Anal sphincter physiology.

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Obstetric anal sphincter injury

Obstetric trauma following childbirth is the primary cause of faecal incontinence in women. Injury to the anal sphincter complex is common: it has been clinically diagnosed in 0.4–2.5% of vaginal deliveries involving a mediolateral episiotomy and in up to 19% of cases of midline episiotomy. Studies using endoanal ultrasound have reported occult anal sphincter injury in up to 35% of women after ...

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Obstetric anal sphincter injury.

Anal sphincter injury during childbirth is a leading cause of anal incontinence. In a study of more than 20 000 consecutive vaginal deliveries, clinically diagnosed obstetric anal sphincter injury occurred in 2.9% of primiparous women and 0.8% of multiparous ones. Of women who have sustained such an injury, 60-80% are asymptomatic at 12 months, of whom most report incontinence of flatus only, r...

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Anal Incontinence and Obstetric Anal Sphincter Tears

PURPOSE: To evaluate the prevalence of anal incontinence (AI) in primiparous women five years after their first delivery; to investigate if an 8-12 hour time delay of primary repair affects AI at 1-year follow-up; to study the association between endoanal ultrasonography and anorectal manometry in relation to AI in primiparous women; to evaluate whether an endoanal ultrasonographic derived sphi...

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Internal anal sphincter: Clinical perspective.

OBJECTIVE To summarise current knowledge of Internal anal sphincter. BACKGROUND The internal anal sphincter (IAS) is the involuntary ring of smooth muscle in the anal canal and is the major contributor to the resting pressure in the anus. Structural injury or functional weakness of the muscle results in passive incontinence of faeces and flatus. With advent of new assessment and treatment mod...

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Anal incontinence: evaluation of the anal sphincter by endoscopic ultrasound.

incontinence (gas and liquid stools) shortly after proctologic surgery (fistulectomy). She did not report any obstetric trauma. We performed an anal inspection and a digital rectal examination. There were no anatomical defects, but a severe hypotonic anal sphincter was encountered. Since there is a radial-scanning ultrasound endoscope with frontal vision (Pentax EG3630UR) available in our Unit,...

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ژورنال

عنوان ژورنال: Gut

سال: 1994

ISSN: 0017-5749

DOI: 10.1136/gut.35.9.1329