Interventional outcomes and technical success:
All patients underwent a successful transcatheter edge-to-edge mitral valve repair using the MitraClip NTR/XTR Delivery System with a reduction in MR of at least one grade or to an MR grade < moderate-to-severe as previously described (15), (16), (17). To maintain optimal procedural conditions and outcomes, all procedures were performed under general anaesthesia with controlled haemodynamic conditions such as systolic blood pressure in the range of 110-130 mmHg and the heart rate between 60-80 bpm.
54% (n=95) of patients received one clip device, 43 % (n=75) of patients were treated using two clip devices. Three clip devices were implanted in 3% (n=5) of patients, without a significant difference in the arithmetic mean of the number of clip devices used between the groups; however, the one-clip approach was performed significantly more often in group 1 (1.43±0.58 vs 1.41±0.7, p=0.9). There was no significant difference in post-procedural residual MR between the groups (MR< III: Group 1: 94.2% (n=145) vs Group 2: 86% (n=18), p=0.3). No major periprocedural complications, such as pericardial tamponade or vascular injury requiring additional surgical or interventional therapy, occurred.