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Related Experiment Video

Updated: Apr 6, 2026

Quantification of Levator Ani Hiatus Enlargement by Magnetic Resonance Imaging in Males and Females with Pelvic Organ Prolapse
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Three-Dimensional Anorectal Manometry Findings in Primigravida.

D P Wickramasinghe1, C S Perera2, H Senanayake3

  • 1Department of Surgery, Faculty of Medicine, University of Colombo, Kynsey Road, Colombo 8, Sri Lanka. dakshithaw@hotmail.com.

Digestive Diseases and Sciences
|July 25, 2015
PubMed
Summary
This summary is machine-generated.

This study establishes normal 3D anorectal manometry (3DARM) values for primigravid mothers, providing essential reference data for assessing anal sphincter function during pregnancy and postpartum.

Keywords:
PregnancyPrimigravidaThree-dimensional anorectal manometry

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Area of Science:

  • Obstetrics and Gynecology
  • Pelvic Floor Disorders
  • Anorectal Physiology

Background:

  • Vaginal delivery poses a risk for anal sphincter injury.
  • Antepartum reference values are needed to identify postpartum injury.
  • Normal 3D manometry values are currently unavailable for pregnant women.

Purpose of the Study:

  • To determine and describe the normal 3D manometry values in primigravid women.
  • To establish a baseline for postpartum anal sphincter assessment.

Main Methods:

  • Analysis of 3D Anorectal Manometry (3DARM) data from 101 primigravid mothers in their third trimester.
  • Utilized the Given Imaging ManoScan system for data acquisition.

Main Results:

  • Established mean resting pressure (RP) of 87.02 mmHg and maximum squeeze pressure (SP) of 179.21 mmHg.
  • Determined mean high-pressure zone (HPZ) length of 3.67 cm and sensory volumes.
  • Observed pressure asymmetry highest in the lower anal sphincter.

Conclusions:

  • Normal 3DARM values for Sri Lankan primigravid mothers were successfully established.
  • These values serve as crucial reference points for future research and clinical practice.