Yukiharu Sugimura

and 9 more

Background: Frailty influences the postoperative outcomes in patients undergoing left ventricular assist device (LVAD) implantation; however, a quantitative evaluation method has not been established. The purpose of the present study was to evaluate whether preoperative ESM mass is associated with short- and long-term clinical outcomes in patients with LVAD. Methods: A total of 119 consecutive patients with LVAD were enrolled between January 2010 and October 2017 at a single heart center. The ESM index and Hounsfield units (HU) of the ESM were calculated by computed tomography for preoperative ESM mass evaluation. We then statistically evaluated the in-hospital mortality, major adverse cardiovascular events (MACE), duration of hospital stay, and long-term survival. Results: In a multivariate Cox regression analysis, ESM index and HU of the ESM indicated no effect on the in-hospital mortality, MACE, and long-term survival. In addition, the ESM index presented a weak but significant negative linear correlation only with the duration of hospital stay (r = -0.21, p < 0.05). In contrast, the model for end-stage liver disease (MELD) score and preoperative venous-arterial extracorporeal membrane oxygenation (va-ECMO) were significant predictive factors for in-hospital mortality (MELD score: p < 0.001, hazard ratio [HR] 1.1; preoperative va-ECMO: p < 0.01, HR 2.72) and MACE (MELD score: p < 0.001, HR 1.07; preoperative va-ECMO: p < 0.005, HR 2.62). Conclusion: Preoperative ESM mass might predict the length of hospital stay in patients undergoing LVAD implantation. In contrast, it had no effect on MACE, in-hospital mortality, or long-term survival in this study.

Moritz Immohr

and 8 more

Objectives: Left ventricular assist device (LVAD) implantation is a common therapy for end-stage heart failure. LVAD patients often present with atrial fibrillation (AF). The purpose of this study was to evaluate the influence of AF in combination with vascular complications on outcome in LVAD patients. Methods: Between 01/2010 and 12/2017, 168 patients (141 male) with end-stage heart failure underwent LVAD implantation at a single center. Patient outcome was retrospectively studied using the Kaplan-Meier method for analyzing crude survival as well as Cox regression for analyzing risk factors. Results: Sixty-two patients suffered from preoperative atrial fibrillation at LVAD implantation. Mean age was 56.8±11.9 years (range: 22–79) and 141 (84%) were male. Postoperatively, vascular or visceral surgical management due to malperfusion was needed in 27 patients (16.1%) and did not correlate with postoperative mortality (p=0.121, HR=1.587, CI=0.885–2.845). Patient with AF had by trend an impaired outcome in Kaplan-Meier analysis (p=0.069). Cox regression analysis revealed postoperative AF (n=53, p=0.316, HR=1.281, CI=0.789–2.079), preoperative mechanical support (MCS) [extracorporeal membrane oxygenator (ECMO), intraaortic balloon pump, Abiomed Impella® (n=74, p=0.160, HR=1.391, CI=0.878-2.206)] as no significant risk factors for death. Conclusions: Our data suggest preoperative AF may be a potential predictor of mortality and impaired long-term outcome in LVAD patients. In contrast preoperative ECLS and vascular or visceral surgery after LVAD implantation did not represent limiting factors with regard to mortality after LVAD implantation.

Yukiharu Sugimura

and 12 more

Background: Although minimally invasive mitral valve surgery (MIMVS) has become the first choice for primary mitral regurgitation (MR) in recent years, clinical evidence in this field is yet limited. The main focus of this study was the analysis of preoperative (Pre), postoperative (Post) and 1-year follow-up (Fu) data in our series of MIMVS in order to identify factors that have an impact on the left ventricular ejection fraction (LVEF) evolution after MIMVS. Methods: We reviewed the perioperative and 1-year follow-up data from 436 patients with primary MR (338 isolated MIMVS und 98 MIMVS combined with tricuspid valve repair) to analyzed patients baseline characteristics, the change of LV size, the postoperative evolution of LVEF and its factors, and the clinical outcomes. Results: The overall mean value of EF slightly decreased at 1-year follow-up (mean change of LVEF: -2.63±9.00%). A significant correlation was observed for PreEF und EF evolution, the higher PreEF the more pronounced decreased EF evolution (in all 436 patients; r= -0.54, p<0.001, in isolated MIMVS; r= -0.54, p<0.001, in combined MIMVS; r= -0.53, p<0.001). Statistically significant differences for negative EF evolution were evident in patients with mild or greater tricuspid valve regurgitation (TR) (in all patients; p<0.05, OR=1.64, in isolated MIMVS; p<0.01, OR=1.93, respectively). Overall clinical outcome in NYHA classification at 1 year was remarkably improved. Conclusions: Our results suggest an excellent clinical outcome at 1 year, although mean LVEF slightly declined over time. TR could be a predictor of worsened FuEF in patients undergoing MIMVS.