光电容积描记诊断下肢静脉瓣膜功能不全的临床评价—静脉造影对照分析

目的 评价光电容积描记（PPG）对下肢深静脉瓣膜功能不全诊断的临床价值。方法 用光电容积描记测定原发性深静脉瓣膜功能不全、单纯浅静脉瓣膜功能不全和单纯交通静脉瓣膜功能不全共181例206条肢体的静脉再充盈时间（VRT），并与静脉造影作对照分析。结果 以静脉造影作对照，PPG诊断下肢静脉瓣膜功能不全的诊断灵敏度为89.8%，特异性为83.3%，结论 PPG在检测下肢静脉瓣膜功能不全有重要临床价值。具有无创伤、无痛苦、无过敏的优点，可作为静脉造影前的筛选和术后患者随访复查的重要手段。

CLINICAL VALUE OF PHOTOPLETHYSMOGRAPHY IN THE DIAGNOSIS OF VENOUS VALVULAR INCOMPETENCE OF LOWER EXTREMITYCOMPARISON WITH VENOGRAPHY

Objective To evaluate the clinica l value of photoplethysmography (PPG) in the diagnosis of venous valvular incompet ence of lower extremity. Methods Two hundreds and six lower limbs in 18 1 patients including primary deep venous incompetence(PDVI), simple superfici al veins incompetence and simple cross veins incompetence were examined by PPG in the assessment of venous refill time(VRT). All limbs underwent deep vein ve nography. Results Using venography as control the sensiti vity of PPG was 89.8% and the specificity was 83.3 % in the diagnosis of venous valvular incompetence of lower extremity. Conclusion PPG could be taken as clinical di agnostic method for venous valvular incompetence of the lower extremity. The feature of PPG is non-invasive, painless with non-allergic reaction. The au thors suggest that PPG can be used as a screening procedure for performing veno graphy and postoperative follow-up.