Mối tương quan giữa kích thước khe niệu dục và mức độ sa tạng chậu trên cộng hưởng từ động sàn chậu

Abstract

This study aimed to evaluate the correlation between the size of the urogenital hiatus (UGH) and the severity of pelvic organ prolapse in women by mean of dynamic pelvic floor magnetic resonance imaging (MRI). This study included 80 female patients diagnosed with pelvic organ prolapse who underwent dynamic pelvic floor MRI at Hanoi Medical University Hospital from June 2023 to December 2025. Results: The mean age of the patients was 60.5 ± 14.1 years old, with 75.0% being postmenopausal. The rate of vaginal delivery was 86.3%, and 92.5% of the patients had ≥ 2 parity. The anteroposterior diameter and hiatus area demonstrated a weak to moderate correlation with pelvic organ prolapse (r_s = 0,367 - 0,595; p < 0,05). The transverse diameter showed a weak correlation with cystocele, uterine prolapse, Douglas pouch prolapse (r_s = 0,257 - 0,398; p < 0,05), and no significant correlation with rectal prolapse (r_s = 0.066; p > 0,05). Conclusion: The size of the urogenital hiatus, particularly its anteroposterior diameter and area, are associated with the severity of pelvic organ prolapse. Dynamic pelvic floor MRI is a useful imaging modality that provides clear delineation of UGH parameters. Further studies with clinical correlation are needed to establish cutoff values and determine their diagnostic utility.