Impact of urethral catheterization on uroflow during pressure-flow study

Zhu, Bi Song; Jiang, Hui Chuan; Li, Yuan

doi:10.1177/0300060516657700

Cited by 6 publications

(5 citation statements)

References 13 publications

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“…Catheter caliber has been demonstrated to influence Valsalva LPP since measurements with 8Fr catheters resulted in significantly greater LPP than measurements using 3Fr catheters 17 . The effects of urethral catheter presence was also studied in uroflow studies 18 , 19 . In female patients suffering from SUI, flow rate was reduced when using a transurethral catheter, compared to free uroflowmetry 18 .…”

Section: Discussionmentioning

confidence: 99%

“…The effects of urethral catheter presence was also studied in uroflow studies 18 , 19 . In female patients suffering from SUI, flow rate was reduced when using a transurethral catheter, compared to free uroflowmetry 18 . It has been suggested that this could be due to incomplete sphincter relaxation during voiding with the presence of a transurethral catheter 19 , which may relate to the significantly reduced EUS EMG amplitude if a transurethral catheter was used initially.…”

Section: Discussionmentioning

confidence: 99%

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Transurethral versus suprapubic catheterization to test urethral function in rats

Janssen

Deng

Majerus

et al. 2021

Sci Rep

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Transurethral and suprapubic catheterization have both been used to test urethral function in rats; however, it is unknown whether these methods affect urethral function or if the order of catheterization affects the results. The aim of this cross-over designed experiment was to compare the effects of catheterization methods and order on leak point pressure (LPP) testing. LPP and simultaneous external urethral sphincter electromyography (EUS EMG) were recorded in anesthetized female virgin Sprague-Dawley rats in a cross-over design to test the effects of transurethral and suprapubic catheterization. There was no significant difference in peak bladder pressure during LPP testing whether measured with a transurethral or suprapubic catheter. There was no significant difference in peak bladder pressure between the first and second catheter insertions. However, peak EMG firing rate, as well as peak EMG amplitude and EMG amplitude difference between peak and baseline were significantly higher after the first catheter insertion compared to the second insertion, regardless of the catheter method. Our results suggest that route of catheterization does not alter urethral function, e.g. create a functional partial outlet obstruction. Either catheterization method could be used for LPP and/or EUS EMG testing in rats.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Transurethral versus suprapubic catheterization to test urethral function in rats

Janssen

Deng

Majerus

et al. 2021

Sci Rep

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“…Besides the stress of being examined, the presence of urethral catheters has been broadly reported to influence the values of maximum flow rate during pressure‐flow study (PFS) 4 . This observation has been confirmed in female population 5,6 and in a myriad of clinical conditions 7 . The size of the catheter seems to be one of the factors explaining this phenomenon but not the only one 8,9 .…”

Section: Introductionmentioning

confidence: 97%

“…4 This observation has been confirmed in female population 5,6 and in a myriad of clinical conditions. 7 The size of the catheter seems to be one of the factors explaining this phenomenon but not the only one. 8,9 Furthermore, the alterations induced by the catheters have been proposed to be capable of leading to a misdiagnosis of BOO or DU.…”

Section: Introductionmentioning

confidence: 99%

Defining bladder outlet obstruction and detrusor underactivity in females with overactive bladder: Are we forgetting about the free uroflowmetry?

