About Dr. Bhaba Nanda Das

Senior Consultant, Cardio Thoracic & Vascular Surgery
Indraprastha Apollo Hospitals, New Delhi

Specialty : Cardio Thoracic & Vascular Surgery
MBBS, MS (Gen. Surgery),Mch (CTVS)

Dr Bhaba Nanda Das is one of India’s most famous cardiac surgeons. He was the first person to perform a beating heart surgery in India.

Dr. BhabaNanda Das has worked as an active member of the surgical team at All India Institute of Medical Sciences and worked in the capacity of an independent surgeon since 1984. He performed all types of open heart operations, through he had deeper interest and expertise in Coronary Bypass Surgery using arterial conduits ( I.M.A., G.E.A.A, I.E.G.A., Radial). Aortic aneurysm surgery and cardiac transplantation surgery. During this periodhe performed about 12,000 major and minor cardiac operations.

One of the most successful cardiac surgeons that India is proud of, Dr Bhaba Nanda Das has climbed to the zenith of thoracic and cardiovascular surgery field through his professional expertise and dedication for the service to humanity. DrBhaba Nanda Das, a brilliant student all through, was conferred MS (General Surgery) by PGI, Chandigarh in 1976 and M.Ch. (Cardiothoracic & Vascular Surgery) by AIIMS in 1983.

As an independent surgeon in AIIMS since 1984, Dr Bhaba Nanda Das has performed about 12,000 major and minor cardiac operations in AIIMS, mainly Coronary Bypass Surgery using arterial conduits, Aortic Aneurysm Surgery and Cardiac Transplantation Surgery. Along with surgical accomplishments. Dr Das was involved in teaching undergraduate, postgraduate and nursing students, rendered service as research supervisor and as internal and external examiner.

His achievements include starting cardiac surgery unit/ centre, Department at Satya Sai Institute of Higher Medical Sciences, at Indraprastha Medical Institute and at Hayat Hospital, Guwahati Assam and starting the Beating Heart Surgery unit at Sikder Medical College, Bangladesh. He has a wide range of experience in some of the most renowned Cardiac Centers in USA including Lancaster General Hospital, Boston Children Hospital, Mayo Clinic, Texas Heart Institute, etc.

While at AIIMS, Dr Bhaba Nanda Das earned laurels for being the first cardiac surgeon to perform CABG surgery on beating heart and was the first time user of Bilateral Internal Mammary Artery, Sequential Internal Mammary, Artery graft, Free Internal Mammary artery graft, gastro-epiploic artery graft in Myocardial revascularization and inferior epigastric and radial artery for myocardial revascularization. He is the first Surgeon of India using Coronary Sinus in the Fontan’s circulation, use of endo-aneurysmorraphy for the treatment of left ventricular g aneurysm. Dr Bhaba Nanda Das has procured all three donor hearts for the first three successful cardiac transplantation in India and acted as the most important member of the cardiac transplant team.

Dr Das was awarded WHO fellowship in the year 1993 when he involved actively in cardiac transplant discourse at Stanford 11 University Medical Centre for 12 weeks. He was also recipient of Commonwealth Fellowship in 1994.

Besides forty six publications on a wide range of subjects ranging from Bypass Surgery to graft to different innovative procedures in different national and international medical journals of repute. Dr Das during his more than three decade service carrier attended and presented papers in different high level Congress, Conference, Meetings held in India and abroad. His interest and success in open heart operation, Coronary Bypass Surgery using arterial conduits Aortic aneurysm surgery and cardiac transplantation surgery is well acclaimed.

Dr. Bhabha Nanda Das at Apollo Hospitals Delhi on Heart Health

Areas of Specialization

Awards and Achievements

  • First fully qualified cardiac surgeon from Assam (North- Eastern Region).
  • Started Open Heart Surgery Centre at G.N.R.C Hospital, Guwahati, Assam, the first such centre in North–East of India.
  • Started the cardiac surgery department at Satya Sai Institute of Higher Medical Science (Putaparthi) .
  • Started the cardiac surgery unit at Indraprastha Medical Institute.
  • Started the cardiac centre at Hayat Hospital, Guwahati, Assam.
  • Started Beating Heart Surgery in this country.
  • Performed 1st Heart Transplant in this country.
  • Started the beating heart surgery unit in Bangladesh at Sikdar Medical College.

