The Department of Cardiology at AIIMS was established under the leadership of Prof. Sujoy B. Roy .The Department has developed excellent facilities for clinical care and has fully developed facilities for adult and pediatric interventions including coronary interventions, valvuplasty , device disease of congenital shunts and electrophysiology services including radiofrequency ablation, pacemaker,  biventricular pacemaker  and implantable defibrillator implantation. Laboratory facilities include treadmill testing holter recording ,echocardiography including transesophageal echocardiography and fetal echocardiography, TILT testing for syncope and up to date electrophysiology services including CARTO System mapping . It has done a lot of pioneering work in the field of rheumatic fever and juveniles mitral stenosis , angioplasty , arrhythmias and cardiomyopathies . It also has an excellent team of pediatric cardiology supported by a good durgical team