The key indication for<unk>  is left bundle branch block (LBBB) of the heart, a<unk>  abnormality leading to delayed left ventricular contraction. LBBB causes a QRS prolongation of >120 ms on the electrocardiogram, contributing to poor left ventricular coordination and reduced systolic function, thereby reduced ejection fraction (<35%). This reduction in ejection fraction is what we consider heart failure. Heart failure patients are generally considered if in class II or III heart failure, with current guidelines indicating<unk>  is inappropriate for class IV heart failure.
Cardiac resynchronization therapy
Percutaneous pulmonary valve implantation
Totally endoscopic coronary artery bypass surgery
Mitral valve repair
Cellular cardiomyoplasty
Cardiomyoplasty
Tissue engineering of heart valves
Minimally invasive direct coronary artery bypass surgery