Clinical efficacy and urodynamic predictors of successful treatment outcomes following urethral sphincter botulinum toxin A injection in women with non-spinal cord neurogenic voiding dysfunction.

International urology and nephrology 2026 Vol.58(3) p. 827-834

Chen SF, Kuo HC

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Abstract

[PURPOSE] Neurogenic voiding dysfunction caused by neurological diseases is frequently encountered in clinical practice. This study aimed to evaluate the clinical efficacy and identify urodynamic predictors of a successful outcome following urethral sphincter botulinum toxin A (BoNT-A) injection in women with this condition.

[METHODS] This is a retrospective cohort study. Women diagnosed with non-spinal cord neurogenic voiding dysfunction who presented with difficulty voiding and significant post-void residual (PVR) urine volume received 100 units of BoNT-A via urethral sphincter injection. The primary outcome was assessed 3 months posttreatment. Treatment success was defined as improved voiding function with voiding efficiency (VE) > 67% and elimination of catheterization. Patients not meeting these criteria were classified as treatment failures. Baseline videourodynamic parameters were analyzed to identify differences between successful and unsuccessful treatment groups. Multivariate logistic regression was employed to determine independent predictors of treatment success.

[RESULTS] A total of 158 women were enrolled, including 35 with cerebrovascular disease, 22 with Parkinson's disease, 10 with dementia, and 91 with peripheral nervous system disorders. Among them, only 28.5% achieved a successful outcome, while 40.5% showed partial improvement but continued to experience high PVR and required catheterization. Women in the success group exhibited significantly higher baseline voiding pressures, maximum flow rates, and VE, along with lower PVR volumes, compared with those in the failure group. Urethral sphincter discoordination was associated with higher success rates, whereas detrusor underactivity, tight bladder neck, and poor external sphincter relaxation were linked to poorer outcomes.

[CONCLUSION] Higher baseline voiding pressure and lower PVR were predictive of successful response to urethral sphincter BoNT-A injection in women with non-spinal cord neurogenic voiding dysfunction. The result highlights that a woman with true urethral sphincter dysfunction could benefit from urethral BoNT-A injection. Proper patient selection based on urodynamic parameters may optimize therapeutic outcomes.

추출된 의학 개체 (NER)

유형영어 표현한국어 / 풀이UMLS CUI출처등장
시술 botulinum toxin 보툴리눔독소 주사 dict 2
해부 cord scispacy 1
해부 detrusor scispacy 1
해부 urethral BoNT-A scispacy 1
합병증 urethral sphincter scispacy 1
합병증 peripheral nervous system scispacy 1
합병증 bladder neck scispacy 1
합병증 urethral sphincter BoNT-A scispacy 1
약물 [RESULTS] A scispacy 1
질환 cord neurogenic voiding dysfunction scispacy 1
질환 Neurogenic voiding dysfunction scispacy 1
질환 neurological diseases C0027765
nervous system disorder
scispacy 1
질환 cerebrovascular disease C0007820
Cerebrovascular Disorders
scispacy 1
질환 Parkinson's disease C0030567
Parkinson Disease
scispacy 1
질환 dementia C0011265
Presenile dementia
scispacy 1
질환 peripheral nervous system disorders C4721453
Peripheral Nervous System Diseases
scispacy 1
질환 Urethral sphincter discoordination scispacy 1
질환 poor external sphincter relaxation scispacy 1
질환 urethral sphincter dysfunction scispacy 1
기타 women scispacy 1
기타 BoNT-A → botulinum toxin A scispacy 1
기타 Patients scispacy 1
기타 cerebrovascular scispacy 1
기타 patient scispacy 1

MeSH Terms

Humans; Female; Botulinum Toxins, Type A; Retrospective Studies; Urodynamics; Middle Aged; Treatment Outcome; Urethra; Aged; Adult; Neuromuscular Agents; Urinary Bladder, Neurogenic; Urination Disorders; Injections

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