Korean J Urol.  2015 Oct;56(10):722-728. 10.4111/kju.2015.56.10.722.

The role of noninvasive penile cuff test in patients with bladder outlet obstruction

• Kazemeyni
• Otroj E
• Mehraban D
• Naderi GH
• Ghadiri A
• Jafari M

• KMID: 2344116
• DOI: http://doi.org/10.4111/kju.2015.56.10.722

Abstract

PURPOSE
The aim of this study was to compare the penile cuff test (PCT) and standard pressure-flow study (PFS) in patients with bladder outlet obstruction.
MATERIALS AND METHODS
A total of 58 male patients with moderate to severe lower urinary tract symptoms (LUTS) were selected. Seven patients were excluded; thus, 51 patients were finally enrolled. Each of the patients underwent a PCT and a subsequent PFS. The sensitivity (SE), specificity (SP), positive predictive value (PPV), negative predictive value (NPV), and likelihood ratio were calculated. Chi-square and Fisher exact test were used to evaluate relationships between PCT results and maximal urine flow (Qmax); a p<0.05 was considered statistically significant.
RESULTS
The mean (±standard deviation) age of the study group was 65.5±10.4 years. Overall, by use of the PCT, 24 patients were diagnosed as being obstructed and 27 patients as unobstructed. At the subsequent PFS, 16 of the 24 patients diagnosed as obstructed by the PCT were confirmed to be obstructed, 4 were diagnosed as unobstructed, and the remaining 4 patients appeared equivocal. Of the 27 patients shown to be unobstructed by the PCT, 25 were confirmed to not be obstructed by PFS, with 13 equivocal and 12 unobstructed. Two patients were diagnosed as being obstructed. For detecting obstruction, the PCT showed an SE of 88.9% and an SP of 75.7%. The PPV was 66.7% and the NPV was 93%.
CONCLUSIONS
The PCT is a beneficial test for evaluating patients with LUTS. In particular, this instrument has an acceptable ability to reject obstruction caused by benign prostatic hyperplasia.

Keyword

Lower urinary tract symptoms; Nomograms; Penis; Urinary bladder neck obstruction; Urodynamics

MeSH Terms

Aged
Aged, 80 and over
Humans
Male
Middle Aged
Nomograms
Penis/physiopathology
Predictive Value of Tests
Pressure
Sensitivity and Specificity
Urinary Bladder Neck Obstruction/*diagnosis/physiopathology
Urination/physiology
Urodynamics

Figure

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  Fig. 1 The sphygmomanometer cuff that was attached around the penis and in the shaft area.

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