Continuous non‐invasive measurement of bladder voiding pressure using an experimental constant low‐flow test

Clarkson, Becky; Griffiths, Clive; McArdle, Francis; Pickard, Robert; Drinnan, Michael

doi:10.1002/nau.21170

Cited by 5 publications

(8 citation statements)

References 11 publications

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“…Recently, a new prototype of PCT has been proposed [ 8 ], using an automatically controlled inflatable cuff which detects bladder voiding pressure at constant low urine flow instead of inflation-deflation cycles.…”

Section: Introductionmentioning

confidence: 99%

Correlation between penile cuff test and pressure-flow study in patients candidates for trans-urethral resection of prostate

et al. 2014

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BackgroundAim of this study was to make a comparison between penile cuff test (PCT) and standard pressure-flow study (PFS) in the preoperative evaluation of patients candidates for trans-urethral resection of prostate (TURP) for benign prostatic obstruction (BPO).MethodsWe enrolled male patients with lower urinary tract symptoms candidates for TURP. Each of them underwent a PCT and a subsequent PFS. A statistical analysis was performed: sensitivity (SE), specificity (SP), positive predictive value (PPV), negative predictive value (NPV), likelihood ratio and ratio of corrected classified were calculated. Fisher exact test was used to evaluate relationships between PCT and maximal urine flow (Qmax): a p-value < 0.05 was considered statistically significant.ResultsWe enrolled 48 consecutive patients. Overall, at PCT 31 patients were diagnosed as obstructed and 17 patients as unobstructed. At the subsequent PFS, 21 out of 31 patients diagnosed as obstructed at PCT were confirmed to be obstructed; one was diagnosed as unobstructed; the remaining 9 patients appeared as equivocal. Concerning the 17 patients unobstructed at PCT, all of them were confirmed not to be obstructed at PFS, with 10 equivocal and 7 unobstructed. The rate of correctly classified patients at PCT was 79% (95%-CI 65%-90%). About detecting obstructed patients, PCT showed a SE of 100% and a SP of 63%. The PPV was 68%, while the NPV was 100%.ConclusionsPCT can be an efficient tool in evaluating patients candidates for TURP. In particular, it showed good reliability in ruling out BPO because of its high NPV, with a high rate of correctly classified patients overall. Further studies on a huger number of patients are needed, including post-operative follow-up as well.

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Section: Introductionmentioning

confidence: 99%

Correlation between penile cuff test and pressure-flow study in patients candidates for trans-urethral resection of prostate

et al. 2014

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“…Using the different definitions, the ranges for sensitivities, specificities, PPVs, and NPVs were 64%‐100%, 63%‐100%, 54%‐100%, and 61%‐100%, respectively. In the two studies (studies 1 and 9) 12,20 evaluating differences between the penile cuff pressure and isovolumetric bladder pressure, the mean differences were found to be 14.5 ± 10 cm H 2 O and 1.3 ± 15.6 cm H 2 O.…”

Section: Resultsmentioning

confidence: 92%

“…Studies 1‐17 12‐28 were conducted from 2002 to 2020 (Table 1). The individual study sample sizes ranged from 19 to 179 men, with ages ranging from 20 to 89 years.…”

Section: Resultsmentioning

confidence: 99%

“…Based on the GRADE criteria, which factors in various characteristics including publication bias, quality ratings of low (studies 2 and 8), 13,19 moderate (studies 1, 3, 6, 7, 9, and 17), 12,14,17,18,20,28 and high (studies 4, 5, and 10‐16) 15,16,21‐27 are given (Table S1). Funnel plots were further used to assess publication bias for the studies included in the meta‐analysis (Figure 3).…”

Section: Resultsmentioning

confidence: 99%

“…Since PCT is commonly being used, there exists a strong need to determine optimal cutoffs or nomogram in confirming BOO. Nevertheless, small differences were seen between the penile cuff pressure and PFS isovolumetric bladder pressures, 12,20 demonstrating the potential of PCT being used as a strong clinical tool for assessment. Regarding other noninvasive modalities for assessing BOO (transabdominal ultrasound, Doppler ultrasound, near‐infrared spectroscopy, etc.…”

Section: Discussionmentioning

confidence: 99%

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Use of the penile cuff test to diagnose bladder outlet obstruction: A systematic review and meta‐analysis

Khosla

Codelia-Anjum

Sze

et al. 2022

LUTS

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Purpose Among noninvasive modalities for assessing bladder outlet obstruction (BOO), the penile cuff test (PCT) is the most used in clinical practice. The purpose of this review was to evaluate the performance of PCT in diagnosing and managing BOO. Materials and Methods PubMed, Scopus, CINAHL, Embase, Cochrane Library, and Web of Science were searched for studies investigating use of PCT for BOO. Studies evaluating diagnostic parameters, inter‐observer agreements, or treatment outcomes using PCT were included. The Preferred Reporting Items for Systematic Reviews and Meta‐Analyses protocol was followed (PROSPERO ID: CRD42022300047). A proportional meta‐analysis was done for diagnostic accuracy proportions. The Egger's and the Begg‐Mazumdar rank‐correlation tests were used to assess publication bias. Risk of bias was assessed using the Gradings of Recommendations, Assessment, Development, and Evaluations (GRADE) criteria. Results Of the 272 articles retrieved, 17 were included in qualitative synthesis and meta‐analysis was performed on five studies (comprising 448 patients). Two studies evaluating inter‐observer agreement demonstrated 95% agreement and five studies evaluating procedures reported a 66%‐80% surgical success rate on obstructed patients using PCT. From the proportional meta‐analysis, the sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) were 0.85 (95% CI 0.71‐0.95) 0.78 (95% CI 0.67‐0.87), 0.74 (95% CI 0.52‐0.91), and 0.87 (95% CI 0.73‐0.96), respectively. Publication bias was noted for PPV but not for sensitivity, specificity, or NPV. Based on the GRADE criteria, there were two low, six moderate, and nine high‐quality studies. Conclusions PCT performs sufficiently in diagnosing and managing BOO. However, due to variability in obstruction criteria assessment, more studies comparing diagnostic criteria are warranted.

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Current State of the Art in Non-Invasive Urodynamics

Sahai

Seth

et al. 2013

Curr Bladder Dysfunct Rep

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Continuous non‐invasive measurement of bladder voiding pressure using an experimental constant low‐flow test

Cited by 5 publications

References 11 publications

Correlation between penile cuff test and pressure-flow study in patients candidates for trans-urethral resection of prostate

Correlation between penile cuff test and pressure-flow study in patients candidates for trans-urethral resection of prostate

Use of the penile cuff test to diagnose bladder outlet obstruction: A systematic review and meta‐analysis

Current State of the Art in Non-Invasive Urodynamics

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