title: Left ventricular function early after aortic valve replacement for aortic regurgitation: Assessment by gated radionuclide ventriculography.
abstract: This study characterizes left ventricular performance early after aortic valve replacement for severe isolated aortic regurgitation. Gated radionuclide ventriculography studies in 13 patients showed that left ventricular end-diastolic volume was reduced after surgery and that ejection fraction dropped significantly. Despite the fall in ejection fraction, the postoperative cardiac index was significantly greater than the preoperative value. Radionuclide ventriculography is a useful and reliable means of noninvasively assessing left ventricular function soon after aortic valve replacement for aortic regurgitation.
authors.affiliation: Clayton Foundation for Research Laboratory-St. Luke's Episcopal Hospital, the Texas Heart Institute, and Baylor College of Medicine Department of Radiology, Houston, Texas.
authors.forename: Robert A.
authors.initials: RA
authors.lastname: Hardy
authors.forename: E Gordon
authors.initials: EG
authors.lastname: Depuey
authors.forename: Virendra S.
authors.initials: VS
authors.lastname: Mathur
authors.forename: Robert E.
authors.initials: RE
authors.lastname: Sonnemaker
authors.forename: Efrain
authors.initials: E
authors.lastname: Garcia
authors.forename: Carlos
authors.initials: C
authors.lastname: De Castro
authors.forename: John E.
authors.initials: JE
authors.lastname: Burdine
authors.forename: Robert J.
authors.initials: RJ
authors.lastname: Hall