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Ultrasound assessment of popliteal vein compliance during a short deflation protocol.
J Appl Physiol (1985). 2008 May; 104(5):1374-80.JA

Abstract

The purpose of the present study was to determine whether ultrasound is a useful tool to measure the venous characteristics of the lower extremity during a standard venous collecting cuff deflation protocol. To accomplish this, lower extremity pressure-cross-sectional area (CSA) and pressure-volume relationships were measured in eight (25 +/- 1 yr) supine subjects. Popliteal vein CSA was assessed by using high-resolution ultrasound, while calf volume changes were simultaneously assessed by using venous occlusion plethysmography (VOP). Pressure-CSA and pressure-volume relationships were assessed at baseline, during the cold pressor (CP) test, and following sublingual nitroglycerin (NTG) administration. Relationships were modeled with a quadratic regression equation, and beta(1) and beta(2) were used as indexes of venous compliance. Popliteal vein regression parameters beta(1) (8.485 +/- 2.616 vs. 7.638 +/- 2.664, baseline vs. CP; 8.485 +/- 2.616 vs. 7.734 +/- 3.076, baseline vs. NTG; both P > 0.05) and beta(2) (-0.0841 +/- 0.0241 vs. -0.0793 +/- 0.0242, baseline vs. CP; -0.0841 +/- 0.0241 vs. -0.0771 +/- 0.0280, baseline vs. NTG; both P > 0.05) were not affected by CP or NTG. Similarly, calf regression parameters beta(1) and beta(2), obtained with VOP, were not altered during either trial. Intraclass correlations for venous compliance assessed with ultrasound and VOP were 0.92 and 0.97, respectively, indicating acceptable reproducibility. These data suggest that ultrasound is a functional and reproducible tool to assess the venous characteristics of the lower extremity, in addition to VOP. Additionally, popliteal vein and calf compliance were not affected by the CP test or NTG.

Authors+Show Affiliations

Department of Health, Nutrition, and Exercise Sciences, 142 Human Performance Laboratory, University of Delaware, 541 South College Avenue, Newark, DE 19716, USA.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18309095

Citation

Young, Colin N., et al. "Ultrasound Assessment of Popliteal Vein Compliance During a Short Deflation Protocol." Journal of Applied Physiology (Bethesda, Md. : 1985), vol. 104, no. 5, 2008, pp. 1374-80.
Young CN, Prasad RY, Fullenkamp AM, et al. Ultrasound assessment of popliteal vein compliance during a short deflation protocol. J Appl Physiol (1985). 2008;104(5):1374-80.
Young, C. N., Prasad, R. Y., Fullenkamp, A. M., Stillbower, M. E., Farquhar, W. B., & Edwards, D. G. (2008). Ultrasound assessment of popliteal vein compliance during a short deflation protocol. Journal of Applied Physiology (Bethesda, Md. : 1985), 104(5), 1374-80. https://doi.org/10.1152/japplphysiol.00825.2007
Young CN, et al. Ultrasound Assessment of Popliteal Vein Compliance During a Short Deflation Protocol. J Appl Physiol (1985). 2008;104(5):1374-80. PubMed PMID: 18309095.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Ultrasound assessment of popliteal vein compliance during a short deflation protocol. AU - Young,Colin N, AU - Prasad,Raju Y, AU - Fullenkamp,Adam M, AU - Stillbower,Michael E, AU - Farquhar,William B, AU - Edwards,David G, Y1 - 2008/02/28/ PY - 2008/3/1/pubmed PY - 2008/6/18/medline PY - 2008/3/1/entrez SP - 1374 EP - 80 JF - Journal of applied physiology (Bethesda, Md. : 1985) JO - J Appl Physiol (1985) VL - 104 IS - 5 N2 - The purpose of the present study was to determine whether ultrasound is a useful tool to measure the venous characteristics of the lower extremity during a standard venous collecting cuff deflation protocol. To accomplish this, lower extremity pressure-cross-sectional area (CSA) and pressure-volume relationships were measured in eight (25 +/- 1 yr) supine subjects. Popliteal vein CSA was assessed by using high-resolution ultrasound, while calf volume changes were simultaneously assessed by using venous occlusion plethysmography (VOP). Pressure-CSA and pressure-volume relationships were assessed at baseline, during the cold pressor (CP) test, and following sublingual nitroglycerin (NTG) administration. Relationships were modeled with a quadratic regression equation, and beta(1) and beta(2) were used as indexes of venous compliance. Popliteal vein regression parameters beta(1) (8.485 +/- 2.616 vs. 7.638 +/- 2.664, baseline vs. CP; 8.485 +/- 2.616 vs. 7.734 +/- 3.076, baseline vs. NTG; both P > 0.05) and beta(2) (-0.0841 +/- 0.0241 vs. -0.0793 +/- 0.0242, baseline vs. CP; -0.0841 +/- 0.0241 vs. -0.0771 +/- 0.0280, baseline vs. NTG; both P > 0.05) were not affected by CP or NTG. Similarly, calf regression parameters beta(1) and beta(2), obtained with VOP, were not altered during either trial. Intraclass correlations for venous compliance assessed with ultrasound and VOP were 0.92 and 0.97, respectively, indicating acceptable reproducibility. These data suggest that ultrasound is a functional and reproducible tool to assess the venous characteristics of the lower extremity, in addition to VOP. Additionally, popliteal vein and calf compliance were not affected by the CP test or NTG. SN - 8750-7587 UR - https://www.unboundmedicine.com/medline/citation/18309095/Ultrasound_assessment_of_popliteal_vein_compliance_during_a_short_deflation_protocol_ DB - PRIME DP - Unbound Medicine ER -