Dataset Information

INTERMACS Analysis of Stroke During Support With Continuous-Flow Left Ventricular Assist Devices: Risk Factors and Outcomes.

ABSTRACT: OBJECTIVES:This study sought to evaluate predictors of stroke during left ventricular assist device (LVAD) support from data available prior to implantation, and quantify stroke-related morbidity and mortality. BACKGROUND:Stroke is a major complication after LVAD. Pre-implant factors that influence stroke are not well understood. METHODS:We evaluated all patients in INTERMACS (Interagency Registry for Mechanically Assisted Circulatory Support) who were implanted with continuous flow LVADs from May 1, 2012, to March 31, 2015. Pre-operative risk factors for stroke and stroke incidence, morbidity, and mortality were analyzed. RESULTS:During the study period, 7,112 patients underwent continuous flow LVAD placement. Median follow-up was 9.79 months (range 0.02 to 34.96 months). Of all patients, 752 (10.57%) had at least 1 stroke, with an incidence rate of 0.123 strokes per patient-year. A total of 447 (51.38%) strokes were ischemic and 423 (48.62%) were hemorrhagic. Patients with hemorrhagic stroke had worse survival than those with ischemic strokes (30-day survival: 45.3% vs. 80.7%; p < 0.001). Of patients with a first stroke, 13% had a second stroke. Pre-implant predictors of stroke were female sex (hazard ratio [HR]: 1.51; 95% confidence interval [CI]: 1.25 to 1.82; p < 0.001), pre-implant systolic blood pressure (HR: 1.01; 95% CI: 1.00 to 1.01; p = 0.002), heparin-induced thrombocytopenia (HR: 3.68; 95% CI: 1.60 to 8.47; p = 0.002), intra-aortic balloon pump (HR: 1.21; 95% CI: 1.01 to 1.46; p = 0.043), and primary cardiac diagnosis (ischemic/other/unknown) (p = 0.040). CONCLUSIONS:Despite improvements in LVAD technology, stroke-related morbidity and mortality is substantial. Further investigation is necessary to decrease the risk of this devastating complication.

SUBMITTER: Acharya D

PROVIDER: S-EPMC5743224 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature

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INTERMACS Analysis of Stroke During Support With Continuous-Flow Left Ventricular Assist Devices: Risk Factors and Outcomes.

Acharya Deepak D Loyaga-Rendon Renzo R Morgan Charity J CJ Sands Kara A KA Pamboukian Salpy V SV Rajapreyar Indranee I Holman William L WL Kirklin James K JK Tallaj José A JA

JACC. Heart failure 20171001 10

<h4>Objectives</h4>This study sought to evaluate predictors of stroke during left ventricular assist device (LVAD) support from data available prior to implantation, and quantify stroke-related morbidity and mortality.<h4>Background</h4>Stroke is a major complication after LVAD. Pre-implant factors that influence stroke are not well understood.<h4>Methods</h4>We evaluated all patients in INTERMACS (Interagency Registry for Mechanically Assisted Circulatory Support) who were implanted with contin ...[more]

PMID: 28958345

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Project description:BackgroundBridge to transplantation (BTT) with left ventricular assist devices (LVADs) is a mainstay of therapy for heart failure in patients awaiting heart transplantation (HT). Criteria for HT listing do not differ between patients medically managed and those mechanically bridged to HT. The objectives of the present study were to evaluate the impact of BTT with LVAD on posttransplantation survival, to describe differences in causes of 1-year mortality in medically and mechanically bridged patients, and to evaluate differences in risk factors for 1-year mortality between those with and those without LVAD at the time of HT.MethodsUsing the United Network of Organ Sharing database, we identified 5486 adult, single-organ HT recipients transplanted between 2008 and 2015. Patients were propensity matched for likelihood of LVAD at the time of HT. Kaplan-Meier survival estimates were used to assess the impact of BTT on 1- and 5-year mortality. Logistic regression analysis was used to evaluate the odds ratio of 1-year mortality for patients BTT with LVAD compared with those with medical management across clinically significant variables at various thresholds.ResultsEarly mortality was higher in mechanically bridged patients: 9.5% versus 7.2% mortality at 1 year (P<0.001). BTT patients incurred an increased risk of 1-year mortality with an estimated glomerular filtration rate of 40 to 60 mL·min-1·1.73 m-2 (odds ratio, 1.69; P=0.003) and <40 mL·min-1·1.73 m-2 (odds ratio, 2.16; P=0.005). A similar trend was seen in patients with a body mass index of 25 to 30 kg/m2 (odds ratio, 1.88; P=0.024) and >30 kg/m2 (odds ratio, 2.11; P<0.001). When patients were stratified by BTT status and the presence of risk factors, including age >60 years, estimated glomerular filtration rate <40 mL·min-1·1.73 m-2, and body mass index >30 kg/m2, there were significant differences in 1-year mortality between medium- and high-risk medically and mechanically bridged patients, with 1-year mortality in high-risk BTT patients at 17.6% compared with 10.4% in high-risk medically managed patients.ConclusionsBridge to HT with LVAD, although necessary because of organ scarcity and capable of improving wait list survival, confers a significantly higher risk of early posttransplantation mortality. Patients bridged with mechanical support may require more careful consideration for transplant eligibility after LVAD placement.

Dataset Information

INTERMACS Analysis of Stroke During Support With Continuous-Flow Left Ventricular Assist Devices: Risk Factors and Outcomes.

Publications

INTERMACS Analysis of Stroke During Support With Continuous-Flow Left Ventricular Assist Devices: Risk Factors and Outcomes.

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