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Journal of the Korean Academy of Rehabilitation Medicine 2002;26(3):337-341.
Correlation between Doppler Ultrasonography and Impedance Plethysmography in Lower Extremity Varicose Vein.
Park, Byung Kyu , Kwon, Dong Rak , Park, Jae Heung , Moohn, Ha Noon
Department of Rehabilitation Medicine, Pusan National University College of Medicine, Korea.
하지 정맥류 진단에서 도플러 초음파와 임피던스 혈량측정법의 유용성
박병규, 권동락, 박재흥, 문하눈
부산대학교 의과대학 재활의학교실

To investigate the diagnostic validity of doppler ultrasonography (US) and impedance plethysmography (IPG) using photoplethysmography for evaluation of varicose vein of the lower extremities.

One hundred sixty-six limbs in 83 consecutive patients with varicose vein were included. Venous reflux and deep venous lesions were assessed by doppler US. Venous filling time was evaluated using IPG. Diagnostic capabilities of two methods were analyzed using Receiver Operating Characteristic (ROC) curve.

Doppler US identified superficial venous reflux in sixty-nine of 119 limbs with varicose vein and no abnormalities in 34 of 47 normal limbs (sensitivity, 58%; specifi-city, 75%). IPG demonstrated superficial venous insufficiency in 75 of the affected limbs and normal refill time in 38 of the normal limbs (sensitivity, 63%; specificity, 81%). Sensitivity was increased to 82% when both tests were used together. Area under the ROC curve was 0.66 in doppler US, 0.72 in IPG, and 0.76 in both tests. Deep venous lesion was found in 31 limbs using the both tests; 15 limbs with doppler US and 18 limbs with IPG.

IPG was more superior to doppler US in diagnosing venous insufficiency. The combination of both tests provided more accurate diagnostic information in assessing venous valvular function. (J Korean Acad Rehab Med 2002; 26: 337-341)

Key Words: Varicose vein, Ultrasonography, Plethysmography, Varicose vein


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