Neurourology, urodynamics, and urogynecology
J Kellogg Parsons, E James Wright in The Brady Urology Manual, 2019
Uroflowmetry provides information on the flow of urine from the urethra: Normal peak flow rates: 20–25 ml/s (male) and 20–30 ml/s (female)Shape of the curve itself can be informativeMechanical obstruction is typically reflected by prolonged flow time and sustained low flow rateAbsent detrusor activity is typically reflected by a sawtooth pattern of nonsustained spurts of reduced flow, reflecting abdominal straining.
Normal urodynamic parameters in children
Jacques Corcos, David Ginsberg, Gilles Karsenty in Textbook of the Neurogenic Bladder, 2015
Uroflowmetry can be used in any patient with suspected lower urinary tract dysfunction. Although it is not a highly specific diagnostic tool,9 it has semiological value and is a good screening tool. The studies can also be used as a follow-up tool to assess results of surgical treatment such as hypospadias repair or posterior urethral valve surgery. It is also very useful in following medical treatment, as in bladder retraining for dysfunctional voiding and nonneurogenic neurogenic bladder.10,11 It is important to know that uroflowmetry in children is not as reproducible as in adults.9,10 Therefore, the trend analysis of multiple studies has more value.
Urinary tract disorders
Henry J. Woodford in Essential Geriatrics, 2022
Uroflowmetry is the measurement of the rate and volume of urine passed during micturition. This is achieved by passing urine into a specialised measurement device. It may be performed following cystometry with the bladder and rectal pressure transducers still in place. In this way, the bladder pressure generated can be matched with urine flow. An underactive bladder or a high pressure required to overcome outflow tract obstruction may be observed (seeFigure 11.6).
Stepwise approach in the management of penile strangulation and penile preservation: 15-year experience in a tertiary care hospital
Published in Arab Journal of Urology, 2019
Sandeep Puvvada, Priyatham Kasaraneni, Ramesh Desi Gowda, Prasad Mylarappa, Manasa T, Kanishk Dokania, Abhishek Kulkarni, Vivek Jayakumar
The complications are described in Table 3. For three patients, SPC was needed as per urethral catheterisation was not possible. One patient lost to follow-up for 1 year had his SPC removed in a local hospital, he later presented back to us with urethro–cutaneous fistula (Figure 7) secondary to urethral stricture, SPC was repeated and after 3 months we excised the fistulous tract and he underwent anastomotic urethroplasty. The other patient had short segment stricture of the proximal penile urethra and he underwent visual internal urethrotomy. This patient is on regular follow-up with uroflowmetry. One patient presented with auto-amputation of penis with an infected wound over the detached penile site, so SPC was performed as a diversion procedure to allow healing followed by perineal urethrostomy after 1 month.
Effects of ospemifene on overactive bladder in postmenopausal women with vulvovaginal atrophy
Published in Climacteric, 2023
E. Russo, G. Misasi, M. M. Montt-Guevara, A. Giannini, T. Simoncini
The urodynamic assessment allows testing several aspects of low urinary tract function. Urodynamics includes uroflowmetry, cystometry and pressure-flow study. The cystometric evaluation aims to assess the bladder’s ability to store urine and any bladder activity during the filling phase. Bladder sensitivity is evaluated by the verbal sensory thresholds that identify the different intensities of the patient’s desire to void during bladder filling: the first sensation of filling, the normal desire to void and the strong desire to void. Bladder capacity (cystometric capacity) is calculated as the maximum tolerable volume of saline that can be infused, while bladder compliance is a measure of bladder elasticity.
Comparison of outcomes of holmium laser versus bipolar enucleation of prostates weighing >80 g with bladder outlet obstruction
Published in Baylor University Medical Center Proceedings, 2023
Mohamed Elsaqa, Omar Elgebaly, Mostafa Sakr, Tamer Abou Youssif, Hazem Rashad, Marawan M. El Tayeb
The study included patients who underwent prostate enucleation for moderate to severe lower urinary tract symptoms—based on an International Prostate Symptom Score (IPSS) ≥8, uroflowmetry with maximum flow rate (Q max) <10 mL/sec, and acute or chronic urine retention—with at least 6 Januarys of follow-up after enucleation. Patients with a history of previous transurethral surgery before enucleation, urethral stricture, prostate cancer, or neurogenic bladder were excluded. Prostate volume was assessed preoperatively using transrectal ultrasound. The operative time required for enucleation and for morcellation were separately identified, excluding the time required to address any bladder stones.
Related Knowledge Centers
- Ageing
- Benign Prostatic Hyperplasia
- Urination
- Urine
- Urethra
- Flow Measurement
- Meta-Analysis
- Urodynamic Testing