3D High Resolution Manometry and Balloon Expulsion Test in Diagnosis of Dyssynergic Defecation in Children

Each patient will be investigated first by anorectal manometry, standard protocol of conventional parameters will be recorded such as: resting pressure, squeeze pressure, bear down manoeuver, thresholds of sensation and threshold of recto anal inhibitory reflex. 3D picture of anal canal will be recorded. After that balloon with 50 ml of water will be inserted into the rectum and patient will be asked to expel the device within 1 min in privacy.