Causes of intestinal obstruction

Written by Zhang Peng
General Surgery
Updated on October 27, 2024
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Generally, the basic causes of intestinal obstruction can be divided into three categories. The most common is mechanical intestinal obstruction, which mainly includes blockage of the intestinal lumen, such as large fecal masses or corresponding foreign objects, and even parasites. The second type is compression of the intestinal tube, which can be caused by adhesions leading to torsion of the intestine or compression by tumors, and congenital inflammatory strictures and tumors can cause mechanical intestinal obstruction. The second major category is dynamic intestinal obstruction, which is primarily due to weakened peristaltic ability of the intestine, resulting in paralytic intestinal obstruction. This condition can be improved by adjusting intestinal function disorders or treating intestinal spasms. The third type is intestinal obstruction caused by vascular issues in the intestines, most commonly thrombosis of the mesentery or compression causing vascular disorders of the intestines.

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Written by Zhang Peng
General Surgery
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Does intestinal obstruction cause fever?

It is possible, as the primary pathophysiological change in intestinal obstruction is the translocation of intestinal flora causing infection, which can lead to symptoms such as fever. Therefore, fever is also a factor in assessing the condition. If a patient has persistent high fever, they may even develop septic shock, which could necessitate surgical intervention such as exploratory laparotomy. Thus, fever is a common factor in intestinal obstruction, but it is not a mandatory one.

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Written by Li Jin Quan
General Surgery
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Does intestinal obstruction expel gas?

Intestinal obstruction typically refers to the inability of the intestinal contents to pass through the intestines and be expelled from the body normally. Common clinical manifestations include abdominal pain, bloating, vomiting, and cessation of bowel movements and passing gas. However, in some cases, such as partial intestinal obstruction or high intestinal obstruction, gas can still be expelled from the anus below the obstruction site. This means that some intestinal obstructions can still pass gas, but the ability to pass gas does not mean the patient has recovered.

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Written by Zhang Peng
General Surgery
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How to diagnose intestinal obstruction?

How to diagnose intestinal obstruction, which is a common acute abdomen condition in surgery. If symptoms such as cessation of passing gas or stools, abdominal pain, and vomiting occur, it may suggest the presence of an intestinal obstruction. The simplest diagnostic method for intestinal obstruction is to perform an upright abdominal plain film to assess the degree of obstruction, based on the presence or absence of fluid levels. Furthermore, identifying the fundamental cause of the obstruction is essential; this can be achieved through enhanced abdominal CT and colonoscopy to make a determination. An abdominal ultrasound can also be performed, which provides a better understanding of the condition of the intestinal obstruction. Using abdominal ultrasound, the presence of effusion can be detected, and by aspirating the effusion, its properties can be analyzed to determine if there is a condition such as bowel necrosis.

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Written by Li Jin Quan
General Surgery
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How is intestinal obstruction treated?

Patients with intestinal obstruction primarily receive the following treatments: First, basic treatment, which includes gastrointestinal decompression, where patients need to refrain from eating and drinking, meaning they cannot consume food or water. Additionally, a gastric tube may be inserted. Second, frequent vomiting combined with the prohibition of food and drink can lead to disturbances in electrolyte and acid-base balance, so intravenous fluid supplementation is used to correct these imbalances. Third, appropriate antibiotics are used to prevent infection. Further, in cases of intestinal obstruction, abdominal distension can cause a sensation of bloating in the stomach, and somatostatin may be used to reduce the secretion of gastrointestinal fluids and alleviate abdominal distension. Alongside basic treatment, it’s essential to monitor the abdominal condition to see if it worsens, and surgical intervention should be considered when necessary.

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Written by Zhang Peng
General Surgery
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Enema method for intestinal obstruction

Enemas are an effective treatment measure in the management of intestinal obstruction. An enema involves a nurse using an enema bag to introduce about 500 milliliters of soapy water through a rounded-tip catheter into the rectum via the anus. Typically, the catheter is inserted about 30 centimeters deep. The purpose of injecting soapy water into the rectum is to stimulate intestinal peristalsis, leading to the expulsion of intestinal contents. During this process, it is important to avoid damage to the intestinal mucosa and consider the patient's tolerance. Generally, it is preferable to retain the soapy water for an extended period for better results.