Experience Abroad

  • Visited following centres two weeks each in United States of America :
  • Lancester General Hospital ( Dr. L.I. Boncheck)
  • Cleveland Clinic
  • University Hospital Utah
  • Boston Children Hospital
  • Mayo Clinic
  • Children Hospital Philadelphia
  • Texas Heart Institute

Professional Achievement

  • For the first time at the A.I.I.M.S
  • Used Bilateral Internal Mammary Artery
  • Used Sequential Internal Mammary Artery graft.
  • Used free Internal Mammary Artery graft
  • Used Gastro-epiploic artery graft in Myocardial revascularization
  • Used inferior epigastric & radial artery for myocardial revascularisation
  • Performed CABG operation on beating heart.

For the first time in country

  • Used the procedure of Endo-Aneurysmorraphy for the treatment of left ventricular aneurysm.
  • Used Coronary Sinus in the Fontan’s circulation.
  • Used all arterial grafts for multiple Coronary revascularization.
  • Key member of the first Heart Transplant team.
  • Procured all three donor hearts for first three successful cardiac transplantation and acted as the most important member of the cardiac transplant team.
  • Awarded WHO fellowship in year 1993, and spent 12 weeks with the cardiac transplant team at Stanford University Medical Centre.
  • Awarded commonwealth fellowship in year 1994

