Structural valve failure of TTK Chitra heart valve prosthesis.

Mechanical prosthetic valve dysfunction can be structural or non-structural. Structural valve dysfunction includes disc dislodgement, disc fracture, and strut fracture. These events in an implanted valve are rare but could pose a risk to life. TTK Chitra heart valve prosthesis (CHVP), an Indian-made single tilting disc valve, has been implanted since 1990 as reported by Vayalappil and Bhuvaneswar (2005). There is limited literature on the structural valve dysfunction of CHVP. We hereby submit images of the dysfunctional valve from our patient, a case of acute severe mitral paravalvular regurgitation 16 years after implantation of CHVP.

Half-turned truncal switch operation for dextro-transposition of the great arteries with ventricular septal defect and left ventricular outflow tract obstruction and an abnormal coronary pattern.

We describe a surgical technique for a half-turned truncal switch operation in a 5-year-old child with dextro-transposition of the great arteries (D-TGA), a ventricular septal defect, a left ventricular outflow tract obstruction and a complex coronary pattern. The benefit of the half-turned truncal switch is the creation of haemodynamically superior biventricular outflow tracts and the maximal use of an autologous pulmonary valve in the right ventricular outflow tract, thereby avoiding the right ventricular-pulmonary artery conduit.