Abstract
Venous occlusion plethysmography (VOP) is a noninvasive technique widely employed for the detection of deep-vein thrombosis. Previous reports that VOP outflow curves are closely fit by a first-order exponential suggest that venous compliance and resistance are nearly constant. Typically, however, the venous compliance function has a sigmoid shape; in addition, the resistance in a collapsing tube must increase. This paradox was resolved by the surprising finding that for realistic nonlinear compliance and resistance these nonlinearities cancel, producing a quasilinear venous outflow that approximates a simple exponential.
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Abbreviations
- A :
-
area m2
- C :
-
compliancedV/dP m5N−1
- D :
-
diameter m
- g :
-
gravitational acceleration m s−2
- H c :
-
height or elevation of the calf m
- h l :
-
head loss m
- L :
-
length m
- P c :
-
calf venous blood pressure N m−2
- P h :
-
right heart blood pressure N m−2
- Q :
-
rate of calf emptying (V′ c=V′b) m3 s−1
- R :
-
flow resistance ΔP/Q N s m−5
- t :
-
time s
- U :
-
average velocity m s−1
- V c :
-
segmental calf volume including tissues (V 1) and blood (V b) m3
- ΔV c :
-
change in calf volume due to venous blood volume change =V b m3
- VC :
-
venous capacitance = ΔV c/Vc immediately prior to release of thigh occlusion pressure per cent
- ϱ:
-
density kg m−3
- μ:
-
dynamic (absolute) viscosity N s m−2
- b :
-
blood
- c :
-
calf
- h :
-
heart
- 0:
-
initial or resting value
References
Anderson, F. A. Jr. andWheeler, H. B. (1979) Venous occlusion plethysmography for the detection of venous thrombosis.Med. Instrum.,13, 350–354.
Anderson, F. A. Jr. (1984) Quantification of the degree of venous outflow obstruction from venous occlusion plethysmography. Doctoral Dissertation. Worcester Polytechnic Institute, Worcester, Massachusetts, USA.
Carnahan, B., Luther, H. A. andWilkes, J. O. (1969)Applied numerical methods. John Wiley & Sons Inc., New York, 363–366.
Caro, C. G., Pedley, R. C. andSeed, W. A. (1978)The mechanics of the circulation. Oxford University Press, New York.
Dahn, I. andEiriksson, E. (1968) Plethysmographic diagnosis of deep venous thrombosis of the leg.Acta. Chir. Scand., Suppl. 398, 33–42.
Hesse, B. (1970) Venous pressure changes during congestion.Acta. Med. Scand.,188, 447–449.
Hewlett, A. W. andvan Zwaluwenburg, J. G. (1909) The rate of blood flow in the arm.Heart,1, 87–97.
Hull, R., Hirsh, J., Sackett, D. L., Taylor, D. W., Carter, E., Turpie, A. G. G., Zielinsky, A., Powers, P. andGent, M. (1981) Replacement of venography in suspected venous thrombosis by impedance plethysmography and125I-fibrinogen leg scanning.Ann. Intern. Med.,94, 12–15.
Jaffrin, M. Y. (1976) Rationale of plethysmographic detection of deep venous thrombosis. Proc. 29th Ann. Conf. on Eng. in Med. and Biol.,18, 317.
Kay, S. M., Peura, R. A., Wheeler, H. B. andAnderson, F. A. Jr. (1975) Quantification of the venous outflow portion of an impedance phlebogram. Proc. 3rd Ann. New England Bioeng. Conf., Pergamon Press, New York, 159–170.
Lewis, T. andGrant, R. (1925) Observation upon reactive hyperemia in man.Heart,12, 73–120.
Ludbrook, J. (1966)Aspects of venous function in the lower limbs. Charles C. Thomas, Springfield, Illinois.
Seagar, A. D., Gibbs, J. M. andDavis, F. M. (1984) Interpretation of venous occlusion plethysmographic measurements using a simple model.Med. & Biol. Eng. & Comput.,22, 12–18.
Strandness, D. E. andSumner, D. S. (1975)Hemodynamics for surgeons. Grune & Stratton, New York, 496–500.
Wheeler, H. B., O'Donnell, J. A., Anderson, F. A. Jr. andBenedict, K. Jr. (1974) Occlusive impedance plethysmography: a diagnostic procedure for venous thrombosis and pulmonary embolism.Progr. Cardiovasc. Dis.,17, 199–205.
Wheeler, H. B., andAnderson, F. A. Jr. (1982) Impedance plethysmography. InManual for the vascular diagnostic laboratory.Yao, S. J. T. andKempozinski, R. F. (Eds.), Year Book Medical Publishers, Chicago, 277–304.
Wheeler, H. B., andAnderson, F. A. Jr. (1985) The diagnosis of venous thrombosis by impedance plethysmography. InNoninvasive diagnostic techniques in vascular disease, 3rd. ed.Bernstein, E. F. (Ed.), C.V. Mosby Co., St. Louis, 755–765.
White, F. M. (1974)Viscous fluid flow. McGraw-Hill, New York.
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Anderson, F.A., Durgin, W.W. & Wheeler, H.B. Interpretation of venous occlusion plethysmography using a nonlinear model. Med. Biol. Eng. Comput. 24, 379–385 (1986). https://doi.org/10.1007/BF02442692
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DOI: https://doi.org/10.1007/BF02442692