Macklon N S, Greer I A
Department of Obstetrics and Gynaecology, University of Glasgow, UK.
Br J Obstet Gynaecol. 1997 Feb;104(2):198-200. doi: 10.1111/j.1471-0528.1997.tb11044.x.
To study the vessel wall diameter and blood flow velocity within the proximal deep venous system of the leg in the puerperium and to compare these measures with respect to the left versus right leg, 4th versus 42nd postnatal day, and vaginal versus caesarean delivery.
A combined longitudinal and cross-sectional observational study.
The ultrasound department of a teaching maternity hospital.
A reduction in vessel diameter and an increase in flow velocity was observed between the 4th and 42nd postnatal day. Vessel diameter was greater and flow velocity was reduced in the left compared to the right leg. In those delivered by caesarean section, a trend towards reduced flow velocity in the proximal deep leg veins was observed when compared with those delivered vaginally.
These data suggest possible physiological mechanisms behind previous clinical observations relating to the period of greatest risk of deep vein thrombosis in the puerperium, the relative preponderance of left sided deep vein thrombosis and the risk of deep vein thrombosis associated with caesarean section.
研究产褥期腿部近端深静脉系统的血管壁直径和血流速度，并比较这些指标在左右腿、产后第4天与第42天以及阴道分娩与剖宫产之间的差异。
一项纵向和横断面相结合的观察性研究。
一家教学妇产医院的超声科。
产后第4天至第42天期间观察到血管直径减小，血流速度增加。与右腿相比，左腿的血管直径更大，血流速度更低。与阴道分娩的产妇相比，剖宫产产妇的腿部近端深静脉血流速度有降低的趋势。
这些数据提示了以往临床观察结果背后可能的生理机制，这些观察结果涉及产褥期深静脉血栓形成风险最高的时期、左侧深静脉血栓形成的相对优势以及剖宫产相关的深静脉血栓形成风险。
