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The supposition that the lower limb expands uniformly in circumference during venous occlusion has been investigated. The 3 compartments of the calf were found to be expand to differing degrees depending on the volume of muscle within the compartment. The effect of this phenomenon on the measurement of venous outflow and capacitance using an overlapping strain gauge was assessed. When using an overlapping strain gauge, the anatomical site of overlap was found to alter the measured values of outflow and capacitance by as much as 50%. These errors do not arise with strain gauges designed to fit a small range of limb circumferences, so that no overlap occurs. The reproducibility of plethysmography may be enhanced by attention to the site and degree of overlap of gauges which are designed to fit all sizes of limb. Technicians performing venous occlusion plethysmography should be aware of these variations, so that the examination technique can be standardized.
R Knox, and
M Cramer, and
G Fell, and
P Breslau, and
K Beach, and
D E Strandness
January 1960,
Methods in medical research,
R Knox, and
M Cramer, and
G Fell, and
P Breslau, and
K Beach, and
D E Strandness
July 1957,
Circulation research,
R Knox, and
M Cramer, and
G Fell, and
P Breslau, and
K Beach, and
D E Strandness
January 1967,
Scandinavian journal of clinical and laboratory investigation. Supplementum,
R Knox, and
M Cramer, and
G Fell, and
P Breslau, and
K Beach, and
D E Strandness
March 1994,
International angiology : a journal of the International Union of Angiology,
R Knox, and
M Cramer, and
G Fell, and
P Breslau, and
K Beach, and
D E Strandness
December 1950,
The Medical journal of Australia,
R Knox, and
M Cramer, and
G Fell, and
P Breslau, and
K Beach, and
D E Strandness
May 1982,
Biulleten' eksperimental'noi biologii i meditsiny,
R Knox, and
M Cramer, and
G Fell, and
P Breslau, and
K Beach, and
D E Strandness
January 1967,
Scandinavian journal of clinical and laboratory investigation. Supplementum,
R Knox, and
M Cramer, and
G Fell, and
P Breslau, and
K Beach, and
D E Strandness
December 1970,
Zeitschrift fur Kreislaufforschung,
R Knox, and
M Cramer, and
G Fell, and
P Breslau, and
K Beach, and
D E Strandness
September 1975,
Biomedical engineering,
R Knox, and
M Cramer, and
G Fell, and
P Breslau, and
K Beach, and
D E Strandness
January 1979,
Medical instrumentation,
