Optimal haemodynamics during left ventricular assist device support are associated with reduced haemocompatibility-related adverse events.

ABSTRACT: AIMS:Left ventricular assist device (LVAD) therapy improves the haemodynamics of advanced heart failure patients. However, it is unknown whether haemodynamic optimization improves haemocompatibility-related adverse events (HRAEs). This study aimed to assess HRAEs in patients with optimized haemodynamics. METHODS AND RESULTS:Eighty-three outpatients [aged 61 (53-67) years, 50 male] underwent a haemodynamic ramp test at 253 (95-652) days after LVAD implantation, and 51 (61%) had optimized haemodynamics (defined as central venous pressure ?2.2?L/min/m2 ) following LVAD speed adjustment. One-year survival free of any HRAEs (non-surgical bleeding, thromboembolic event, pump thrombosis, or neurological event) was achieved in 75% of the optimized group and in 44% of the non-optimized group (hazard ratio 0.36, 95% confidence interval 0.18-0.73, P?=?0.003). The net haemocompatibility score, using four escalating tiers of hierarchal severity to derive a total score for events, was significantly lower in the optimized group than the non-optimized group (1.02 vs. 2.00 points/patient; incidence rate ratio 0.51, 95% confidence interval 0.29-0.90, P?=?0.021). CONCLUSION:Left ventricular assist device patients in whom haemodynamics can be optimized had greater freedom from HRAEs compared to those without optimized haemodynamics.

SUBMITTER: Imamura T 

PROVIDER: S-EPMC7147872 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature