Which therapy provides both resynchronization and defibrillation capabilities?

Which therapy provides both resynchronization and defibrillation capabilities?

• A. Cardiac resynchronization therapy
• B. Implantable cardioverter-defibrillator
• C. Left ventricular assist device
• D. Combined resynchronization therapy and defibrillator

Answer: (D)

Resynchronization therapy improves the timing of ventricular contractions, while defibrillation capability protects against life-threatening arrhythmias. The only option that provides both functions is the combined resynchronization therapy and defibrillator device, which integrates biventricular pacing to synchronize contraction with an implanted ICD that detects VT/VF and delivers shocks or pacing to terminate the arrhythmias. CRT alone doesn’t shock, an ICD alone doesn’t resynchronize, and a left ventricular assist device is a mechanical pump, not an electrical therapy. So the combined device is the correct choice.

Resynchronization therapy improves the timing of ventricular contractions, while defibrillation capability protects against life-threatening arrhythmias. The only option that provides both functions is the combined resynchronization therapy and defibrillator device, which integrates biventricular pacing to synchronize contraction with an implanted ICD that detects VT/VF and delivers shocks or pacing to terminate the arrhythmias. CRT alone doesn’t shock, an ICD alone doesn’t resynchronize, and a left ventricular assist device is a mechanical pump, not an electrical therapy. So the combined device is the correct choice.