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The enteric nervous system directly controls the gut motility, whereas the extrinsic nerve pathways influence gut contractility indirectly through modifying this enteric innervation. [3] In almost all cases of neurogenic bowel dysfunction it is the extrinsic nervous supply affected and the enteric nervous supply remains intact.
Treatment targets nutritional support, improving intestinal motility, and minimizing surgical intervention. [4] Bacterial overgrowth of the small intestine can occur in chronic cases – presenting as malabsorption, diarrhea, and nutrient deficiencies [12] – which may require the use of antibiotics.
Functional constipation, also known as chronic idiopathic constipation (CIC), is defined by less than three bowel movements per week, hard stools, severe straining, the sensation of anorectal blockage, the feeling of incomplete evacuation, and the need for manual maneuvers during feces, without organic abnormalities.
Patients with chronic intestinal pseudo-obstruction that involves the small bowel commonly present with symptoms such as constipation, abdominal pain, nausea, and vomiting. [6] Diarrhea may result from bacterial overgrowth brought on by small bowel dysmotility-induced stasis.
Constipation is more concerning when there is weight loss or anemia, blood is present in the stool, there is a history of inflammatory bowel disease or colon cancer in a person's family, or it is of new onset in someone who is older. [12] Treatment of constipation depends on the underlying cause and the duration that it has been present. [4]
A significant pathophysiological factor in obstructed defecation is dysfunction of anorectal and colon motility, [43] and impaired pelvic floor function. [22] One review stated that the most common causes of disruption to the defecation cycle are associated with pregnancy and childbirth, gynaecological descent , or neurogenic disturbances of ...
The treatment of fecal impaction requires both the remedy of the impaction and treatment to prevent recurrences. Decreased motility of the colon results in dry, hard stools that in the case of fecal impaction become compacted into a large, hard mass of stool that cannot be expelled from the rectum. [citation needed]
Intestinal failure is decreased intestinal function such that nutrients, water, and electrolytes are not sufficiently absorbed. Short bowel syndrome is when there is less than 2 m (6.6 ft) of working bowel and is the most common cause of intestinal failure. [3]