Research and Publications

  • Pawan Kumar : B.Das : U. Kaul : P. Venugopal : Thrombosis of mitral valve prosthesis during pregnancy. Successful Surgical Treatment.
  • NazarYA : Venugopal P: Kaul U. : Das B : Iyer KS : Balram A : Sampath Kumar A: Rao IM: Manchanda SC: Wasir HS: Reddy KS: Bhatia ML: Raghavan V : Rajani M: Gopinath N: Experience with Aortocoronary bypass surgery. Indian Heart Journal 37: 165-169, 1985
  • Venugopal P: Kaul U: Iyer KS: Rao IM: Balram A: Das B: Sampath Kumar A: Mukherjee S: Rajani M: Wasir HS: Bhatia ML: Raghavan V: Gopinath N: Fate of Thrombectomized Bjork Shiley Valves – A Long Term cinefluroscopic echocardiographic and hemodynamic study. J. Thorac. Cardiovasc. Surg. Vol. 91, No.2, 168-173, Feb. 1986
  • Venugopal P: Rao IM: Sampath Kumar A: Balram A : Das B: Iyer KS: Kaul U: Wasir HS: Rajani M: Bhatia ML: Gopinath N: Early and late results of valve replacement using the Bjork Shiley valve. Published in the proceeding of the world conference on Open Heart Surgery held in Bombay in Feb. ‘1985.
  • Venugopal P: Rao IM: Sampath Kumar A: Balram A: Das B: Nazar YA: Iyer KS: Kaul U : Reddy KS: Wasir HS: Mukherjee S: Bhatia ML: Gopinath N: Experience with Aorto Coronary bypass surgery at the AIIMS published in the proceedings of the World Conference of Open Heart Surgery held at Bombay in Feb. ‘1985.
  • Pawan Kumar : B.Das : U. Kaul : P. Venugopal : Thrombosis of mitral valve prosthesis during pregnancy. Successful Surgical Treatment.
  • R.K. Panda, G. Gopinath, AK Malhotra, KS Iyer, B.Das, A. Sampath Kumar: ML Sharma, P. Venugopal: Assessment of Rest and Exercise ventricular function following coronary artery bypass surgery by Radionucleide Ventriculography. Indian Heart Journal Vol. 38, No.1, 1986, Page 10-14.
  • A. Bhan: H.S. Wasir, B.Das : P. Venugopal: Profile of coronary artery disease in patients with diabetes Mellitus undergoing CABG : Indian Heart Journal, vol 38, No. 4, Page 257.
  • B.Das : KS Iyer, M. Sharma : U Kaul: P Venugopal : Coronary artery bypass surgery in patients with poor LV function. Indian Heart Journal (abst) Vol. 38 No. 4 Page 257.
  • A Gupta : U Kaul : KS Iyer, B. Das : AS Kumar: P Venugopal: Perioperative arrhythmias following Coronary artery bypass surgery (abst) Indian Heart Journal, Vol. 38 No. 4, Page 257.
  • A Bhan: KS Iyer :B.Das : IM Rao: P. Venugopal: Surgical experience with Ventricular septal defect & aortic insufficiency (abst) : Indian Heart Journal : Vol. 38 No. 4 Page 299
  • A Ganjoo: U Kaul : B. Das: A Sampath Kumar : P Venugopal : Cardio version for AF following Mitral Valve Surgery (abst) Indian Heart Journal Vol. 38 No. 4 Page 318.
  • P. Venugopal: B.Das: KS Iyer: U Kaul : Experience with Coronary Artery Bypass Grafting in India. The Thai Journal of Surgery : Vol. 8, No. 1 Page 89-91 (1987).
  • KS Iyer: P. Venugopal: B.Das: IM Rao : The Bjork Shiley Valve Long Term Experience in India, The Thai Journal of Surgery : Vol. 8, No. 2 (1987) Page 193-196.
  • P Kulshrestra :B.Das : KS Iyer : A Sampathkumar : Surgical Experience with diseases of Tricuspid Valve, Cross sectional and Dopler Echocardiographic evaluation after Devega’s repair, International Journal of Cardiology Vol. 23 (1989) Page 19-26.
  • P. Kulshrestra, KS Iyer :B.Das : Balram Airan : A Sampath Kumar : Chest Injuries : a clinical and Autopsy profile. Journal of Trauma. Vol. 23 (1989) page 844-847.
  • RK Pande : AN Malviya : A sampathkumar : B. Das, P. Venugopal : serial estimation of C-reactive protein following cardiac surgery. Vol. 5 (1988) page 18-23.
  • SC Kale :Rp Mahajan : TS Jayalaxmi: V Raghavan: B.Das : Nilfedipine prevents the pressure response to laryngoscopy and tracheal intubation in patients with coronary artery disease: Anaesthesia Vol 43 (1988) 495-497.
  • VM Reddy : B. Das : AK Malhotra : A Sampath Kumar : U Kaul : P. Venugopal : left ventricular function after CABG – Evaluation by radionuclide ventriculography (MUGA) (abst) Indian Heart Journal : Vol. 41 No. 6 Page 361.
  • VM Reddy, B.Das : TD Dogra: P Venugopal : Diameter of Internal mammary artery and Gastroepiploic artery – an autopsy study: Indian Heart Journal : Vol 41 No. 6 Page 405.
