Why the study?
Clinicians often rely on blood pressure as an indicator of systemic blood flow, but whether mean arterial pressure correlates with cardiac index during major abdominal surgery under general anesthesia is uncertain.
Population
100 patients having major abdominal surgery under general anesthesia
Comparison
Relationship between mean arterial pressure and cardiac index
Design
Prospective observational cohort study
Authors
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Intraoperative blood pressure may poorly indicate cardiac index; leaves open whether routine cardiac output monitoring improves outcomes in major surgery.
Intraoperative mean arterial pressure does not meaningfully correlate with cardiac index during major abdominal surgery and should not be used as a surrogate for systemic blood flow.
Kouz et al. (2021) studied this question.
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