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Table 6 Measured parameters in the patients and the control group (mean ± SD) during straining

From: Role of three-dimensional ultrasound in females with obstructed defecation (in comparison with defecography)

3D Ultrasonography measurementsPatientsControl groupP value
Mean ± SDMean ± SD
Levator Hiatus
 AP Diameter (cm)6.6 ± 0.44.6 ± 0.3< 0.001
 Tr Diameter (cm)4.9 ± 0.43.9 ± 0.3< 0.001
 Area (cm2)23.1 ± 1.015.2 ± 0.6< 0.001
IS Thickness (mm)1.8 ± 0.62.8 ± 0.5< 0.001
ES Thickness (mm)1.6 ± 0.31.8 ± 0.180.02
PRS Thickness (mm)3.8 ± 0.54.1 ± 0.5< 0.001
  1. Receiver operator curve for the diagnosis of abnormal hiatal distensibility (“ballooning”) on the basis of symptoms of prolapse during maximum Valsalva (straining)
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