Department of Urology, University College London Hospital, 16-18 Westmoreland Street, London, W1G 8PH, UK.
World J Urol. 2021 May;39(5):1591-1595. doi: 10.1007/s00345-020-03343-4. Epub 2020 Jul 11.
To establish the correlation between flow rate curve shape and video-urodynamic findings in women with lower urinary tract symptoms (LUTS).
A retrospective review of consecutive women with LUTS who performed a free flow study immediately before undergoing video-urodynamic investigations over a 28-month period. Flow rate curve shape and video-urodynamic parameters were analysed. Free flow curves were defined into five categories: bell-shaped, prolonged, fluctuating, intermittent or plateau. Women who voided less than 150 ml on the free flow study were excluded from the analysis.
A total of 250 women with LUTS, with a mean age 48 years (range 18-83), were included. Bell-shaped tracings excluded obstruction in 89%. Prolonged flow rate curves diagnosed obstruction in 62% and detrusor underactivity in 8%. Fluctuating and intermittent flow rate curves were associated with urodynamic obstruction in 37 and 39%, respectively, and detrusor underactivity in 25 and 29%, respectively. A plateau flow rate curve was indicative of urodynamic obstruction in all three cases observed.
Flow rate curve patterns can be suggestive of urodynamic diagnoses. Women without a prolonged void and bell-shaped traces had normal voiding urodynamics in 76% of cases, and the majority could be managed without invasive investigations. Patients with fluctuating and intermittent flow rate curves demonstrate a spectrum of urodynamic diagnoses with a third of cases having obstruction and a third of cases having detrusor underactivity. Plateau flow rate curve patterns are associated with urethral obstruction.
确定下尿路症状（LUTS）女性的流量率曲线形状与视频尿动力学检查结果之间的相关性。
对在 28 个月期间行自由流研究后立即接受视频尿动力学检查的连续 LUTS 女性进行回顾性分析。分析流量率曲线形状和视频尿动力学参数。将自由流曲线定义为 5 种类型：钟形、延长型、波动型、间歇性或平台型。排除在自由流动研究中排尿量少于 150ml 的女性进行分析。
共纳入 250 例 LUTS 女性，平均年龄 48 岁（范围 18-83 岁）。钟形描记排除梗阻 89%。延长型流量曲线诊断梗阻 62%，逼尿肌活动低下 8%。波动型和间歇性流量曲线与尿动力学梗阻分别相关 37%和 39%，与逼尿肌活动低下分别相关 25%和 29%。观察到的三种情况下，平台型流量曲线均提示尿动力学梗阻。无延长排空和钟形痕迹的女性，76%的排尿尿动力学正常，大多数无需进行侵入性检查即可得到管理。波动型和间歇性流量曲线的患者表现出尿动力学诊断的一系列情况，其中三分之一有梗阻，三分之一有逼尿肌活动低下。平台型流量曲线模式与尿道梗阻相关。
