微移动足部压缩装置与气动压缩装置比较。
Micro-mobile foot compression device compared with pneumatic compression device.
机构信息
Western Slope Study Group, 2211 N7th Street, Grand Junction, CO 81501, USA.
出版信息
Clin Orthop Relat Res. 2011 Jun;469(6):1692-700. doi: 10.1007/s11999-011-1847-5. Epub 2011 Mar 15.
BACKGROUND
A combination mechanical-pharmacologic regimen is an accepted prophylactic treatment against symptomatic venous thromboembolism for patients undergoing total hip and knee arthroplasties. Foot pumps have been recognized as effective mechanical devices. Research suggests pharmacologic prophylaxis for venous thromboembolism is associated with complications and foot pumps offer an adjunct or alternative approach. Presumably the effectiveness of foot pumps relate to enhancement of venous flow.
QUESTIONS/PURPOSES: We compared an established foot pump system with a new mobile foot pump for their ability to influence mean peak venous velocity in the common femoral, popliteal, and posterior tibial veins.
METHODS
We evaluated 60 healthy subjects with the established and the novel foot-pump systems. Ultrasonography was used to measure baseline and peak venous velocity with mechanical compression. We constructed 95% confidence intervals (CI) on the mean differences between the two devices to establish equivalence limits. We compared ratios of peak velocity to resting velocity. Subjects subjectively rated the two foot pumps with respect to size, fit, and comfort.
RESULTS
The 95% CI test for equivalence of the mean differences between the two devices was inconclusive. The novel device augmented the venous velocity 11 times greater than the resting velocity in the posterior tibial vein and three times greater than the resting velocity in the popliteal vein. The established foot pump augmented the venous velocity 15 times greater than the resting velocity in the posterior tibial vein and four times greater than the resting velocity in the popliteal vein. The novel device rated better for size, fit, and comfort when compared with the established device.
CONCLUSIONS
The established foot pump tended to be associated with greater peak velocities; the novel device produced more consistent mean peak venous velocities and may be more acceptable to patients and caregivers.
背景
联合机械-药理学方案是预防全髋关节和全膝关节置换术后症状性静脉血栓栓塞的公认治疗方法。足部泵已被认为是有效的机械装置。研究表明，预防静脉血栓栓塞的药物治疗与并发症有关，而足部泵提供了一种辅助或替代方法。据推测，足部泵的有效性与增强静脉血流有关。
问题/目的：我们比较了一种已建立的足部泵系统和一种新的移动足部泵，以评估它们对股总静脉、膕静脉和胫后静脉的平均峰值静脉速度的影响。
方法
我们评估了 60 名健康受试者，使用已建立的和新的足部泵系统。超声检查用于测量机械压缩下的基线和峰值静脉速度。我们构建了两个设备之间平均差异的 95%置信区间（CI），以建立等效极限。我们比较了峰值速度与休息速度的比值。受试者对两种足部泵的大小、贴合度和舒适度进行了主观评价。
结果
两个设备之间平均差异的 95%CI 检验结果不确定。新型设备在胫后静脉中使静脉速度增加了 11 倍，比休息时增加了 3 倍，在膕静脉中使静脉速度增加了 3 倍，比休息时增加了 1 倍。已建立的足部泵在胫后静脉中使静脉速度增加了 15 倍，比休息时增加了 4 倍，在膕静脉中使静脉速度增加了 4 倍。与已建立的设备相比，新型设备在大小、贴合度和舒适度方面的评价更好。
结论
已建立的足部泵往往与更大的峰值速度相关；新型设备产生了更一致的平均峰值静脉速度，可能更受患者和护理人员的欢迎。
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