Adult urologyIs catheter cause of subjectivity in sensations perceived during filling cystometry?
Section snippets
Material and methods
The study consisted of 45 men with lower urinary tract symptoms, attributed to benign prostatic hyperplasia. The mean patient age was 57.9 years (range 48 to 79). The exclusion criteria included drug treatment that could interfere with bladder function, neuromuscular dysfunction of the lower urinary tract, previous pelvic trauma or surgery, diabetes mellitus, and mental disturbances.
At the beginning of the test, verbal and written information about the possible sensations was given to the
Results
In the third phase, all patients reported sensations. However, in the first phase, of the 45 patients, 21 (46.7%) had an FS, 10 (22.2%) had an FD, and 4 (8.9%) had an ND, despite the lack of catheterization. None of the patients reported an SD. In the second phase, of the 45 patients, 39 (86.7%) had an FS, 33 (73.3%) had an FD, 24 (53.3%) had ND, and 8 (17.8%) had an SD, despite the lack of filling.
The number, mean, median, standard deviation, and minimal and maximal values of the time elapsed
Comment
Sensory input is essential for conscious bladder control, and pathologic bladder sensation may cause serious symptoms.7 However, sensations in the lower urinary tract are not easy to evaluate because of their subjectivity.2 To help alleviate this subjectivity, the use of objective and semiobjective tests was recommended by the International Continence Society, but confounding results still occur.5, 8 In our previous study, we reported that 49 (83%) of the 59 patients reported an FS, 47 (79.6%)
Conclusions
The urethral catheter is one of the factors contributing to the sensations reported during fake phases, but it is not the only one. Without a urethral catheter or bladder filling at all, nearly one half of the subjects reported an FS, one quarter reported an FD, and nearly 10% reported an ND to void. After insertion of the urethral catheter (but without bladder filling), most reported these sensations. The calculated ratios in the first and second phases were similar to those obtained with
References (12)
- et al.
Comparison in young healthy volunteers of three different parameters of constant current stimulation used to determine sensory thresholds in the lower urinary tract
J Urol
(1996) Study on the correlation between subjective perception of bladder filling and the sensory threshold towards electrical stimulation in the lower urinary tract
J Urol
(1992)The normal pattern of perception of bladder filling during cystometry studied in 38 young healthy volunteers
J Urol
(1998)- et al.
Cystometrical sensory data from a normal populationcomparison of two groups of young healthy volunteers examined with 5 years interval
Eur Urol
(2002) - et al.
Changes in bladder volumes with repetition of water cystometry
Urol Res
(1984) - et al.
The standardization of terminology of lower urinary tract function recommended by the International Continence Society
Scand J Urol Nephrol Suppl
(1988)