“…In addition, PPM may also preclude regression of left ventricular hypertrophy [13,14]. More recently, some reports about PPM following transcatheter aortic valve implantation and surgical implantation of sutureless (rapid-deployment) valves, that have a similar design to transcatheter devices have been published as well [4,7,[12][13][14][15][16]. In the early postoperative period, PPM may have a particular negative impact on outcome because it may affect patients with impaired left ventricular function prior to surgery because the preoperatively damaged left ventricle is particularly vulnerable when a residual gradient increases the hemodynamic burden.…”