction (≤35%) and NYHA class II–III symptoms despite optimal medical therapy are candidates for ICDs for primary prevention. These patients are at increased risk for sudden cardiac death due to ventricular arrhythmias. ICDs improve survival by terminating malignant rhythms. This is supported by trials like MADIT-II and SCD-HeFT.