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June 13, 2012ASAIO Journal

BNP, LV dimensions, functional shortening, and RVSP improved after LVAD implantation, with greater LV functional improvement observed in patients with less preoperative fibrosis and smaller myocytes.

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Why the study?

Does LVAD support improve LV function and do baseline histological findings predict recovery in patients with idiopathic cardiomyopathy?

Population

Patients with idiopathic cardiomyopathy

Design

Case_series

Follow-up

average 2.91 years

Authors

YYYukiko YamadaSSSatoshi SaitoTNTomohiro Nishinaka

Discussion

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Overview

LVAD histology may inform recovery potential in idiopathic cardiomyopathy; leaves open whether fibrosis assessment should guide patient selection.

Key Points

  • To evaluate left ventricular functional recovery and identify predictive histological and clinical factors following left ventricular assist device (LVAD) implantation.
  • Evaluated 6 patients with idiopathic cardiomyopathy receiving an EVAHEART implantable centrifugal LVAD over a mean duration of 2.91 years.
  • Obtained histological tissue samples from the left ventricular apex at implantation and measured brain natriuretic peptide (BNP) and echocardiographic parameters at 1 and 24 months post-implantation.
  • LVAD support significantly improved BNP levels, left ventricular end-diastolic and end-systolic dimensions, fractional shortening, and right ventricular systolic pressure.
  • Baseline myocardial fibrosis correlated with the rate of BNP change, with advanced fibrosis associated with longer heart-failure duration and higher pulmonary artery pressure.
  • Patients presenting with smaller myocyte size and less fibrosis prior to surgery exhibited superior left ventricular functional improvement during mechanical support.

Structured PICO

Does LVAD support improve LV function and do baseline histological findings predict recovery in patients with idiopathic cardiomyopathy?

P
Population
Patients with idiopathic cardiomyopathy
I
Intervention
Left ventricular assist device (LVAD) support with an EVAHEART implantable centrifugal pump
O
Outcome
Left ventricular functional recovery (assessed via brain natriuretic peptide [BNP] and echocardiographic parameters)surrogate

In patients receiving LVAD support, less preoperative myocardial fibrosis and smaller myocytes are associated with better left ventricular functional recovery.

Cite This Study

Yamada et al. (2012) studied this question.

synapsesocial.com/papers/69c7f3beda77dfd0798c5727https://doi.org/10.1097/mat.0b013e31825b9826
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Incomplete Recovery of Myocyte Contractile Function Despite Improvement of Myocardial Architecture With Left Ventricular Assist Device Support2011 · 81 citations
  2. 2Impact of a durable left ventricular assist device on inflammation and cardiac remodelling in subjects with advanced heart failure2026
  3. 3Comparison of Right and Left Ventricular Responses to Left Ventricular Assist Device Support in Patients With Severe Heart Failure2001 · 224 citations
  4. 4Recovery of Cardiac Function by Long-Term Left Ventricular Support in Patients With End-Stage Cardiomyopathy1998 · 33 citations
  5. 5Impact of centrifugal-flow left ventricular assist device implantation on the disease course, functional class, and quality of life in patients with end-stage heart failure with reduced ejection fraction. A 6-month follow-up experience2024 · 1 citations