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Physiologic variations in lower extremity venous valvular function.
Ann Vasc Surg. 1995 Jan; 9(1):102-8.AV

Abstract

We conducted this study to investigate the physiologic variations in venous valvular function and calf muscle pump function that occur in normal limbs after prolonged stationary standing. Twenty-two limbs from 11 healthy volunteers were studied after a brief period of activity and after 4 to 6 hours of stationary standing. Vein diameter, peak reflux flow velocity (PRFV), and valve closure time (VCT) were measured with duplex scanning in the standing position in the common femoral vein (CFV), superficial femoral vein (SFV), popliteal vein (POP), proximal greater saphenous vein (GSV), and greater saphenous vein at the knee (kGSV). Pneumatic rapid inflation-deflation cuffs were used to elicit reflux. Vein cross-sectional area (VA) and peak reflux volume (PRVol) were calculated. Venous volume (VV), venous filling index (VFI), ejection fraction (EF), residual volume fraction (RVF), and outflow fraction (OF) were measured with air plethysmography in all limbs. After stationary standing, there was no significant change or trend toward an increase in diameter or VA in any of the deep veins and there was no change in the PRFV or VCT. In the proximal GSV there was a significant increase in diameter (p = 0.0001) and VCT (p = 0.048) without a change in PRFV. No significant changes were noted in the kGSV. In the GSV the PRFV was significantly lower (p < 0.05) and the VCT significantly shorter (p < 0.05) compared with the SFV and POP but values were no different from those in the CFV. The PRFV was significantly higher in the SFV (p < 0.0001) and the POP (p < 0.002) compared with that in the CFV.(

ABSTRACT

TRUNCATED AT 250 WORDS)

Authors+Show Affiliations

Department of Surgery, University of North Carolina School of Medicine, Chapel Hill 27599-7210, USA.No 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

7703053

Citation

Criado, E, et al. "Physiologic Variations in Lower Extremity Venous Valvular Function." Annals of Vascular Surgery, vol. 9, no. 1, 1995, pp. 102-8.
Criado E, Daniel PF, Marston W, et al. Physiologic variations in lower extremity venous valvular function. Ann Vasc Surg. 1995;9(1):102-8.
Criado, E., Daniel, P. F., Marston, W., Mansfield, D. I., & Keagy, B. A. (1995). Physiologic variations in lower extremity venous valvular function. Annals of Vascular Surgery, 9(1), 102-8.
Criado E, et al. Physiologic Variations in Lower Extremity Venous Valvular Function. Ann Vasc Surg. 1995;9(1):102-8. PubMed PMID: 7703053.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Physiologic variations in lower extremity venous valvular function. AU - Criado,E, AU - Daniel,P F, AU - Marston,W, AU - Mansfield,D I, AU - Keagy,B A, PY - 1995/1/1/pubmed PY - 1995/1/1/medline PY - 1995/1/1/entrez SP - 102 EP - 8 JF - Annals of vascular surgery JO - Ann Vasc Surg VL - 9 IS - 1 N2 - We conducted this study to investigate the physiologic variations in venous valvular function and calf muscle pump function that occur in normal limbs after prolonged stationary standing. Twenty-two limbs from 11 healthy volunteers were studied after a brief period of activity and after 4 to 6 hours of stationary standing. Vein diameter, peak reflux flow velocity (PRFV), and valve closure time (VCT) were measured with duplex scanning in the standing position in the common femoral vein (CFV), superficial femoral vein (SFV), popliteal vein (POP), proximal greater saphenous vein (GSV), and greater saphenous vein at the knee (kGSV). Pneumatic rapid inflation-deflation cuffs were used to elicit reflux. Vein cross-sectional area (VA) and peak reflux volume (PRVol) were calculated. Venous volume (VV), venous filling index (VFI), ejection fraction (EF), residual volume fraction (RVF), and outflow fraction (OF) were measured with air plethysmography in all limbs. After stationary standing, there was no significant change or trend toward an increase in diameter or VA in any of the deep veins and there was no change in the PRFV or VCT. In the proximal GSV there was a significant increase in diameter (p = 0.0001) and VCT (p = 0.048) without a change in PRFV. No significant changes were noted in the kGSV. In the GSV the PRFV was significantly lower (p < 0.05) and the VCT significantly shorter (p < 0.05) compared with the SFV and POP but values were no different from those in the CFV. The PRFV was significantly higher in the SFV (p < 0.0001) and the POP (p < 0.002) compared with that in the CFV.(ABSTRACT TRUNCATED AT 250 WORDS) SN - 0890-5096 UR - https://www.unboundmedicine.com/medline/citation/7703053/Physiologic_variations_in_lower_extremity_venous_valvular_function_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0890-5096(07)60112-5 DB - PRIME DP - Unbound Medicine ER -