Ano-rectal motility responses to pelvic, hypogastric and pudendal nerve stimulation in the Göttingen minipig.

Unlabelled: We investigated the effect of efferent stimulation of the pelvic (PN), hypogastric (HGN) and pudendal (PuN) nerves on ano-rectal motility in Göttingen minipigs using an impedance planimetry probe. Changes in the rectal cross-sectional area (CSA) at five axial positions and pressures in the rectum and anal canal were investigated simultaneously. Pelvic nerve stimulation elicited a CSA decrease in the proximal part of the rectum and a simultaneous CSA increase in its distal part.

Stereotactic electrical stimulation of the pontine micturition centre in the pig.

Objective: To apply stereotactic electrical stimulation of the pig brainstem and thus identify a pontine micturition centre.

Materials And Methods: In 10 anaesthetized female Vietnamese minipigs a needle-electrode was positioned in the pontine region. Pressure responses in the lower urinary tract identified the micturition centre functionally during electrical stimulation.

Male fetal pig lower urinary tract function. Part II: free voiding pattern close to term and in the newborn.

Purpose: We assessed the development of natural voiding function late in gestation and in the immediate postnatal period in a porcine model.

Materials And Methods: The study comprised 7 male fetal minipigs (median age 94 days, 0.88 gestation) and 7 male newborn pigs.