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Urodynamic testing or urodynamics is a study that assesses how the bladder and urethra are performing their job of storing and releasing urine. Urodynamic tests can help explain symptoms such as: incontinence [1] frequent urination; sudden, strong urges to urinate but nothing comes out; problems starting a urine stream; painful urination
Some uses of this procedure are: to study the presence of vesicoureteric reflux, study of urethra during micturition, presence of bladder leak post surgery or trauma, and is used in urodynamic testing to assess urinary incontinence. [2] Indications for performing VCUG:
Cystometry, also known as flow cystometry, is a clinical diagnostic procedure used to evaluate bladder function.Specifically, it measures contractile force of the bladder when voiding.
A voiding cystourethrography study uses contrast dye to obtain images of the bladder both when it is full and after urination which can show changes in bladder shape consistent with neurogenic bladder. [9] Urodynamic studies are an important component of the evaluation for neurogenic bladder.
The medical school environment may also be a factor. A study in 2012 also showed after an analysis of match rates from schools between 2005 and 2009 that 20 schools sent more than 15 students into urology (1 standard deviation above the median), with Northwestern University sending 44 students over those five years. [10]
Specialized testing to further characterize the degree of urethral hypermobility may include urodynamic testing, voiding cystourethrography, pelvic ultrasound, and electromyography. [5] These modalities are only recommended for people who experience ongoing symptoms despite an adequate trial of pelvic floor muscle training.
Urethral retro-resistance pressure (URP) is a new clinical measure of urethral function measured by a new urodynamic measurement system. URP is the pressure required to achieve and maintain an open sphincter. [4]
A comparative study among patients implanted with different models of artificial urinary sphincter and achieved social continence showed no difference between two groups in regards of urodynamic tests, such as flow rate, urethral pressure, etc. [2] A randomised controlled trial found that the artificial urinary sphincter was non-inferior to the ...