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pubmed-article:1290391pubmed:abstractTextThis clinical study analysed the changes in right ventricular ejection fraction induced by changes in right ventricular afterload using a new thermodilution catheter linked to a rapid response computer which allowed instantaneous measurements of the right ventricular ejection fraction. The first group comprised 16 patients referred for coronary angioplasty with single vessel disease (isolated proximal stenosis of one of the two main branches of the left coronary artery) and a normal left ventricular ejection fraction (> or = 55%) and mean pulmonary artery pressure of < 25 mmHg: right ventricular ejection fraction and mean pulmonary artery pressure were measured under basal conditions and after 60 seconds' coronary occlusion with the balloon catheter in order to assess the effects of the reactional increase in afterload on the right ventricular ejection fraction. The second group comprised 11 patients with dilated primary cardiomyopathy with decreased left ventricular ejection fraction (< 50%) and mean pulmonary artery pressure > or = 25 mmHg: the right ventricular ejection fraction and mean pulmonary artery pressure were measured under basal conditions and after intravenous trinitrin (performed to evaluate the pulmonary reaction to vasodilators) in order to analyse the effects of the reduction of afterload on right ventricular ejection fraction. Negative linear correlations were observed between the right ventricular ejection fraction and mean pulmonary artery pressure under basal conditions (r = -0.72; p < 0.005) and between the right ventricular ejection fraction and mean pulmonary artery pressure after changing the conditions of afterload (r = -0.82; p < 0.005).(ABSTRACT TRUNCATED AT 250 WORDS)lld:pubmed
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pubmed-article:1290391pubmed:dateRevised2010-11-18lld:pubmed
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pubmed-article:1290391pubmed:year1992lld:pubmed
pubmed-article:1290391pubmed:articleTitle[Relationship between right ventricular ejection fraction and pulmonary pressure in man].lld:pubmed
pubmed-article:1290391pubmed:affiliationCardiologie A et B, CHU Nancy-Brabois, Vandoeuvre-lès-Nancy.lld:pubmed
pubmed-article:1290391pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:1290391pubmed:publicationTypeEnglish Abstractlld:pubmed
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