  • DB Reddy, B. Das, T Dogra : P. Venugopal : Dimensions of Coronary arteries in Indian subjects : Indian Heart Journal : Vol. 41 No. 6 Page 367.
  • P. Kulshrestra : B. Das : P. Venugopal : Srivastava : R. Tandon : Surgical experience with total anomaious pulmonary venous drainage : Indian Heart Journal (abst) Vol. 41, No. 6 page 405.
  • S.L. Rao: B. Das : A Dhir : P Venugopal : NC Joshi : Experience with membrane Oxygenator (abst) : Indian Heart Journal, Vol 41 No. 6, Page 420.
  • B. Das : P. Venugopal : IM Rao : ML Sharma : N. Gopinath: Disease profile in surgical patients and experience with coronary bypass surgery (abst) Indian Heart Journal, Vol. 41 No. 6 page 454.
  • S.L. Rao; B. Das : VM Reddy : A Bhan : P. Venugopal : Reduction of blood utilization during myocardial revascularisation procedure : (abst) Indian Heart Journal. Vol. 41 No. 6 Page 455.
  • B. Das : P. Venugopal : A Bhan: A Sampathkumar : R. Tandon : Early and late result following repair of partial anamoious pulmonary venous connection. (abst) Indian Heart Journal, Vol. 41 No. 6 page 459.
  • B. Das : P. Venugopal: B Bhan : ML Sharma : R. Tandon : Early and late results following repair of ventricular septal defects. (Abst) Indian Heart Journal. Vol. 41 No. 6 Page 463.
  • P. Venugopal : B. Das : U. Kaul : Our experience with surgical Management of patients with diffuse coronary artery disease : Indian Heart Journal, Vol. 41 No. 3 May – June 1989.
  • P. Kumar : P Venugopal : U. Kaul : B. Das : N. Gopinath : closed mitral valvotomy during pregnancy. Scand J. Thoracic Cardiovasc. Surg. 22 : 1988, 11-15.
  • P. Kumar : P Venugopal : U Kaul : B. Das : N. Gopinath : pregnancy in patients with prosthetic cardiac valve – 10 year experience : Scand J of Thoracic Cardiovascular Surg. 22 : 1988, 19-22.
  • B. Das : Venugopal P, Kaul, Wasir R. Influence of recent myocardial infarction unstable angina on the outcome of coronary bypass surgery. Indian Hearth Journal. 42: 4, 270 (abst).
  • B. Das : Venugopal P, Kaul U, Wasir R. Influence of recent myocardial Infarction unstable angina on the outcome of coronary bypass surgery. Indian Hearth Journal. 42:4, 270 (abst).
  • Bhan A, Das B, Venugopal P, Sampath A, Chopra P. : Immuno-histochemical chaterization of aschoff nodules and endomyocardial inflammatory infiltrates in resected left atrial Appendages, Indian Heart Journal, 42:415-417.
  • Reddy DB, Das B, Dogra T, Venugopal P: Dimensions of potential arterial grafts (for CABG) in Indians – an autopsy enaluation study. Indian Heart Journal 42:1990, 415-417.
  • A Bhan, B. Das :Wasir HS, Kaul U, Venugopal P. Profile of coronary arterial disease in diabhetic patients undergoing coronary arterial bypass grafting. International journal of cardiology. 31:1991, 155-160.
  • Bhan A, Sharma R, Das B. : CABG in elderly patients Ind J. TharacicCardiovas. Surg. 1992 :8: 124 (abst)
  • Bhan A, Sharma R, Das B et al, CABG associated with valvular procedures : Ind. J. Thoracic Cardiovasc, surgery : 1992: 8: 124 (abst).
  • Alran B, Maslekar A, Bhan A, Das B et al : Arterial Conduits for Coronary artery bypass surgery. India J. Thoracic Cardiovascular surgery : 1992:8:124 (Abst)
  • B. Airan, CSK Reddy, A. Bhan, B. Das, P. Venugopal : Cardiac surgery in elderly patients : (chapter in book). A KING AND HEART CARE Published Vikas publisher in 1993.
  • U. Kiran, N. Saxena, B. Das, P. Genugopal : Allergy to narcoties in a patient for coronary : (39) 187, 1991.
  • B. Das, A. Bhan, B. Airan, R. Sharma, P. Venugopal : Use of Multiple arterial grafts in CABG. Indian Heart Journal Vol. 46 No. 5 : 192 (Abst)
  • B. Das, B. Airan, A Bhan, P. Venugopal : Experience with thoracic Aortic Aneurysm. Indian Heart Journal Vol. 46, No. 5 : 235 (Abst)
  • B. Das, A. Sampath Kumar, P Venugopal : Management of Ischaemic Mitral Regurgitation associated with CAD. Indian Heart Journal, Vol 46, No. 5, 248 (Abst)
  • R. Sharma, KS Iyer, B. Airan, K. Saha, B. Das, A Bhan IM Rao, P. Venugopal : Repair of univentricular heart : Early and midterm result. Accepted for publication in Journal of Thoracic and Cardiovascular surgery.
  • Nazar YA, Iyer KS, Kaul U, B. Das, Sampath Kumar A, Sharma ML, Rao IM, Venugopal P : Experience with Intracardiac Myxomas. Indian Journal Cardiologists 18:317-325, 1988.

