Approaches to determination of left ventricular volume and ejection fraction by real‐time two‐dimensional echocardiography

Clinical Cardiology - Tập 2 Số 4 - Trang 257-263 - 1979
Alfred F. Parisi1, P F Moynihan1, Charles L. Feldman1, Edward D. Folland1
1From the Department of Medicine (Cardiology Section), V. A. Medical Center, West Roxbury, MA and Peter Bent Brigham Hospital and Harvard Medical School, Boston, MA, USA

Tóm tắt

AbstractLeft ventricular volumes and ejection fraction were derived from real time two‐dimensional echocardio‐graphic images (2 DE) and single plane (RAO) left ventricular cineangiograms in a series of 50 patients. Prospective application of a series of 6 alternate algorithms showed that a modified Simpson's rule approach using mitral and papillary muscle cross sections and an apical four chamber view provided the best 2 DE — angiographic correlations: for end‐diastolic volume r = 0.82, SEE = 39 ml; for end‐systolic volume r = 0.90, SEE = 29 ml and for ejection fraction r = 0.80, SEE = 0.09. The large SEE for volume determination indicates that further refinements are necessary to predict left ventricular volumes adequately; however, ejection fraction can be derived with an accuracy which allows practical clinical decisions in patients with satisfactory 2 DE images.

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Tài liệu tham khảo

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Clinical Cardiology

Tập 2 Số 4

257-263

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