![]() ![]() ![]() 2However, no long-term measurements or measurements of actual fluid volumes after hypotension with spinal or epidural anesthesia are available. ![]() Previous short-term (20-min) observations without concomitant fluid administration have suggested a movement of fluid from the interstitial to the intravascular space after epidural anesthesia with hypotension based on hemoglobin measurements, 1and the same observation has been made in volunteers with induced “functional” hypovolemia after application of lower body negative pressure. A COMMON physiologic effect of epidural and spinal anesthesia is hypotension, primarily due to blockade of the sympathetic nervous system causing arterial and venous vasodilation with subsequent “functional” hypovolemia.
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