Qualitative Evaluation of Coronary Flow during Anesthetic Induction Using Thallium‐201 Perfusion Scans
作者:
Bruce,
Kleinman Robert,
Henkin Silas,
Glisson Adel,
El-Etr Mamdouh,
Bakhos Henry,
Sullivan Alvaro,
Montoya Roque,
期刊:
Anesthesiology
(OVID Available online 1986)
卷期:
Volume 64,
issue 2
页码: 157-164
ISSN:0003-3022
年代: 1986
出版商: OVID
关键词: Anesthetics, intravenous;fentanyl, Anesthetics, volatile;halothane, Heart;coronary flow;ischemia;perfusion scans
数据来源: OVID
摘要:
Qualitative distribution of coronary flow using thallium-201 perfusion scans immediately postintubation was studied in 22 patients scheduled for elective coronary artery bypass surgery. Ten patients received a thiopental (4 mg/kg) and halothane induction. Twelve patients received a fentanyl (100 μg/kg) induction. Baseline thallium-201 perfusion scans were performed 24 h prior to surgery. These scans were compared with the scans performed postintubation. A thallium-positive scan was accepted as evidence of relative hypo-perfusion. Baseline hemodynamic and ECG data were obtained prior to induction of anesthesia. These data were compared with the data obtained postintubation. Ten patients developed postintubation thallium-perfusion scan defects (thallium-positive scan), even though there was no statistical difference between their baseline hemodynamics and hemodynamics at the time of intubation. There was no difference in the incidence of thallium-positive scans between those patients anesthetized by fentanyl and those patients anesthetized with thiopental-halothane. The authors conclude that relative hypoperfusion, and possibly ischemia, occurred in 45% of patients studied, despite stable hemodynamics, and that the incidence of these events was the same with two different anesthetic techniques.
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