A possibility of LVOT obstruction should be considered when performing a VIV and VIR procedure. Type of SHV, flexible ring, less obtuse AMA angle, and depth of SAPIEN XT implant can influence the risk.
Key PointsQuestionIs transcatheter aortic valve implantation (TAVI) noninferior to surgical aortic valve replacement (surgery) in patients aged 70 years or older with severe, symptomatic aortic stenosis and moderately increased operative risk?FindingsIn this randomized clinical trial that included 913 patients at moderately increased operative risk due to age or comorbidity, all-cause mortality at 1 year was 4.6% with TAVI vs 6.6% with surgery, a difference that met the prespecified noninferiority margin of 5%.MeaningAmong patients aged 70 years or older with severe, symptomatic aortic stenosis and moderately increased operative risk, treatment with TAVI was noninferior to surgery with respect to all-cause mortality at 1 year.
Iatrogenic hypoglycemia secondary to ICU tight glycemia control correlates with hospital mortality, respiratory, and cardiac morbidity in patients undergoing cardiac surgery. ICU hyperglycemia index and glycemia temporal variability have no independent correlation with outcomes. Higher glycemia targets should be advised in the perioperative management of patients with diabetes and renal failure, as both conditions independently increase the risk of hypoglycemia occurrence.
The aim of this study was to test the impact of donor and recipient characteristics on the development of primary graft failure (PGF) after heart transplantation (HT) by focusing on the donor's inotropic support. Heart donors and matched recipients data were prospectively collected. Univariate and multivariate analyses were used to determine independent predictors for PGF and peri-operative mortality. The donor's high inotrope requirement was defined as sustained need for dopamine exceeding 10 microg/kg/min and/or alpha agonists exceeding 0.06 microg/kg/min. PGF instead was defined as need for immediate post-HT mechanical circulatory support. Since 2006, we have performed 37 HTs. PGF occurred in six patients (16.2%). Although four patients (66.6%) were weaned off circulatory support, two of them (33.3%) died on mechanical assistance. Total in-hospital mortality was 10.8% (4/37). Upon multivariate analysis, pre-harvesting donor high inotrope dosage was the major determinant for PGF (P=0.03, OR=10.8). Given the organ shortage, many centers accepted marginal hearts assuming the donor's pre-harvest hemodynamic managing has a reduced impact on PGF development. As PGF remains the most lethal postoperative complication, the hazards should be carefully considered when using pre-harvesting high inotrope infusion rates.
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