KHẢO SÁT KÍCH THƯỚC KHUNG CHẬU Ở PHỤ NỮ VIỆT NAM TRƯỞNG THÀNH BẰNG CHỤP CẮT LỚP VI TÍNH

Abstract

Background: In obstetric practice, determining the parameters of the normal female pelvis in the population is important; support more accurate diagnosis of cephalo-pelvic disproportion, reduce the rate of indications for unnecessary cesarean section. Abdominopelvic computed tomography 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) were 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, 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, intertuberous diameter of the outlet, circumference of the inlet pelvis, 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 mid-pelvis diameters and sagittal outlet diameter in women who have not experience delivery showed significantly smaller than delivery group. All diameter of women pelvis with short stature (height  ≤ 145 cm) were lower compared to women with normal stature.

Conclusions: The findings of the current study present the reference values for the obstetric diameters of the normal female pelvis in the population.