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World J Gastroenterol. Apr 14, 2012; 18(14): 1555-1564
Published online Apr 14, 2012. doi: 10.3748/wjg.v18.i14.1555
Published online Apr 14, 2012. doi: 10.3748/wjg.v18.i14.1555
Test | Parameter evaluated | Interpretation |
Resting pressure | IAS (70% of resting pressure) and EAS (30% of resting pressure) | P increased: Hypertonic sphincters (IAS and/or EAS). Oral nitroglycerin can identify the sphincter involved because it relaxes IAS, but not EAS |
Squeeze pressure | EAS | The fatigue rate index can be calculated based on the pressure and duration of the contraction. However, the usefulness of the test in both constipated and incontinent patients is disputed[112,113] |
Rectoanal inhibitory reflex | IAS relaxation during rectal inflation | Absent: Possible hirschsprung; If present with elevated volume inflation: Megarectum[57] |
Rectal sensitivity | Rectal sensory function at different volumes | Elevated sensory thresholds may be linked to changes in rectal biomechanics (megarectum) or to afferent pathway dysfunction[114,115] |
Rectal compliance | Mechanical rectal function | Increased compliance: megarectum[57] |
Attempted defecation | Synchronisation between the increase in rectal pressure and the decrease in anal pressure during attempts to defecate | Three types of dysfunction may be detected[65]: Type 1: Adequate rectal P increase but associated with anal P increase; Type 2: Inadequate rectal P increase associated with anal P increase or inadequate anal P decrease; Type 3: Adequate rectal P increase but inadequate anal P decrease |
- Citation: Bove A, Pucciani F, Bellini M, Battaglia E, Bocchini R, Altomare DF, Dodi G, Sciaudone G, Falletto E, Piloni V, Gambaccini D, Bove V. Consensus statement AIGO/SICCR: Diagnosis and treatment of chronic constipation and obstructed defecation (part I: Diagnosis). World J Gastroenterol 2012; 18(14): 1555-1564
- URL: https://www.wjgnet.com/1007-9327/full/v18/i14/1555.htm
- DOI: https://dx.doi.org/10.3748/wjg.v18.i14.1555