Corica A P, Larson B T, Sagaz A, Corica A G, Larson T R
Department of Urology, Universidad Nacional de Cuyo, Mendoza, Argentina.
BJU Int. 2004 Feb;93(3):346-8. doi: 10.1111/j.1464-410x.2003.04613.x.
To determine the effect of a novel temporary prostatic stent (The Spanner, AbbeyMoor Medical, Inc., Minnesota, USA) on variables of voiding function and quality of life among patients with prostatic urethral obstruction.
The stent design is very similar to the proximal 4-6 cm of a Foley catheter; this includes a proximal balloon to prevent distal displacement, a urine port situated cephalad to the balloon, and a reinforced stent of various lengths to span most of the prostatic urethra. There is also a distal anchor mechanism attached by sutures, and a retrieval suture which extends to the meatus and deflates the proximal balloon when pulled. The stent was inserted under topical anaesthesia in 30 patients. The maximum flow rate (Qmax), voided volume (W), postvoid residual (PVR), the International Prostate Symptom Score (IPSS) and stent position were assessed.
Stents remained in situ for a mean (range) of 57 (1-98) days. The mean overall Qmax at baseline and after insertion were 8.2 and 11.6 mL/s, representing a 42% improvement (P < 0.001); the respective mean overall Ws were similar, at 219.7 and 221.6 mL (0.9% increase, not significant) and the PVRs were 312.1 and 112.3 mL, representing a 64% decrease (P = 0.004). The overall mean IPSS declined from 22.3 before to 7.1 after insertion, representing a 68% decrease (P < 0.001). There were only minor adverse events. The stability, patency and lack of migration of the device were confirmed radiographically up to 12 weeks of use.
This early study shows that this temporary prostatic stent is easily inserted and removed, remains anchored in position, and significantly improves the Qmax, PVR and IPSS while preserving volitional voiding and continence.
确定一种新型临时性前列腺支架（The Spanner，美国明尼苏达州阿比莫尔医疗公司）对前列腺尿道梗阻患者排尿功能变量及生活质量的影响。
该支架设计与Foley导尿管近端4 - 6厘米非常相似；包括一个近端球囊以防止远端移位、一个位于球囊上方的尿液端口，以及各种长度的加强型支架以跨越大部分前列腺尿道。还有一个通过缝线连接的远端锚定机制，以及一根延伸至尿道口的取出缝线，拉动时可使近端球囊放气。30例患者在局部麻醉下插入该支架。评估最大尿流率（Qmax）、排尿量（W）、残余尿量（PVR）、国际前列腺症状评分（IPSS）及支架位置。
支架平均（范围）在位57（1 - 98）天。基线时和插入后的平均总体Qmax分别为8.2和11.6毫升/秒，改善了42%（P < 0.001）；各自的平均总体排尿量相似，分别为219.7和221.6毫升（增加0.9%，无统计学意义），PVR分别为312.1和112.3毫升，减少了64%（P = 0.004）。总体平均IPSS从插入前的22.3降至插入后的7.1，减少了68%（P < 0.001）。仅有轻微不良事件。在使用长达12周时通过影像学检查确认了该装置的稳定性、通畅性及未发生移位。
这项早期研究表明，这种临时性前列腺支架易于插入和取出，能保持固定在位，显著改善Qmax、PVR和IPSS，同时保留自主排尿和控尿功能。
