Biventricular pacemaker ⚡️ This device typically consists of three leads. A right atrial, right ventricular, and coronary sinus lead across the left ventricle. CRT therapy is beneficial for those with advanced heart failure. When the QRS gets prolonged we start to see dyssynchrony between the left and right ventricles. This device allows for simultaneous pacing of the chambers to allow for a more efficient cardiac cycle. Most times the right ventricular lead will be a shocking lead as we know th