Patient Reviews


Coronary Artery Bypass Grafting (CABG) is a surgery that enhances blood flow to the heart through the coronary arteries. It is indicated for people who suffer from severe Coronary Heart Disease (CHD) also called Coronary Artery Disease.

CHD is a disorder in which a component called plaque builds up inside the coronary arteries. These arteries supply oxygen-rich blood to your heart. Plaque is made up of fat, cholesterol, calcium, and other substances found in the blood. Plaque can narrow or block the coronary arteries and reduce blood flow to the heart muscle. If the blockage is severe, angina, shortness of breath, and, in some cases, heart attack can occur. The term Angina refers to chest pain or discomfort due to lack of optimal flow of blood to the heart muscle.

CABG is one treatment for CHD. During CABG, a healthy artery or vein from your body is connected or grafted to the blocked coronary artery. The grafted artery or vein bypasses (that is, goes around) the blocked portion of the coronary artery. This creates a new passageway and oxygen-rich blood is channeled around the blockage to the heart muscle.

Your doctor will talk to you whether coronary bypass surgery or an alternative artery-opening procedure such as Angioplasty or stenting, is right for you.

Coronary bypass surgery is an option if:

  • You have severe chest pain caused by narrowing of several of the arteries that supply your heart muscle, leaving the muscle short of blood during even light exercise or at rest. Sometimes Angioplasty and stenting will help, but for some types of blockages, coronary bypass surgery may be the best option.
  • You have more than one diseased coronary artery and the heart's main pumping chamber, which is the left ventricle, isn't functioning well.
  • Your left main coronary artery is severely narrowed or blocked. This artery supplies most of the blood to the left ventricle.
  • You have an existing blockage for which angioplasty is not suitable, you have had a previous angioplasty or stent placement that hasn't been successful, or you've had stent placement, but the artery has narrowed again (restenosis).
  • Coronary bypass surgery may also be performed in emergency situations, such as a heart attack, if your doctor sees that you're not responding to other treatments.
  • Even if you undergo a coronary bypass surgery, changes in lifestyle are still a necessary part of management after surgery. Medications are routine after the surgery to lower your blood cholesterol, ease the risk of developing a blood clot and help your heart function as well as possible.

To prepare for the surgery, the doctor will give you specific instructions about any restrictions and changes in your diet or medications you should follow before surgery.

You would need several pre-surgical tests, like chest X-rays, blood tests, an electrocardiogram and a coronary angiogram. A coronary angiogram is a type of X-ray procedure that uses dye to visualize the coronary arteries.

You will be advised to get admitted one or two days prior to the surgery and anti-platelets are withheld three to seven days prior to the surgery depending upon the Anti-platelets used.

Be sure to plan for the weeks following your surgery. It will take about four to six weeks for you to recover to the point where you can resume driving, return to work and perform daily chores.

During the procedure

Coronary bypass surgery requires general anesthesia. The number of bypasses required is subject to the location and severity of blockages in your heart.

  • The surgeon cuts down the center of the chest, along the breastbone. The surgeon then spreads open the rib cage to expose the heart. After the chest is opened, in the earlier versions of this surgery, the heart was temporarily stopped and a heart-lung machine took over, to circulate blood to the body. Today, most CABG procedures are Off-pump or beating-heart surgeries. This procedure allows surgery to be done on the still-beating heart using special equipment to stabilize the area of the heart the surgeon is working on.
  • The specialist takes a section of healthy blood vessel, often from inside the chest wall (the internal mammary artery) or from the lower leg, and attaches the ends above and below the blocked artery so that blood flow is diverted (bypassed) around the narrowed portion of the diseased artery. There are other surgical procedures your surgeon may use such as Minimally Invasive Coronary Bypass surgery. In this procedure, a surgeon performs coronary bypass through a smaller incision in the chest, often with the use of robotics and video imaging that help the surgeon operate in a small area. Variations of minimally invasive surgery may be called port-access or keyhole surgery.

