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During pregnancy aortocaval compression:
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A. Correct. Fetal distress may result from reduced uteroplacental perfusion pressure caused by aortic compression.
B. Incorrect. Aortocaval compression is maximal in the supine position.
C. Incorrect. Hypotension may not occur if a rise in systemic vascular resistance (e.g. due to aortic compression) occurs in addition to a fall in cardiac output.
D. Incorrect. Aortocaval compression is minimal in the full lateral position. It is reduced in the modified supine position with 15 degrees of left lateral tilt.
E. Incorrect. Aortocaval compression may lead to a reduction in maternal cardiac output.
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