Relationship of urodynamic parameters and obesity in women with stress urinary incontinence.
OBJECTIVE
To identify the relationship of obesity and stress urinary incontinence and of obesity and urodynamic parameters in patients with stress urinary incontinence (SUI).


METHODS
The study included 98 women who were clinically diagnosed as having stress urinary incontinence and 102 women, the control group, who had no stress urinary incontinence. We compared body mass index (BMI) as a parameter of obesity between the two groups. BMI was defined as weight (in kilograms) divided by height (in square meters). All patients with SUI underwent urodynamic tests, and we determined the relationship between BMI and urodynamic parameters by using the Pearson correlation coefficient.


RESULTS
There was no difference in age between the two groups. However, BMI was significantly higher in women with SUI than in the control group. There were more vaginal deliveries and higher parity in women with SUI than in the control group. BMI was significantly higher in women with SUI than in the control group only in the younger group, while parity and number of vaginal deliveries were higher in the SUI group than control group among all age groups. The coefficient of multiple logistic regression between obesity and SUI was .131 (r = .131). There was no relationship between BMI and urodynamic parameters among patients with SUI. The average intraabdominal pressure was significantly increased in the obese group over that in the nonobese group. Correlation between BMI and intraabdominal pressure showed a close relationship.


CONCLUSIONS
BMI was higher in the SUI group than control group. Obesity may be an important etiologic factor in SUI but did not influence urodynamic parameters, and there was no relationship between BMI and urodynamic parameters.
Bai
Sang Wook
SW
Department of Obstetrics and Gynecology, College of Medicine, Yonsei University, 134, Sinchon-dong, Seodaemun-gu, Seoul, Korea 120-752. swbai@yumc.yonsei.ac.kr
Kang
Ji Yong
JY
Rha
Koon Ho
KH
Lee
Moo Sang
MS
Kim
Jeong Yeon
JY
Park
Ki Hyun
KH
D000328:Adult; D000368:Aged; D015992:Body Mass Index; D016022:Case-Control Studies; D036861:Delivery, Obstetric; D005260:Female; D006801:Humans; D008875:Middle Aged; D009765:Obesity; D010298:Parity; D011247:Pregnancy; D001743:Urinary Bladder / Q000502:physiology*; D014550:Urinary Incontinence, Stress; D014563:Urodynamics