Rate of Drainage of the Blood Vessels of the Limbs by Gravity

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Abstract
Simple techniques are described for measuring time required for maximum drainage of the blood vessels of the limbs by gravity. This occurs in approximately 30-35 seconds in the case of the legs, 15 seconds from the forearm and hand and 5 seconds from the hand. By means of these techniques an approximate assessment of rate of venous drainage from the limbs in the first 5 seconds gave the following results: legs, 26.0 [plus or minus] 3.6 (S.D.); forearm and hand, 53.3 [plus or minus] 5.3 (S.D.); and hand, 53.7 [plus or minus] 14.5 (S.D.). Results indicate the freedom with which venous drainage occurs and the lack of obstruction to venous drainage that exists.

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