Objective To investigate the value of detrusor isovolumetric test(DIT)on female SUI with sus-pected detrusor contraction weakness. Methods A total of 86 SUI patients with suspected detrusor contraction weakness diagnosed by preoperative bladder cystometry(CMG)were enrolled in this study.DIT method was used to evaluate the bladder function. The difference of first sensation cystometry capacity, maximum cystometric capacity, bladder compliance and maximum detrusor pressure were compared between the two methods.Patients in group Ⅰwhowere diagnosed with normal detrusor function with DIT method underwent TOT surgery. Ninety normal SUI patients were selected as control group Ⅱ,who were diagnosed with normal detrusor function with CMG method. The surgery effect was compared between the two groups. Results By using DIT detection,there were 65 cases showed normal detrusor function of the 86 cases(75.6%).The maximum detrusor pressure with DIT was(31.2 ± 12.9)cm H2O versus(11.7 ± 3.1)cm H2O with cystometry(P＜0.05).No significant differences were observed in the first sensation cystometry capacity,maximum cystometric capacity and bladder compliance.The effective rate of TOT in both group Ⅰ and group Ⅱ was more than 95%,with no significantly difference between the two groups (P＞0.05). Conclusions DIT is a valuable method to evaluate the bladder function of female SUI patients with suspected detrusor contraction weakness.%目的 探讨术前逼尿肌等容收缩实验(DIT)评估压力性尿失禁(SUI)伴可疑逼尿肌收缩乏力患者膀胱功能的效果.方法 选取术前膀胱压力-容积测定(CMG)为逼尿肌收缩乏力的86例SUI患者为研究对象,复行DIT评估逼尿肌功能,比较两种方法下初始膀胱感觉容量、最大膀胱容量、膀胱壁顺应性、排尿期最大逼尿肌压力等尿动力学参数.复行DIT诊断为逼尿肌功能正常者(Ⅰ组)行TOT手术治疗,并选取90 例同期CMG 诊断为逼尿肌功能正常SUI 患者为对照组(Ⅱ组),观察两组手术效果.结果 86例可疑逼尿肌收缩乏力SUI患者复行DIT检测65例示逼尿肌功能正常(75.6%),DIT方法评估排尿期最大逼尿肌压力结果(31.2 ± 12.9)cmH2O,较CMG 结果(11.7 ± 3.1)cmH2O 显著升高(P < 0.05).初始膀胱感觉容量、最大膀胱容量和膀胱壁顺应性较CMG结果无明显变化(均P > 0.05).Ⅰ组和Ⅱ组患者TOT术后有效率均> 95%,手术疗效不存在统计学差异(P > 0.05).结论 DIT 对评估伴可疑逼尿肌收缩乏力SUI 患者的膀胱逼尿肌功能有重要价值.
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