Radionuclide angiographic assessment of global and segmental left ventricular function at rest and during exercise after coronary artery bypass graft surgery

Journal Article · Mon Nov 01 04:00:00 EST 1982 · Circulation; (United States)

DOI:https://doi.org/10.1161/01.CIR.66.5.972· OSTI ID:5519390

Lim, Y L; Kalff, V; Kelly, M J; Mason, P J; Currie, P J; Harper, R W; Anderson, S T; Federman, J; Stirling, G R; Pitt, A

Left ventricular ejection fraction (LVEF) was measured by radionuclide angiography at rest and during supine bicycle exercise before and 3 months after coronary artery bypass graft surgery (CABG) in 20 patients with chronic stable angina. The right anterior oblique gated first-pass technique was used to assess LVEF response to maximal exercise (Wmax), while the left anterior oblique equilibrium-gated technique was used to assess LVEF and relative LV volume changes during graded submaximal execise. The five subjects in whom LVEF decreased significantly during exercise postoperatively all had one or more blocked or stenosed grafts. This study documents, by two independent radionuclide techniques, an improved LVEF during exercise at an increased maximal work capacity and rate-pressure product 3 months after successful CABG. (JMT)

• Research Organization: Alfred Hospital, Melbourne, Victoria, Australia
• OSTI ID: 5519390
• Journal Information: Circulation; (United States), Journal Name: Circulation; (United States) Vol. 66:5; ISSN CIRCA
• Country of Publication: United States
• Language: English

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