Key result
Infra-renal clamping of the abdominal aorta produced no significant changes in heart rate, blood pressure, cardiac output, arterial blood gases, or physiological deadspace: tidal volume ratio.
Why the study?
Does infra-renal clamping of the abdominal aorta alter hemodynamic and blood gas parameters?
Observational
Does infra-renal clamping of the abdominal aorta alter hemodynamic and blood gas parameters?
Infra-renal clamping of the abdominal aorta does not significantly alter major hemodynamic or blood gas parameters, though clinical vigilance for myocardial ischemia and volume status is recommended.
Answers are grounded in this paper and cite their sources.
Infra-renal aortic clamping appears hemodynamically neutral in this context; leaves open prospective validation in patients with cardiac comorbidity.
No significant changes were found in heart rate, blood pressure, cardiac output, arterial blood gases or physiological deadspace: tidal volume ratio before and after clamping and unclamping the abdominal aorta below the renal vessels. Nevertheless, drugs should be available to reduct the afterload on the heart if any evidence of myocardial ischaemia appears during the period of aortic clamping. The importance of maintaining an adequate circulating blood volume at all times is stressed.
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Askitopolou et al. (1978) conducted an observational in Patients undergoing infra-renal clamping of the abdominal aorta. Infra-renal clamping of the abdominal aorta vs. Before clamping was evaluated on Heart rate, blood pressure, cardiac output, arterial blood gases, and physiological deadspace: tidal volume ratio. Infra-renal clamping of the abdominal aorta produced no significant changes in heart rate, blood pressure, cardiac output, arterial blood gases, or physiological deadspace: tidal volume ratio.
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