原位M形回肠代膀胱术42例报告

M-shaped orthotopic ileal neobladder (report of 42 cases)

目的 评价原位M形回肠代膀胱的疗效。 方法 男性膀胱恶性肿瘤患者 4 2例 ,腹膜外切除膀胱前列腺 ,截取 4 5～ 5 0cm回肠纵行剖开后M形折叠形成贮尿囊 ,输尿管插入贮尿囊内 1cm作吻合 ,贮尿囊底部与尿道 6针吻合 ,将贮尿囊完全置于腹膜外。 结果 本组 4 2例 ,术后随访12～ 96个月 ,平均 4 4个月。白天控尿良好者 38例 (90 .5 % ) ,夜间控尿良好者 36例 (85 .7% )。术后 12个月代膀胱容量 (36 1± 4 8)ml,最大排尿压 (86 .8± 2 1.4 )cmH2 O(1cmH2 O =0 .0 98kPa) ,最大尿流率(18.4± 6 .1)ml/s,无明显输尿管梗阻及返流。未发现尿道残端复发肿瘤。 结论 腹膜外切除膀胱可减少腹腔被肿瘤污染 ,避免肠管进入盆腔而影响手术操作。插入式输尿管吻合法 ,操作简单 ,术后形成小乳头有良好的抗返流作用 ,输尿管狭窄发生率低。代膀胱置于腹膜外 ,可减少肠粘连、肠梗阻、输尿管梗阻、腹腔内感染等并发症。改良后的原位回肠代膀胱术式 ,具有手术操作简单、术后并发症少、功能良好的特点 ,代膀胱在位置、形态、容量及输尿管抗返流等方面均接近正常膀胱。

Objective To evaluate the outcomes of M-shaped orthotopic ileal neobladder. Methods A total of 42 male patients with malignant bladder tumors underwent M-shaped orthotopic ileal neobladder after extraperitoneal total cystoprostatectomy.A segment of 45 to 50cm ileal loop was isolated,detubularized,and reconfigured in “M”- shape to form a pouch.Bilateral ureters were reimplanted by means of inserting the 1 cm distal segment into the pouch.The bottom of pouch was opened and anastomosed with the urethra. Results The 42 patients were followed up for 12 to 96 months with a mean of 44 months.38 cases(90.5%) were well continent during daytime,and 36 cases(85.7%) were continent at night.The volume of the pouch was (361±48)ml at 12 months postoperatively. Urodynamic examination showed that the peak voiding pressure was (86.8±21.4)cm H 2O(1 cm H 2O=0.098 kPa).The maximum flow rate (Q max ) was(18.4±6.1)ml/s.No remarkable ureter reflux and obstruction were found.No patient was detected to develop recurrent urethral carcinoma. Conclusions Extraperitoneal cystectomy can prevent the abdomen from tumor contamination and protect the operative field from intestine interference.The ureter-inserting reimplantation technique is a simple anti-reflux anastomosis with lower rate of ureteral stenosis.Isolating the neobladder and ureters from the peritoneal cavity can reduce the postoperative complications of adhesive ileus,internal hernia,and urine leakage to peritoneal cavity.The neobladder is similar to original bladder in position,volume,shape,and anti-reflux of ureter connection.