title: Acute cardiovascular changes of partial left ventriculectomy without mitral valve repair.
abstract: We assessed the acute cardiovascular changes of partial left ventriculectomy (PLV) in a patient with idiopathic dilated cardiomyopathy (IDCM) without mitral regurgitation. Acutely, PLV reduced left ventricular (LV) end-diastolic dimension and volume while increasing LV ejection fraction and cardiac output due to increased HR and SV. Substantial increases in LV filling pressure, possibly due to high LV end-systolic and diastolic elastances, were of concern clinically and the mechanism(s) of change remain unclear. However, one year follow-up showed remarkable improvements in NYHA and VO2 max while maintaining reduced LV volume, increased LVEF, and trivial MR.
authors.affiliation: Jewish Hospital Heart and Lung Institute, Department of Surgery, University of Louisville, Kentucky 40202, USA. rddowl01@athena.louisville.edu
authors.forename: R D
authors.initials: RD
authors.lastname: Dowling
authors.forename: S C
authors.initials: SC
authors.lastname: Koenig
authors.forename: D L
authors.initials: DL
authors.lastname: Ewert
authors.forename: M A
authors.initials: MA
authors.lastname: Laureano
authors.forename: L A
authors.initials: LA
authors.lastname: Gray
mesh_terms: D002311:Cardiomyopathy, Dilated / Q000503:physiopathology* / Q000601:surgery*; D005260:Female; D006352:Heart Ventricles / Q000601:surgery*; D006801:Humans; D008875:Middle Aged; D010101:Oxygen Consumption; D013318:Stroke Volume; D016277:Ventricular Function, Left