The Reproducibility Of Urodynamic Studies Of Neurogenic Bladders In Spinal Cord Injury

Abstract

Objective: To evaluate the reproducibility (test-retest reliability) of urodynamic studies in neurogenic bladders of subjects with spinal cord injuries (SCI).

Design: Retrospective case series.

Setting: Urology department of a major rehabilitation center.

Subjects: Fifty individuals with SCI who had urodynamic studies performed from February 2000 to April 2000.

Main outcome measures: Two trials (Time 1 and Time 2) of urodynamic studies done 5 minutes apart, with the following collected: bladder volume at first sensation, maximum cystometric capacity, presence of uninhib ited contractions, opening pressure, maximum detrusor pressure, duration of bladder contraction, volume voided, and post-void residual (PVR) volume. The corresponding data were then compared. Statistical analysis was performed using the Lin’s concordance correlation coefficient and kappa.

Results: Analysis of the data showed statistically significant levels of agreement between Time 1 and Time 2 with regard to the various corresponding parameters for both the filling and voiding phases. For 3 of the most important parameters-the opening pressure, maximum detrusor pressure, and duration of contraction-the Lin’s concordance correlation coefficient (r_c) was .86 (95% Cl, .78-.95; ρ < .0005), .91 (95% Cl, .86-.96; ρ < .0005), and .97 (95% Cl, .95 -.99, ρ < .0005), respectively.

Conclusion: The study demonstrates good short-term intrasubject reproducibility of urodynamic studies in individuals with SCI.     

Prophylactic Radical Cystectomy for the Management of Keratinizing Squamous Metaplasia of the Bladder in a Man With Tetraplegia

Abstract

Background/Objective: To report a case of keratinizing squamous metaplasia of the bladder treated with radical cystectomy.

Design: Case report and discussion of management options.

Methods: Keratinizing squamous metaplasia of the bladder is a rare entity that can result from chronic irritative stimuli involving the bladder. It is considered a premalignant condition associated with invasive squamous cell carcinoma. A case report is presented describing the diagnosis and management of keratinizing squamous metaplasia of the bladder in a tetraplegic man with a chronic indwelling urinary catheter.

Results: Radical cystectomy with an Indiana continent reservoir was performed after cystoscopy with biopsy confirmed keratinizing squamous metaplasia. Final pathology revealed focal erosion and diffuse keratinizing squamous metaplasia of the bladder with prostatic adenocarcinoma as an incidental finding.

Conclusions: Patients with spinal cord injury who use indwelling catheters for bladder management are at higher risk of developing keratinizing squamous metaplasia. Surveillance for early detection of this entity is recommended. Prophylactic cystectomy is sometimes warranted; however, observation and frequent cystoscopic surveillance to identify potential malignant transformation can be an alternative strategy. An interdisciplinary approach is recommended before consideration of bladder resection.     

Evaluation of 3 Methods of Bladder Irrigation to Treat Bacteriuria in Persons With Neurogenic Bladder

Abstract

Background/Objective: We conducted a randomized, double-blind comparison of twice daily bladder irrigation using 1 of 3 different solutions in community-residing persons with neurogenic bladder who used indwelling catheters to evaluate efficacy in treatment of bacteriuria.

Methods: Eighty-nine persons with bacteriuria were randomized to irrigate their bladders twice daily for 8 weeks with 30 mL of (a) sterile saline, (b) acetic acid, or (c) neomycin-polymyxin solution. Urinalysis, cultures, and antimicrobial susceptibility tests were performed at baseline and weeks 2, 4, and 8 to determine the extent to which each of the solutions affected numbers and types of bacteria, urinary pH, urinary leukocytes, and generation of antimicrobial-resistant organisms.

Results: Bladder irrigation was well tolerated with the exception of 3 participants who had bladder spasms. None of the 3 irrigants had a detectable effect on the degree of bacteriuria or pyuria in 52 persons who completed the study protocol. A significant increase in urinary pH occurred in all 3 groups. No significant development of resistance to oral antimicrobials beyond what was observed at baseline was detected.

Conclusions: Bladder irrigation was generally well tolerated for 8 weeks. No advantages were detected for neomycin-polymyxin or acetic acid over saline in terms of reducing the urinary bacterial load and inflammation. We cannot recommend bladder irrigation as a means of treatment for bacteriuria in persons with neurogenic bladder.     

全程管理在神经源性膀胱患者骶神经调节治疗的疗效评价

目的评价基于多学科团队协作的骶神经调节治疗神经源性膀胱患者全程管理方案的实践效果。 方法收集2018年1月至2019年12月中山大学孙逸仙纪念医院收治的36例神经源性膀胱行骶神经调节治疗患者的病例资料。将36例患者按入院时间分为对照组15例（2018年1~ 12月）和干预组21例（2019年1~12月）。对照组给予常规管理,干预组实施全程护理模式。比较两组骶神经调节二期手术转化率,两组患者一期术后3个月时膀胱功能管理效果、尿路感染发生率、患者满意度和生活质量的差异。 结果两组患者在骶神经调节二期手术转化率、平衡膀胱达标率、膀胱容量、患者满意度和生活质量的差异有统计学意义（P<0.05）,干预组均高于对照组。 结论多学科团队协作的全程管理实现了骶神经调节治疗神经源性膀胱患者连续的全程化、个性化管理,协调多学科团队协作,改善了患者的临床疗效,提高了患者满意度,是一种有效的患者管理照护模式。