Estudo quantitativo do refluxo da Veia safena interna pelo duplex em paciente com varizes dos membros inferiores




The objective of this study was to compare different quantitation parameters (venous diameter, velocity and flow) of venous reflux by duplex scan in diverse venous disease manifestations, graded by C.E.A.P. classification and their Scores (Anatomic, Clinical and Disability), the occurrence of clinical Complication, the Grade of Severity (mild, moderate and severe) and the long saphenous veins Pattern s of Insufficiency. A total of 94 lower limbs with long saphenous vein insufficiency were evaluated in 70 patients, those have been studied in erect position; the venous reflux was caused by a pneumatic cuff applied around the calf at 100 mmHg and rapidly deflated, allowing retrograde flow to occur and the quantitative variables have been measured. The qualitative parameters were analyzed, evidencing associations (P <0,05), except for Anatomic Score versus Clinical Classification and Clinical Score, and Disability Score versus Pattern of Insufficiency. The volumetric reflux showed more significant statistical differences for all qualitative variables, except for Clinical and Anatomic Scores. To prognosticate the occurence of clinical Complication, a value of 424 ml/min presented simultaneous greater positive (56,3%) and negative (100%) predictive values, accuracy (91,9%), sensitivity (100%) and specificity (90,9%). These results demonstrate the superiority of volumetric flow of long saphenous vein in describe the clinical, anatomic and functional venous disease characteristics, determining a critical value that would prognosticate the complications occurence, allowing the execution of future studies to guidelines the surgical treatment of lower limbs varices


analise volumetrica doppler ultra-sonografia insuficiencia venosa

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