mechanical ileus

(redirected from mechanical obstruction)

ileus

 [il´e-us]
failure of appropriate forward movement of bowel contents. It may be secondary to either mechanical obstruction of the bowel (mechanical ileus) or a disturbance in neural stimulation (adynamic ileus). Ileus is a surgical emergency that may or may not require surgical intervention; the cause needs to be established promptly.

Adynamic (or paralytic) ileus often accompanies peritonitis and is also found accompanying the colicky pains of gallstones or kidney stones; following spinal cord injury, pneumonia, or other generalized conditions; or being caused by peritoneal contamination by pus (from a perforated appendix) or acid (from a perforated ulcer). Mechanical ileus is that due to adhesions, ischemia, tumor, or stone and requires prompt decompression of the bowel to prevent perforation.
Symptoms. The principal symptoms of ileus are abdominal pain and distention, constipation, and vomiting in which the vomitus may contain fecal material. If the intestinal obstruction is not relieved, the circulation in the wall of the intestine is impaired and the patient appears extremely ill with symptoms of shock and dehydration.
Treatment. Distention of the abdomen is relieved by decompression, which involves intubation with a long, balloon-tipped tube (e.g., miller-abbott tube) that extends to the site of the obstruction, and use of constant suction. Because of the disruption in absorption of fluids and nutrients from the intestinal tract, fluids, electrolytes, and glucose are given intravenously. Surgical intervention to remove the cause of ileus is usually necessary when the obstruction is complete or the bowel is likely to become gangrenous. The type of surgical procedure will depend on the condition of the bowel and the cause of the obstruction. In some cases ileostomy or colostomy, either temporary or permanent, may be necessary. In cases of paralytic ileus due to causes other than contamination by pus or acid, tube decompression may be sufficient, but even in these patients, surgery may be needed to protect the bowel from overdistention and perforation. See also intestinal obstruction for patient care.
adynamic ileus that caused by inhibition of bowel motility; see ileus.
dynamic ileus (hyperdynamic ileus) spastic ileus.
mechanical ileus that caused by a mechanical cause, such as hernia, adhesions, or volvulus; see ileus.
meconium ileus ileus in the newborn due to intestinal obstruction by thick meconium.
paralytic ileus adynamic ileus.
spastic ileus that due to persistent contracture of a bowel segment.
ileus subpar´ta ileus due to pressure of the gravid uterus on the pelvic colon.

me·chan·i·cal il·e·us

obstruction of the bowel due to some mechanical cause, for example, volvulus, gallstone, adhesions.

me·chan·i·cal il·e·us

(mĕ-kan'i-kăl il'ē-ŭs)
Obstruction of the bowel due to some mechanical cause, e.g., volvulus, gallstone, adhesions.

ileus

intestinal obstruction, especially functional obstruction or failure of peristalsis. It frequently accompanies peritonitis, and usually results from disturbances in neural stimulation of the bowel. In the horse it is a major problem in the recovery period after surgical treatment for colic. Called also paralytic, functional and adynamic ileus.

dynamic ileus
obstructive ileus.
mechanical ileus
obstructive ileus.
obstructive ileus
a physical lesion accounts for the intestinal distention.
sentinel loop ileus
a distended intestinal loop caused by localized paralytic ileus, usually resulting from local infection or pain.
References in periodicals archive ?
While a majority of cases are caused by mechanical obstruction of the cystic duct by a calculous, a much smaller percentage are of the acalculous variety, typically 10% to 15% of all cases.
rock, hair) in the gastrointestinal tract may form bezoars and result in partial or complete mechanical obstruction in the digestive tract (1,2).
Subsequent non-contrast CT revealed two irregularly marginated solid mesenteric masses (Figure 1A, 1B) causing proximal small bowel dilatation and a collapsed small bowel loop (Figure 1C) distal to the mesenteric mass consistent with mechanical obstruction.
Drugs of choice for mechanical obstruction are 5[alpha]-reductase inhibitors, whereas alpha blockers would be the most appropriate therapy for dynamic component of BPH.
AWE Limited has been advised by the Operator of the AAL-4X appraisal well, Santos Limited, that due to a mechanical obstruction in the well bore the proposed Drill Stem Tests (DST) in the K-sand and G-sand reservoirs cannot be completed in the current hole.
Those patients with mechanical obstruction suggestive of UPJO on diuretic renography, significant flank pain, or recurrent urinary tract infections are often considered for pyeloplasty, particularly if there is evidence of decline in differential renal function (DRF) on serial diuretic renal scans.
It is a mechanical obstruction for which the definitive treatment is aortic valve replacement.
This postoperative increase in IOP is considered to be the consequence of remaining viscoelastic substances at the end of surgery leading to mechanical obstruction of trabecular meshwork by these substances which reduce the outflow from the anterior chamber.
In our patient, however, there was no proven mechanical obstruction and it seems that the clinical manifestations of the gastrointestinal tract were due to intestinal pseudo-obstruction.
Bilateral encephaloceles are uncommon, and the resulting bilateral conductive hearing loss secondary to mechanical obstruction of ossicular vibration is even more rare.
Among the major threats of the equine health, gastrointestinal (GI) parasites mainly affect equines by inhibiting nourishment, anorexia, inadequacy in performance, mechanical obstruction of GI passage or compression of organs, weight loss, blood loss, debility, toxicosis, disease transmission other than parasitic diseases, facilitating secondary infection of bacteria, viruses and other microbial pathogens.
The management of this condition is challenging and catastrophic outcomes may occur if urgent, appropriate management is not implemented to relieve the mechanical obstruction (1-3).