IJTCVS Joshi et al 15 2005; 21: 15–17 Chitra Heart Valve in 148 patients. Mean age of patients were 30.9±9.3 years. Etiology was rheumatic in the majority of 148 patients 78 (52.7%) underwent mitral valve replacement (MVR), 40 (27%) underwent aortic valve replacement (AVR) and 30 (20.3%) underwent double valve replacement (DVR). Preoperatively 100 (68%) patients were in NYHA Class III. The pre-operative comorbid risk factors and etiology of valvular disease are shown in Table 1. Abstract Background: Rheumatic heart disease is the major indication for valve surgery in India. Majority of these patients belong to the low socio-economic groups, long term clinical results with TTK-Sree Chitra valve being presented herewith as an affordable option. Method: Data was evaluated retrospectively to determine long term clinical outcome of 178 TTK-Sree Chitra valve implanted at out institution from January, 1993 through December, 2003. Mitral (n=78), Aortic (n=40) and Double valve replacement (n=30) were performed. Follow up was sought five times in this period. Total follow up was 448±2.8 patient years. Follow up was 94% complete. Results: Early mortality was 2.02% ( 3 patients). Eight (5.4%) late deaths, of 13 total deaths, were due to valve related events (5.41%). Structural deterioration, non structural dysfunction, stuck valve and prosthetic valve endocarditis were not observed. Actuarial freedom from reoperation at 10 years was 100% for valves at both positions. Actuarial survival rate at 10 years was 89.87±7.2%. Conclusions: Overall TTK-Sree Chitra valve is an excellent substitue, and cost effective. (Ind J Thorac Cardiovasc Surg, 2005; 21: 15–17) Key words : Mitral valve replacement, Aortic valve replacement, Rheumatic heart disease Introduction The TTK Chitra heart valve 1 is a tilting disc valve. It has been tested, and clinically evaluated in India 2,3,4 . Its housing is made of chrome cobalt alloy and disc is made up of ultra high molecular weight polyethene (UHMW- PE), sewing ring from polyester fabric material, we present long term clinical results with this valve. Patients and Methods From January 1993 through December 2003, 148 underwent implantation of a Chitra heart valve prosthesis. Last followup examination was completed in December 2003. Total 178 TTK- Sree Chitra Valve have been implanted Critical evaluation of clinical results with TTK-Sree Chitra valve Lalit Mohan Joshi, M.Ch., Sushil Kumar Singh, M.Ch., Salman Siddiqi, M.Ch., Sanjay Pandey, MS, Girdhar Gopal Agrawal, PhD, Shekhar Tandon, M.Ch. Department of Thoracic & Cardiovascular Surgery, King George's Medical University, and Department of Statistics, Lucknow University, Lucknow Address for correspondence: Prof. Shekhar Tandon Head, Department of Thoracic & Cardiovascular Surgery King George's Medical University, Lucknow - 226 003 Phone: 91-522 2616930 (Residence) E-mail: lalit_reena2000@yahoo.com @IJTCVS 097091342110305/079 Received - 15/04/04; Review Completed - 20/05/04; Accepted - 14/10/04. Table 1. Demographic profile Number % Risk Factor Diabetes 5 3.38% Chronic lung disease 3 2.03% Cerebrovascular accident 4 2.70% Coronary artery disease 1 0.67% Etiology Rheumatic 120 81.08% Calcific valve 12 8.11% Congenital 7 4.73% Endocarditis 6 4.06% Marfans syndrome 3 2.03% Valve Lesion Stenosis 26 17.56% Insufficiency 17 11.49% Mixed 105 70.95% Age : 30.98±9.3 years Sex : 85 male (57.4%) , 63 female (42.6%) 79-04-Original article.p65 2/7/2005, 2:47 PM 15