Key result
Plethysmographic calf blood pressure measurements with a cuff on the calf are reliable immediately after exercise and circulatory arrest, when forefoot cuff measurements are inapplicable.
Why the study?
Is indirect measurement of calf blood pressure with a plethysmographic cuff on the calf reliable compared to other methods in normal subjects and patients with atherosclerosis obliterans?
Observational (n=93)
Is indirect measurement of calf blood pressure with a plethysmographic cuff on the calf reliable compared to other methods in normal subjects and patients with atherosclerosis obliterans?
Plethysmographic calf blood pressure measurements using a calf cuff are reliable immediately after exercise or circulatory arrest, whereas a forefoot cuff is more reliable at rest.
Indirect measurements of calf blood pressure with a plethysmographic cuff on the calf just distal to the pressure cuff was made in 13 normal subjects and 80 patients with atherosclerosis obliterans. Recordings were made at rest and immediately after exercise or timed circulatory arrest, and the results were compared with recordings made with a plethysmograph cuff on the forefoot, with ankle blood pressure measurements in normal subjects, and with intra-arterial measurements in 2 patients. It is concluded that plethysmographic calf blood pressure recordings at rest are most reliable when performed with a plethysmograph cuff on the forefoot. However, this method is inapplicable for measurements immediately after exercise and often after circulatory arrest. The present study shows that during such circumstances reliable calf blood pressure measurements can be performed with a plethysmograph cuff on calf.
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E Lorentsen (1973) conducted an observational in Atherosclerosis obliterans (n=93). Plethysmographic calf blood pressure measurement with a cuff on the calf vs. Plethysmograph cuff on the forefoot, ankle blood pressure, and intra-arterial measurements was evaluated on Reliability of calf blood pressure measurements at rest and after exercise or circulatory arrest. Plethysmographic calf blood pressure measurements with a cuff on the calf are reliable immediately after exercise and circulatory arrest, when forefoot cuff measurements are inapplicable.
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