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Intraoperative Assessment of Acute Hemodynamic Changes After Partial Left Ventriculectomy
Author(s) -
Koenig Steven,
Shafie Mohammad,
Pearson Anthony,
Laureano Mary Ann,
Cerrito Pat,
Ewert Daniel,
Schroeder Mark,
Dowling Robert D.
Publication year - 1985
Publication title -
echocardiography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 62
eISSN - 1540-8175
pISSN - 0742-2822
DOI - 10.1111/j.1540-8175.1985.tb01265.x
Subject(s) - medicine , contractility , stroke volume , cardiology , ejection fraction , cardiac output , cardiac function curve , inferior vena cava , dilated cardiomyopathy , hemodynamics , heart failure
Partial left ventriculectomy (PLV) has been introduced as an alternative surgical therapy for patients with end‐stage dilated cardiomyopathy. The physiological benefits of PLV are relatively unknown. Therefore, the objective of this study was to determine the acute effects of PLV by measuring cardiac function before and after PLV. Aortic and left ventricular pressures and aortic flow were measured in eight patients. Continuous, beat‐to‐beat data were recorded and compared pre‐PLV and post‐PLV with and without inferior vena cava (IVC) occlusions. PLV increased cardiac output (0.93 ± 0.5, p = 0.01) as a result of increased stroke volume (5.12 ± 4.24, p = 0.06) and heart rate (14.5 ± 8.44, p = 0.02). Contractility (± dP/dt, 240.33 ± 74.28, p = 0.001) and external work (650.8 ± 320.4, p = 0.01) were also improved. Left ventricular end‐diastolic elastance (0.15 ± 0.14, p = 0.10) nearly doubled after PLV. Our results indicated an improved cardiac function as measured by increased cardiac output, stroke volume, ejection fraction (EF), and contractility.