Hemodynamic Changes In Mechanical Valves: Are Bi-leaflet Better Than Tilting Disc One Leaflet Valve?

Dr A.P.Jain; Dr Anurag Rai; Dr. S.S. Rajput

Volume : VIII, Issue : VI, June - 2019

Hemodynamic Changes In Mechanical Valves: Are Bi-leaflet Better Than Tilting Disc One Leaflet Valve?

Dr A. P. Jain, Dr Anurag Rai, Dr. S. S. Rajput

Abstract :

All available prosthetic valves are associated with valve-related complications that influence their clinical use. So this prospective study was conducted to compare hemodynamic parameters measured by the Doppler echocardiography of bi-leaflet (St. Jude, ATS, ON-X) heart valve prosthesis with tilting disc (TTK Chitra) mechanical valve in the mitral area. Study was also aimed to assess mitral valve area (MVA) by using the Continuity Equation (CE) and Pressure Half Time (PHT) method and trans-valvular gradient with tilting disc (TTK Chitra) mechanical valve. This analytical, post- operative prospective observational study was conducted in a medical college on 142 patients operated only for mitral valve replacement. At the time of discharge and in follow-up visits detailed 2 –D Echo with Color Doppler examination was done focusing on trans-valvular mean gradient, mitral valve area by Pressure Half Time (PHT) and Continuity Index. Both Group of prosthesis provided a satisfactory hemodynamic and clinical outcome in early postoperative period for valve sizes greater or equal to 25 mm. From our study result we conclude that bi-leaflet valves-(St. Jude, ATS and ON-X) were easier to insert and gave more favourable post-operative hemodynamic performance with lesser gradients and larger effective orifice area.