Cardiac Resynchronization Therapy Defibrillator

A Cardiac Resynchronization Therapy Defibrillator (CRT-D) is an advanced cardiac device used to treat heart failure and life-threatening abnormal heart rhythms. It combines the functions of a biventricular pacemaker and an implantable cardioverter defibrillator (ICD).

CRT-D helps the heart’s chambers beat in a coordinated manner while also delivering a life-saving shock if a dangerous rhythm is detected.
 

Who Needs a CRT-D?

CRT-D may be recommended for patients with:

• Moderate to severe heart failure

• Reduced left ventricular ejection fraction (LVEF)

• Electrical conduction delay (such as left bundle branch block)

• Symptoms like fatigue, shortness of breath, or swelling

• High risk of sudden cardiac arrest due to ventricular arrhythmias

  How Does CRT-D Work?

• Resynchronization Therapy: Coordinates the contractions of the right and left ventricles, improving the heart’s pumping efficiency

• Defibrillation: Detects dangerous heart rhythms and delivers an electrical shock to restore a normal rhythm

• Pacing Support: Prevents slow heart rates and rhythm irregularities