Maximum Voided Volume Is a Better Clinical Parameter for Bladder Capacity Than Maximum Cystometric Capacity in Patients With Lower Urinary Tract Symptoms/Benign Prostatic Hyperplasia: A Prospective Cohort Study.

IF 1.8 3区医学 Q3 UROLOGY & NEPHROLOGY International Neurourology Journal Pub Date : 2022-12-01 DOI:10.5213/inj.2244158.079

Min Hyuk Kim, Jungyo Suh, Hyoun-Joong Kong, Seung-June Oh

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Abstract

Purpose: Bladder capacity is an important parameter in the diagnosis of lower urinary tract dysfunction. We aimed to determine whether the maximum bladder capacity (MCC) measured during a urodynamic study was affected by involuntary detrusor contraction (IDC) in patients with Lower Urinary Tract Symptoms (LUTS)/Benign Prostatic Hyperplasia (BPH).

Methods: Between March 2020 and April 2021, we obtained maximum voided volume (MVV) from a 3-day frequency-volume chart, MCC during filling cystometry, and maximum anesthetic bladder capacity (MABC) during holmium laser enucleation of the prostate under spinal or general anesthesia in 139 men with LUTS/BPH aged >50 years. Patients were divided according to the presence of IDC during filling cystometry. We assumed that the MABC is close to the true value of the MCC, as it is measured under the condition of minimizing neural influence over the bladder.

Results: There was no difference in demographic and clinical characteristics between the non-IDC (n=20) and IDC groups (n=119) (mean age, 71.5±7.4) (P>0.05). The non-IDC group had greater bladder volume to feel the first sensation, first desire, and strong desire than the IDC group (P<0.001). In all patients, MABC and MVV were correlated (r=0.41, P<0.001); however, there was no correlation between MCC and MABC (r=0.19, P=0.02). There was no significant difference in MABC between the non-IDC and IDC groups (P=0.19), but MVV and MCC were significantly greater in the non-IDC group (P<0.001). There was no significant difference between MABC and MVV (MABC-MVV, P=0.54; MVV/MABC, P=0.07), but there was a significant difference between MABC and MCC between the non-IDC and IDC groups (MABC-MCC, P<0.001; MCC/MABC, P<0.001).

Conclusion: Maximum bladder capacity from a urodynamic study does not represent true bladder capacity because of involuntary contractions.

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下尿路症状/良性前列腺增生患者的最大排尿容积比最大膀胱容量更能反映膀胱容量:一项前瞻性队列研究

目的:膀胱容量是诊断下尿路功能障碍的重要指标。我们的目的是确定在尿动力学研究中测量的最大膀胱容量(MCC)是否受到下尿路症状(LUTS)/良性前列腺增生(BPH)患者的不自主逼尿肌收缩(IDC)的影响。方法:在2020年3月至2021年4月期间，我们通过为期3天的频率-体积图获得了139名年龄>50岁的LUTS/BPH男性患者在脊髓或全身麻醉下进行钬激光前列腺摘除术时的最大空体积(MVV)、填充膀胱术时的MCC和最大麻醉膀胱容量(MABC)。根据充盈膀胱术中有无IDC进行分组。我们假设MABC接近MCC的真实值，因为它是在最小化神经对膀胱的影响的条件下测量的。结果:非IDC组(n=20)与IDC组(n=119)的人口学及临床特征(平均年龄71.5±7.4)无统计学差异(P>0.05)。非IDC组比IDC组有更大的膀胱容量来感受第一感觉、第一欲望和强烈的欲望(结论:尿动力学研究的最大膀胱容量不能代表真正的膀胱容量，因为不自主收缩。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Neurourology Journal UROLOGY & NEPHROLOGY-

CiteScore

4.40

自引率

21.70%

发文量

审稿时长

4 weeks

期刊介绍： The International Neurourology Journal (Int Neurourol J, INJ) is a quarterly international journal that publishes high-quality research papers that provide the most significant and promising achievements in the fields of clinical neurourology and fundamental science. Specifically, fundamental science includes the most influential research papers from all fields of science and technology, revolutionizing what physicians and researchers practicing the art of neurourology worldwide know. Thus, we welcome valuable basic research articles to introduce cutting-edge translational research of fundamental sciences to clinical neurourology. In the editorials, urologists will present their perspectives on these articles. The original mission statement of the INJ was published on October 12, 1997. INJ provides authors a fast review of their work and makes a decision in an average of three to four weeks of receiving submissions. If accepted, articles are posted online in fully citable form. Supplementary issues will be published interim to quarterlies, as necessary, to fully allow berth to accept and publish relevant articles.