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. 1990 Jan;63(1):45–49. doi: 10.1136/hrt.63.1.45

Changes in the pressure-volume relation of the right ventricle when its loading conditions are modified.

A N Redington 1, M L Rigby 1, E A Shinebourne 1, P J Oldershaw 1
PMCID: PMC1024314  PMID: 2310644

Abstract

Ventricular pressure-volume diagrams were obtained from the right ventricle in patients before and after relief of right ventricular pressure load, in patients with volume loaded right ventricles, and from the left ventricle in patients after the Mustard procedure for transposition of the great arteries. The patterns of ejection during pressure development and decline were similar in patients after relief of pressure load and in those with isolated volume load. A right ventricular pressure load, however, reduced ejection during the two "isovolumic" periods, and the overall shape of the pressure-volume loop resembled that of the normal left ventricle. Pressure-volume diagrams obtained from the left ventricle after the Mustard procedure were indistinguishable from the normal right ventricle, which accords with the hypothesis that the normal right ventricular contraction pattern is a consequence of loading conditions rather than a reflection of an intrinsic property of the myocardium.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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