Hemodynamic effects of increased abdominal pressure

Jack Kashtan, Jerry F. Green, Eric Q. Parsons, James W Holcroft

Research output: Contribution to journalArticle

383 Scopus citations

Abstract

The effect of increased abdominal pressure on cardiac output was analyzed by constructing cardiac function and venous return curves in anesthesized, ventilated dogs. Increasing abdominal pressure to 40 mm Hg by infusing fluid into the abdomen decreased cardiac output by 53% in hypervolemic dogs and by 17% in normovolemic dogs, but increased cardiac output by 50% in hypervolemic dogs. Left ventricular cardiac function curves were shifted downward with increased abdominal pressure, due, at least in part, to increased total peripheral resistance. Venous return curves were constricted by using a right heart bypass. Venous resistance rose from 8 to 17 mm Hg/liter/min with increase at high right atrial pressures. The effect of increased abdominal pressure on cardiac output results from the combined effects of changes in cardiac function and venous return, the direction and magnitude of which depend on intravascular volume and the level of abdominal pressure.

Original languageEnglish (US)
Pages (from-to)249-255
Number of pages7
JournalJournal of Surgical Research
Volume30
Issue number3
DOIs
StatePublished - 1981

ASJC Scopus subject areas

  • Surgery

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