Clinical and hemodynamic significance of the greater saphenous vein diameter in chronic venous insufficiency

被引:71
|
作者
Navarro, TP
Delis, KT
Ribeiro, AP
机构
[1] Fed Univ Hosp, Vasc Lab, BR-30315350 Belo Horizonte, MG, Brazil
[2] Univ London Imperial Coll Sci Technol & Med, Fac Med, St Marys Hosp, Acad Vasc Surg, London, England
关键词
D O I
10.1001/archsurg.137.11.1233
中图分类号
R61 [外科手术学];
学科分类号
摘要
Hypothesis: As the compliant greater saphenous vein (GSV) adjusts its luminal size to the level of transmural pressure, measurement of its diameter, reflecting the severity of hemodynamic compromise in limbs with GSV reflux, may simplify the hemodynamic criteria of patient selection for saphenectomy. Objective: To evaluate the clinical significance of GSV diameter determined in the thigh and calf as a marker of global hemodynamic impairment and clinical severity in a model comprising patients with saphenofemoral junction and truncal GSV incompetence. Design: A cohort study. Setting: University-associated tertiary care hospitals in Brazil and England. Patients: Eighty-five consecutive patients, aged 28 to 82 (meanly 46.2) years; 112 lower limbs with saphenofemoral junction and truncal GSV incompetence were investigated. Interventions: Clinical examination was followed by clinical, etiological, anatomical, and pathophysiological classification (CEAP), vein duplex, and air plethysmography. The GSV diameter was measured on standing at the knee, and at 10, 20, and 30 cm above and below the knee, and in the thigh and calf, respectively, using B-mode imaging. The venous filling index (VFI), venous volume (W), and residual volume fraction (RVF) were measured by air plethysmography. Main Outcome Measures: The GSV diameter was correlated with the VFI, VV, RVF, and CEAP. The value of the GSV diameter for predicting the presence of critical reflux (VFI >7 mL/s) or the absence of abnormal reflux (VFI <2, mL/s) was determined with receiver-operator curves. Results: The GSV diameter increased significantly overall with CEAP (P<.001) and also increased progressively With proximity to the saphenofemoral junction. The VFI, W, and RVF increased significantly from CEAPO through CEAP(4-6); the VFI correlated well with W, RVF, and CEAP (P<.001 for all). The GSV diameter at all 7 limb levels studied correlated well with VV (except at the distal calf), VFI, RVF, and CEAP (Pless than or equal to.009 for All). A GSV diameter of 5.5 mm or less predicted the absence of abnormal I reflux, with a sensitivity of 78%, a specificity of 87%, positive and negative predictive values of 78%, and an accuracy of 82%. A GSV diameter of 7.3 mm or greater predicted critical reflux (VFI >7 mL/s), with An 80% sensitivity, an 85% specificity, and an 84% accuracy. Conclusion: The GSV diameter proved to be a relatively accurate measure of hemodynamic impairment and clinical severity in a model of saphenofernoral junction and GSV incompetence, predicting not only the absence of abnormal reflux, but also the presence of ritical venous incompetence, assisting in clinical decision making before considering greater saphenectomy.
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页码:1233 / 1237
页数:5
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