Weingarten M S, Czeredarczuk M, Scovell S, Branas C C, Mignogna G M, Wolferth C C
Department of Surgery, Graduate Hospital, University of Pennsylvania, Philadelphia, USA.
J Vasc Surg. 1996 Nov;24(5):750-4. doi: 10.1016/s0741-5214(96)70008-3.
Air plethysmography has been useful in assessing patients who have chronic venous insufficiency. Limb reflux times determined by color-flow-assisted duplex scanning have been shown to correlate with the severity of chronic venous insufficiency. The purpose of this study was to compare air plethysmographic measurements with reflux times obtained by color-flow-assisted duplex scanning in patients with chronic venous insufficiency.
One hundred twenty-two limbs in 61 consecutive patients with various stages of chronic venous insufficiency were evaluated; air plethysmographic and color-flow-assisted duplex scans were performed at the same sitting. Fifty-nine of the patients had venous ulceration. Values obtained by air plethysmographic scans included venous filling index, ejection volume, residual volume, ejection fraction, and residual volume fraction. Color-flow-assisted duplex scan values included reflux times in the deep and superficial venous segments and total and mean limb reflux times.
Using the Pearson correlation, the venous filling index was found to correlate significantly with total limb venous reflux times, mean total limb reflux times, and venous reflux times in the deep venous system, as determined by color-flow-assisted duplex scans (p < 0.001).
Limb reflux time as determined by color-flow-assisted duplex scans correlated significantly with the air plethysmographic variable accepted as a measure of the severity of venous reflux, the venous filling index. This study confirms the validity of total limb reflux times in the quantification of chronic venous insufficiency.
空气容积描记法在评估慢性静脉功能不全患者时很有用。彩色血流辅助双功扫描测定的肢体反流时间已被证明与慢性静脉功能不全的严重程度相关。本研究的目的是比较慢性静脉功能不全患者的空气容积描记测量值与彩色血流辅助双功扫描获得的反流时间。
对61例不同阶段慢性静脉功能不全的连续患者的122条肢体进行评估；在同一次就诊时进行空气容积描记和彩色血流辅助双功扫描。其中59例患者有静脉溃疡。空气容积描记扫描获得的值包括静脉充盈指数、射血容积、残余容积、射血分数和残余容积分数。彩色血流辅助双功扫描值包括深静脉和浅静脉段的反流时间以及肢体总反流时间和平均反流时间。
通过Pearson相关性分析发现，彩色血流辅助双功扫描测定，静脉充盈指数与肢体总静脉反流时间、肢体平均总反流时间以及深静脉系统的静脉反流时间显著相关（p<0.001）。
彩色血流辅助双功扫描测定的肢体反流时间与被认为是静脉反流严重程度指标的空气容积描记变量静脉充盈指数显著相关。本研究证实了肢体总反流时间在量化慢性静脉功能不全方面的有效性。
