Changes in aetiological determinants of urinary fistula

Objective： Objective： To investigate the localization and aetiolagieal factors associated with urinary fistulae at the University Teaching Hospital in Benin-City, Nigeria. Methods： Records on 96 patients treated by the authors at the gynaecological ward of the University of Benin Teaching Hospital, Benin-City, Nigeria between January 1997 and December 2006 were analyzed. Information extracted and analyzed included data on socio-biological, demographic, and obstetric event of the antecedent pregnancy. Results： The average age of patients with vesico-vaginal fistula（VVF） was 34 years with a mean parity of 3. The various mean values for patients＇height, weight and body mass index （BMI） were 1.58m, 58.29kg and 24.13 respectively. The majority （92.7%） of fistulas are obstetric in origin. While 5.21% were due to total abdominal hysterectomy and 2.08% due to post irradiation for advanced gynecological maligmancy. 53（55.21% ） patients had obstetric operative interventions （ Forceps or vacuum extraction, and or caesar