Changes of denervation in the anal sphincter striated and smooth muscle in patients with neurogenic faecal incontinence are well established. This study aimed to determine if there is also a more proximal visceral autonomic abnormality. Thirty women with purely neurogenic faecal incontinence (prolonged pudendal nerve latencies and an intact sphincter ring) and 12 patients with neuropathic chang...

The internal and sphincter receives its parasympathetic nerve supply from the sacral outflow and its sympathetic supply from the thoracicolumbar outflow of the spinal cord. In order to investigate the influence of the tonic discharge of these nerves, eight healthy subjects receiving high spinal anaesthesia (T 6-T 12) and five receiving low spinal anaesthesia (L 5-S 1) were examined. Continuous ...

OBJECTIVE To re-evaluate previously published findings from an uncontrolled before-after evaluation of an intervention programme to reduce the incidence of anal sphincter tears. A key component of the programme was the use of a hands-on technique where the birth attendant presses the neonate's head during the final stage of delivery while simultaneously supporting the woman's perineum with the ...

It is well known both by clinical examination and by objective measurement that a high pressure zone is to be found in the anal canal, due to the action of the anal sphincteric muscles. Division of part of the internal anal sphincter in the operation of internal sphincterotomy resulted in a diminution in this pressure zone (Bennett and Duthie, 1964). The pressure remaining after internal sphinc...

PURPOSE This study was designed to determine whether functional variations of internal sphincter activity occur in order to differentiate between patients with anal fissures from those with hemorrhoids. METHODS Thirty patients with chronic anal fissure (median age, 28 years; 12 females), 22 patients with hemorrhoids (median age, 37 years; 7 females), and 33 control volunteers (median age, 48....

Introduction Fetal incontinence due to agenesis or damage of the sphincter apparatus is a major cause of social dilemma in the pediatric, adolescent and adult population. The anal sphincter consists of an internal sphincter which is a smooth muscle complex and is responsible among other factors for the maintenance of resting pressures. The internal sphincter is surrounded by an external sphinct...

BACKGROUND AND OBJECTIVES Lidocaine concentration potentially able to determine nervous tissue injury is still not well established. This study aimed at investigating the effect of increasing spinal lidocaine concentrations in single injection through Quincke needle. METHODS After the Animal Experiment Ethical Committee approval, 40 adult animals were anesthetized with fentanyl and etomidate ...

OBJECTIVE To evaluate the prevalence of obstetrical anal sphincter injuries (OASIS), which include third and fourth degree perineal tears in primigravida in routine versus selective mediolateral episiotomy. Secondly, to determine the rate of episiotomy in local settings. METHODS This randomized control trial was carried out in the labor ward of a tertiary hospital of the Universiti Kebangsaan...