Journal of cardiothoracic and vascular anesthesia
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J. Cardiothorac. Vasc. Anesth. · Feb 2004
Comparative StudyNoninvasive measurement of intrapulmonary shunting.
To investigate the accuracy and precision of a noninvasive approach to measurement of pulmonary shunt fraction using simultaneous application of 2 fundamental respiratory mixing equations: the direct Fick equation for oxygen and the shunt equation of Berggren. This can be performed without mixed venous blood sampling and requires measurement of oxygen uptake and pulmonary blood flow. ⋯ The noninvasive method is an accurate substitute for invasive shunt fraction measurement with mixed venous blood sampling.
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J. Cardiothorac. Vasc. Anesth. · Feb 2004
Perioperative beta-blockade: a survey of physician attitudes in the department of Veterans Affairs.
To delineate clinician opinion on the efficacy, safety, and logistics of perioperative beta-adrenergic blockade for patients undergoing noncardiac surgery. ⋯ A wide range of opinions by clinicians regarding the efficacy, safety, and logistics of perioperative beta-adrenergic blockade was encountered, suggesting need for additional clinical research and centralized efforts at increasing compliance with existing guidelines.