Barthélémy P, Schlama S, Juhan C
J Mal Vasc. 1985;10(4):303-7.
Venous photoplethysmography (P.P.G.) is a non-invasive diagnostic technique using reflection of infrared light on the skin. The record gives a curve analogous to venous pressure. Normally the venous pressure of the leg decreases in response to calf muscle exercise. We have affixed the P.P.G. transducer to the skin above the medial malleolus and have analyzed the recovery half time (T 1/2) on 170 limbs: 49 normal, 82 with superficial venous insufficiency and 39 with deep venous insufficiency. Reference tests were ascending and retrograde phlebography and venous Doppler evaluation. A tourniquet was used to occlude the superficial venous network. T 1/2 without tourniquet is useful to screen limbs with venous insufficiency. T 1/2 with tourniquet differentiates deep and superficial venous insufficiency. P.P. G. can document the rise of deep venous insufficiency in patients with varicose veins and or repermeation of deep veins or post phlebitic syndrome among patients who have had thrombophlebitis.
静脉光电容积描记法（P.P.G.）是一种利用红外光在皮肤上的反射的非侵入性诊断技术。记录得到的曲线类似于静脉压力曲线。正常情况下，腿部的静脉压力会随着小腿肌肉运动而降低。我们将P.P.G.传感器固定在内踝上方的皮肤上，并对170条肢体的恢复半衰期（T 1/2）进行了分析：49条正常肢体，82条有浅静脉功能不全，39条有深静脉功能不全。参考测试为上行和逆行静脉造影以及静脉多普勒评估。使用止血带来阻断浅静脉网络。不使用止血带时的T 1/2有助于筛查有静脉功能不全的肢体。使用止血带时的T 1/2可区分深静脉和浅静脉功能不全。P.P.G.可以记录静脉曲张患者深静脉功能不全的加重情况，以及血栓性静脉炎患者中深静脉再通或静脉炎后综合征的情况。
