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Researchers from Cleveland Clinic discuss findings in life sciences.

Women's Health Weekly

| April 02, 2009 | COPYRIGHT 2009 NewsRX. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)Copyright

According to recent research from the United States, "During vaginal delivery dual injuries of the pudendal nerve and the external urethral sphincter (EUS), along with other injuries, are correlated with later development of stress urinary incontinence. It is not known how combinations of these injuries affect neuromuscular recovery of the micturition reflex."

"We investigated the EUS electromyogram (EMG) and the pudendal nerve motor branch potentials (PNMBP) during voiding 4 days, 3 weeks or 6 weeks after injury; including vaginal distension (VD), pudendal nerve crush (PNC), both PNC and VD (PNC+VD), and pudendal nerve transection (PNT); and in controls. Pudendal nerve and urethral specimens were excised and studied histologically. No bursting activity was recorded in the EUS EMG during voiding 4 days after all injuries, as well as 3 weeks after PNC+VD. Bursting activity demonstrated recovery 3 weeks after either VD or PNC and 6 weeks after PNC+VD, but the recovered intraburst frequency remained significantly decreased compared to controls. Bursting results of PNMBP were similar to the EMG, except bursting in PNMBP 4 days after VD and the recovered intraburst frequency was significantly increased compared to controls after PNC and PNC+VD. After PINT, neither the EUS nor the pudendal nerve recovered ...

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Source: HighBeam Research, Researchers from Cleveland Clinic discuss findings in life sciences.

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