After the procedure

Coronary bypass surgery is a major operation. Expect to spend a couple of days in the intensive care unit after coronary bypass surgery. Here, your heart, blood pressure, breathing and other vital signs will be continuously monitored.

Immediately after your surgery

General anesthesia is used during the CABG procedure, so you may be unconscious for several hours after surgery. While you are still unconscious, you will probably be taken to the intensive care unit, a special ward reserved for people who have just had significant surgeries. You might be in this unit for one to three days. A longer stay does not mean that your CABG surgery was not successful. It may mean, for example, that it is taking more time for your anesthesia to wear off or for fluid in your chest to drain.

As you wake up, you may notice several sensations. You will probably feel very groggy. Anesthesia can make you feel nauseated, so your stomach may feel queasy. You may also notice immediately that you cannot swallow or speak because of the tube placed in your throat to help you breathe.

Although the effects of anesthesia usually help with the discomfort from CABG surgery, you still may experience some pain after you are awake. To relieve this discomfort, your nurse will give you pain medicine through your intravenous (IV) line directly after surgery.

Getting out of the intensive care unit

When your condition has improved, you will be transferred from the specialized ward to a regular cardiac care unit, sometimes called a step-down unit. You are usually transferred there when:

  • Your breathing tube has been removed.
  • You can take medicines orally.
  • Invasive tubes and monitoring requirements are reduced. You may no longer need the urinary catheter that was placed in your bladder.
  • When you are in the step-down unit, you may be able to move in and out of bed.
  • Barring any complications, you are likely be discharged from the hospital within eight days (two to three days in the ICU and two to three days in the ward), although even after you have left the hospital, you may find it difficult to perform everyday tasks, or even walk a short distance.
  • Expect a recovery period of about six to twelve weeks. In most cases, you can return to work, begin exercising and resume sexual activity after four to six weeks, but make sure you have your doctor's approval before doing so.


Post-surgery, majority of the patients feel better and may remain symptom-free for as long as 10 to 15 years.

While bypass surgery improves blood supply to the heart, it does not cure the underlying Coronary Artery Disease. Your results and long-term outcome will depend in part on taking your medications to prevent blood clots, lower blood pressure, lower cholesterol and help control diabetes as directed, and following healthy lifestyle recommendations, such as:

  • Quit smoking
  • Following a healthy-eating plan, such as the DASH diet
  • Maintaining a healthy weight
  • Exercising regularly
  • Managing stress

About Apollo Hospitals, Delhi

Indraprastha Apollo Hospitals, India's first JCI accredited hospital, is a joint venture between the Government of Delhi and Apollo Hospitals Enterprise Limited. Commissioned in July 1996, it is the third super-specialty tertiary care hospital set up by the Apollo Hospitals Group. Spread over 15 acres, it houses 57 specialties with more than 300 specialists and more than 700 operational beds, 19 operation theatres, 138 ICU beds, round-the-clock pharmacy, NABL accredited laboratories, 24-hour emergency services and an active air ambulance service. Apollo Hospitals Delhi has the leading programme in kidney and liver transplant in the country. The first successful paediatrics and adult liver transplants in India were performed at Indraprastha Apollo Hospitals. The hospital is at the forefront of medical technology and expertise. It provides a complete range of latest diagnostic, medical and surgical facilities for the care of its patients. The Hospital has introduced the most sophisticated imaging technology to India with the introduction of 64 slice CT and 3 Tesla MRI, Novalis Tx and the integrated PET Suite and Radixact X-9 Tomotherapy. Indraprastha Apollo has also pioneered the concept of preventive health check programmes and has created a satisfied customer base over decades. The Hospital has been consistently ranked amongst the best 10 hospitals in India by The Week survey for the past few years.

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