[Diagnosis of stress urinary incontinence using poster urethrovesical angel measured by ultrasonography].
OBJECTIVE
To evaluate the clinical value of ultrasonography detecting the poster urethrovesical angle (PUVA) in diagnosis of stress urinary incontinence (SUI).


METHODS
From Jan. 2006 to Dec. 2008, the PUVA in resting phase (PUVA-r) and stress phase (PUVA-s) between 84 patients with SUI and 100 healthy women were measured by color Doppler ultrasound, including 57 cases in SUI degree I, 22 cases in SUI degree II, 5 cases in SUI degree III.


RESULTS
(1) The PUVA-r and PUVA-s were (130+/-29) degrees and (158+/-36) degrees in SUI patients, which were significantly higher (113+/-19) degrees and (115+/-23) degrees in control group (P<0.01). (2) Correlation analysis showed that PUVA-s was positively correlated with the severity of SUI (P<0.01). (3) The area under the receiver operating characteristic curves (ROC) of PUVA-s was 0.82 (95% CI: 0.76-0.89) between SUI patients and healthy women. When PUVA-s>or=140 degrees was chosed as the cut-off value, the specificity, accuracy rate and positive predictive value in diagnosis of SUI were 84%, 79%, 81%, which were significantly higher than those when cut-off value of PUVA-s>or=120 degrees (54%, 68%, 62%; P<0.05).


CONCLUSIONS
The PUVA-s in SUI patients are significantly increased and is positively correlated with the severity of SUI, which are indicated that PUVA-s>or=140 degrees should be used as cut-off value in diagnosis of SUI by ultrasonography.
Lu
Ji-hong
JH
Department of Obstetrics and Gynecology, Shanghai Pudong New Area Gongli Hospital, Shanghai 200135, China.
Li
Qian
Q
Zhu
Hong
H
Zhu
Xiao-qing
XQ
Xiong
Miao
M
Yang
Bin-lie
BL
Zhang
Yong-xiu
YX
D000368:Aged; D005260:Female; D006801:Humans; D008875:Middle Aged; D012372:ROC Curve; D012680:Sensitivity and Specificity; D012720:Severity of Illness Index; D018615:Ultrasonography, Doppler, Color; D014521:Urethra / Q000000981:diagnostic imaging* / Q000473:pathology; D001743:Urinary Bladder / Q000000981:diagnostic imaging* / Q000473:pathology; D014550:Urinary Incontinence, Stress / Q000000981:diagnostic imaging* / Q000473:pathology