Evidence map›Paper›PMID 33450411›Full record

ArticleJournal of cardiac failure2021

Understanding Longitudinal Changes in Pulmonary Vascular Resistance After Left Ventricular Assist Device Implantation.

Gaurav Gulati, Robin Ruthazer, David Denofrio, Amanda R Vest, David Kent, Michael S Kiernan

Abstract read
In one paragraph

Article in Journal of cardiac failure, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

16 citing papers in PubMed.

  1. Article
  2. Review
  3. Article
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  7. Article
  8. Review
  9. How to select a patient for LVAD.Indian journal of thoracic and cardiovascular surgery · 2023
    Review
  10. Article
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  12. Review
  13. Review
  14. Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors.

Gaurav GulatiCardiovascular Center, Tufts Medical Center; Predictive Analytics and Comparative Effectiveness Center. Electronic address: ggulati@tuftsmedicalcenter.org.
Robin RuthazerClinical and Translational Sciences Institute, Tufts Medical Center, Boston, Massachusetts.
David DenofrioCardiovascular Center, Tufts Medical Center.
Amanda R VestCardiovascular Center, Tufts Medical Center.
David KentPredictive Analytics and Comparative Effectiveness Center.
Michael S KiernanCardiovascular Center, Tufts Medical Center.

Funding

CTSA Graduate ProgramTL1TR002546 · NCATS · TUFTS UNIVERSITY BOSTON · PI KENT, DAVID M · 2018 to 2022
$4.2M
Pulmonary vascular remodeling after left ventricular assist device implantationF32HL149251 · NHLBI · TUFTS MEDICAL CENTER · PI GULATI, GAURAV · 2019 to 2019
$86k
NCATS NIH HHS TL1 TR002546NHLBI NIH HHS F32 HL149251
6 · The paper itself

Abstract

backgroundElevated pulmonary vascular resistance (PVR) is common in patients with advanced heart failure. PVR generally improves after left ventricular assist device (LVAD) implantation, but the rate of decrease has not been quantified and the patient characteristics most strongly associated with this improvement are unknown. METHODS AND

resultsWe analyzed 1581 patients from the Interagency Registry for Mechanically Assisted Circulatory Support registry who received a primary continuous-flow LVAD, had a baseline PVR of ≥3 Wood units (WU), and had PVR measured at least once postoperatively. Multivariable linear mixed effects modeling was used to evaluate independent associations between postoperative PVR and patient characteristics. PVR decreased by 1.53 WU (95% confidence interval [CI] 1.27-1.79 WU) per month in the first 3 months postoperatively, and by 0.066 WU (95% CI 0.060-0.070 WU) per month thereafter. Severe mitral regurgitation at any time during follow-up was associated with a 1.29 WU (95% CI 1.05-1.52 WU) higher PVR relative to absence of mitral regurgitation at that time. In a cross-sectional analysis, 15%-25% of patients had persistently elevated PVR of ≥3 WU at any given time within 36 months after LVAD implantation.

conclusionThe PVR tends to decrease rapidly early after implantation, and only more gradually thereafter. Residual mitral regurgitation may be an important contributor to elevated postoperative PVR. Future research is needed to understand the implications of elevated PVR after LVAD implantation and the optimal strategies for prevention and treatment.

Indexed as

Heart-Assist DevicesHeart FailureHeart TransplantationHypertension, PulmonaryCross-Sectional StudiesHumansRetrospective StudiesTreatment OutcomeVascular ResistancehemodynamicsLeft ventricular assist devicemitral regurgitationpulmonary hypertension

Identifiers

PMID33450411
PMCPMC8107116

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.