Abstract

SUMMARY The invasive technique of arterial cannulation for blood pressure measurement is justifiable by the high yield of information with minimal risk to the patient. It also facilitates the collection of arterial blood samples for blood gas analysis, electrolyte measurement, and other studies. Recent, more sophisticated noninvasive blood pressure devices may reduce the need for direct invasive measurements; automated, noninvasive blood pressure devices now are used routinely intraoperatively.

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