A study of the use of radiological pelvimetry in a Chinese population.
BACKGROUND
To audit the use of radiological pelvimetry in a teaching obstetric unit in a Chinese population.


METHODS
A prospective observational study included all radiological pelvimetries performed in one obstetric unit over 8 months. All pelvimetries were assessed by one of the authors, and the outcome of pregnancy was reviewed.


RESULTS
Among 5576 women delivered in that period, 298 (5.3%) had a pelvimetry. The anteroposterior diameter of the outlet (APO) was on average 9.3 mm smaller than the obstetric conjugate (OC), and was below the definition of pelvic contraction in more than 70% of cases. Previous Cesarean sections accounted for 90.9% of the antenatal radiological pelvimetries. The result of this investigation affected the clinical management in more than 80% of these patients. The chance of successful vaginal delivery was directly related to the pelvic dimensions.


CONCLUSIONS
Radiological pelvimetry may provide additional information which could facilitate the counseling of patients with a history of previous Cesarean section.
Lau
T K
TK
Department of Obstetrics and Gynaecology, Prince of Wales Hospital, Chinese University of Hong Kong, Shatin.
Leung
C M
CM
Li
C Y
CY
D044466:Asian People; D002585:Cesarean Section; D002681:China; D005260:Female; D006801:Humans; D007746:Labor Presentation; D010387:Pelvimetry; D010388:Pelvis / Q000000981:diagnostic imaging*; D011247:Pregnancy; D011446:Prospective Studies; D011859:Radiography; D014219:Trial of Labor