Veraart J C, Joost van der Kley A M, Neumann H A
Department of Dermatology, Academisch Ziekenhuis, Maastricht, The Netherlands.
J Dermatol Surg Oncol. 1994 Jul;20(7):470-3. doi: 10.1111/j.1524-4725.1994.tb03219.x.
Light reflection rheography (LRR) is appropriate for the global assessment of calf-pump insufficiency regardless of whether it is caused by varicosity, the post-phlebitic syndrome, or deep venous thrombosis. The instrument has been increasingly used by many phlebologists. Digital photoplethysmography (D-PPG) is a further development of this well-established LRR. With this D-PPG instrument it is possible, in contrast to LRR, to calibrate the reflected light.
To compare the venous refilling times of both the LRR and the D-PPG when measured at the same time on the same leg. We also evaluated the practical use of both instruments. In total we performed 152 simultaneous measurements with both instruments.
We found a statistically significant correlation when we compared the venous refilling time of both LRR and D-PPG (r = .664; P < .001). The observed agreement between both instruments for detecting a disturbed venous refilling time (< or = 25 seconds) is 92%.
Both instruments seems to correlate as has been shown in this and other studies. The D-PPG has the advantage of being more handy. Furthermore the reflected light is calibrated, which enables to compare intra- and interindividual measurements.
光反射血流描记术（LRR）适用于对小腿泵功能不全进行全面评估，无论其病因是静脉曲张、血栓后综合征还是深静脉血栓形成。该仪器已被越来越多的静脉病专家使用。数字光电容积描记术（D-PPG）是这种成熟的LRR技术的进一步发展。与LRR不同，使用这种D-PPG仪器可以对反射光进行校准。
比较在同一条腿上同时测量时LRR和D-PPG的静脉再充盈时间。我们还评估了这两种仪器的实际应用情况。我们总共使用这两种仪器进行了152次同步测量。
当我们比较LRR和D-PPG的静脉再充盈时间时，发现两者存在统计学上的显著相关性（r = 0.664；P < 0.001）。两种仪器在检测静脉再充盈时间异常（≤25秒）方面的观察一致性为92%。
正如本研究及其他研究所示，两种仪器似乎具有相关性。D-PPG的优点是更便于使用。此外，反射光经过校准，这使得能够比较个体内和个体间的测量结果。
