Visceral Congestion in Heart Failure: Right Ventricular Dysfunction, Splanchnic Hemodynamics, and the Intestinal Microenvironment

Vincenzo B. Polsinelli, Arjun Sinha, Sanjiv J. Shah*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

20 Scopus citations

Abstract

Purpose of Review: Visceral venous congestion of the gut may play a key role in the pathogenesis of right-sided heart failure (HF) and cardiorenal syndromes. Here, we review the role of right ventricular (RV) dysfunction, visceral congestion, splanchnic hemodynamics, and the intestinal microenvironment in the setting of right-sided HF. We review recent literature on this topic, outline possible mechanisms of disease pathogenesis, and discuss potential therapeutics. Recent Findings: There are several mechanisms linking RV–gut interactions via visceral venous congestion which could result in (1) hypoxia and acidosis in enterocytes, which may lead to enhanced sodium–hydrogen exchanger 3 (NHE3) expression with increased sodium and fluid retention; (2) decreased luminal pH in the intestines, which could lead to alteration of the gut microbiome which could increase gut permeability and inflammation; (3) alteration of renal hemodynamics with triggering of the cardiorenal syndrome; and (4) altered phosphate metabolism resulting in increased pulmonary artery stiffening, thereby increasing RV afterload. A wide variety of therapeutic interventions that act on the RV, pulmonary vasculature, intestinal microenvironment, and the kidney could alter these pathways and should be tested in patients with right-sided HF. Summary: The RV–gut axis is an important aspect of HF pathogenesis that deserves more attention. Modulation of the pathways interconnecting the right heart, visceral congestion, and the intestinal microenvironment could be a novel avenue of intervention for right-sided HF.

Original languageEnglish (US)
Pages (from-to)519-528
Number of pages10
JournalCurrent heart failure reports
Volume14
Issue number6
DOIs
StatePublished - Dec 1 2017

Keywords

  • Heart failure
  • Intestine
  • Microbiome
  • Right ventricle
  • Sodium–hydrogen exchanger 3
  • Venous congestion

ASJC Scopus subject areas

  • Emergency Medicine
  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)

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