Arévalo-Vega

Ponce

Valdevenito

et al. 2023

Neurourology and Urodynamics

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Introduction: Both detrusor underactivity (DU) and bladder outlet obstruction (BOO) can coexist in patients with overactive bladder. Definitions of both DU and BOO are based on pressure-flow study (PFS) data. However, invasive urodynamics study can differ from a natural micturition, in fact, discrepancies between free uroflowmetry (UFM) and PFS have been largely described. Our goal is to assess the correlation of free-flowmetry and PFS among patients with OAB and to evaluate how different definitions of DU/BOO are able to discriminate patients with different free UFMs. Methods: A retrospective review of urodynamics performed at a single institution was conducted. Females with OAB who voided more than 150 mL in both UFM and PFS were included. Parameters from both voiding episodes were compared with nonparametric test. Two definitions of DU were applied; PIP1: Pdet@Qmax+Qmax < 30 and Gammie: Pdet@Qmax < 20 cmH 2 O, Qmax < 15 mL/s, and BVE < 90% (Bladder voiding efficiency). Also, two definitions of obstruction were chosen; Defretias: Pdet@Qmax ≥25 cmH 2 O and Qmax ≤ 12 mL/s and Solomon-Greenwell female BOO index ≥ 18.Patients who matched with each definition were compared to those who did not, to assess if any definitions were able to discriminate different noninvasive uroflowmetries.Results: A total of 195 patients were included. Overall, mean age was 55 ± 12 years, 90.8% had mixed urinary incontinence, and 39% complained of at least one voiding symptom. Globally, Qmax and BVE correlated poorly between UFM and PFS, showing that most of the variation corresponded to a systematic error. Twenty-two individuals were found to have DU, they had a difference of 13 mL/s on both maximum flows. Fifty-four patients showed BOO, with a difference between their Qmax of 19 mL/s. Among the four definitions analyzed, only PIP1 and Defreitas were able to discriminate patients with actually a lower Qmax on the free UFM.

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“…Benign prostatic hyperplasia (BPH), as the most common disease in male urological pathology [1], represents a serious public health problem in our contemporary society. Although it is benign, this disease has been shown to have a negative impact on the patient’s health-related quality of life (HRQL), marked by obstructive and irritative lower urinary tract symptoms (LUTS) [2, 3]. Despite continuing development of new minimally invasive surgical methods, transurethral resection of the prostate (TURP) still remains the gold standard surgical treatment for LUTS due to BPH [4, 5], with more than 90% of the patients reporting normal or improved urinary voiding over the 10-year follow-up period.…”

Section: Introductionmentioning

confidence: 99%

Transurethral resection of the prostate with preservation of the bladder neck decreases postoperative retrograde ejaculation.

Lü

Zhang

Chen

et al. 2018

Videosurgery and Other Miniinvasive Techniques

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IntroductionEven though transurethral resection of the prostate (TURP) is the standard surgical treatment for benign prostatic hyperplasia (BPH), there is a high rate of postoperative retrograde ejaculation.AimTo evaluate the effectiveness of TURP with preservation of the bladder neck in comparison with that of standard TURP.Material and methodsThis is a retrospective study. 137 men with BPH were divided into two groups: TURP with preservation of the bladder neck and standard TURP were performed respectively in group A and group B. The patients were evaluated preoperatively and at 3, 6 and 12 months after surgery by International Prostate Symptom Score (IPSS), health-related quality of life (HRQL) score, maximum urinary flow rate (Qmax), postvoid residual urine volume (PVR) and the rate of complications including retrograde ejaculation.ResultsThere was no statistically significant difference between groups in terms of the operative duration, catheterization period, hemoglobin decrease, and hospital stay. At the 3-month follow-up, the rates of incontinence and retrograde ejaculation in group A were lower than those in group B. At the 6- and 12-month follow-ups, the difference in the frequency of retrograde ejaculation remained constantly stable whereas the incontinence rates were similar in both groups. The IPSS, HRQL score, Qmax, PVR and the rate of complications including hematuria, clot retention, urinary tract infection, urethral stricture, and bladder neck contracture evaluated at 3, 6 and 12 months also displayed a very similar response in the two groups.ConclusionsComparable with standard TURP, TURP with preservation of the bladder neck appears to provide a satisfactory clinical outcome in decreasing early postoperative incontinence and lowering the rate of retrograde ejaculation.

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Impact of urethral catheterization on uroflow during pressure-flow study

Cited by 6 publications

References 13 publications

Transurethral versus suprapubic catheterization to test urethral function in rats

Transurethral versus suprapubic catheterization to test urethral function in rats

Defining bladder outlet obstruction and detrusor underactivity in females with overactive bladder: Are we forgetting about the free uroflowmetry?

Transurethral resection of the prostate with preservation of the bladder neck decreases postoperative retrograde ejaculation.

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