Pelvimetry by computed tomography in aldult Vietnamese women

Abstract

Background: Determining normal female pelvic parameters supports more accurate diagnosis of cephalo-pelvic disproportion, and reduce the rate of unnecessary cesarean deliveries. Computed tomography (CT) can be used to measure pelvic parameters.

Objectives: The objective of this study was to estimate the diameters and factors affecting pelvic parameters in adult Vietnamese women. Methods: Abdominopelvic MDCT (Multidetector computer tomography) was performed on a group of 257 females ≥ 18 years old. The obstetric parameters were collected and analyzed. Also, investigate the relationship between thèm and the age groups, parity, and height.

Results: The mean and standard deviation of the measured diameters were: obstetric conjugate diameter 11.8 ± 0.9 cm, transverse median diameter 12.2 ± 0.9 cm, anteroposterior diameter of the mid-pelvis 11.2 ± 0.8 cm, interspinous diameter 10.6 ± 0.8. The obstetric conjugate diameter, interspinous diameter, inter-tuberous diameter of the outlet, circumference of the inlet pelvis, and circumference of the mid-pelvis were showed narrower with increasing age; women in the group ≥40 years, presented significantly smaller diameters than the 18–29 group, as well as between the ≥40 group against the 30–39 group, for this all diameters. The midpelvis diameters and sagittal outlet diameters in women who have not experienced delivery were significantly smaller than the delivery group. All diameters of women's pelvis with short stature (height ≤ 145 cm) were lower compared to women with normal stature.

Conclusions: The findings of the current study provide the reference values in adult Vietnamese women, which can aid in diagnosing pelvic disproportion more accurately