Can We Evaluate Hiatal Ballooning by Measuring the Anteroposterior Diameter With 2‐Dimensional Translabial Ultrasonography?

Objectives To analyze the association between the anteroposterior hiatal diameter and pelvic organ prolapse and to determine whether 2‐dimensional translabial ultrasonography can evaluate hiatal ballooning by measuring the anteroposterior diameter. Methods This study was a retrospective analysis of 312 women seen for lower urinary tract symptoms or pelvic organ prolapse between December 2014 and July 2016. All women had an International Continence Society (ICS) Pelvic Organ Prolapse Quantification (POP‐Q) system examination and 4‐dimensional translabial ultrasonography. The anteroposterior hiatal diameter was measured in the midsagittal plane, and the hiatal area was measured in the minimal axial plane during the maximal Valsalva maneuver. Results Valid data from 294 patients were analyzed. International Continence Society POP‐Q stage 0 was found in 121 women, stage 1 in 49, stage 2 in 78, stage 3 in 42, and stage 4 in 4. The anteroposterior diameter had an excellent linear correlation (r = 0.814; P