Norris C S, Turley G, Barnes R W
Angiology. 1984 Sep;35(9):560-7. doi: 10.1177/000331978403500903.
Quantifying the hemodynamic results of elastic compression requires invasive and cumbersome techniques. Twenty lower extremities (normal, primary, acute and chronic post-thrombotic varicosities) were evaluated with quantitative photoplethysmography (PPG) prior and subsequent to initiating graded compression. The PPG transducer is placed against the stockings and the in vivo method of calibration is used to predict the results of compressive therapy on ambulatory venous pressure (AVP). (table see text) Noninvasive evaluation of patients with quantitative PPG techniques following compressive therapy may provide a better understanding of venous hemodynamics and a rational approach to selection of therapy.
量化弹性压迫的血流动力学结果需要采用侵入性且繁琐的技术。在开始分级压迫之前及之后，使用定量光电容积描记法（PPG）对20条下肢（正常、原发性、急性和慢性血栓形成后静脉曲张）进行了评估。将PPG传感器贴在长袜上，并采用体内校准方法来预测压迫疗法对动态静脉压（AVP）的效果。（见表文）在压迫疗法后采用定量PPG技术对患者进行无创评估，可能会更好地理解静脉血流动力学，并为治疗选择提供合理的方法。
