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 Xu Jun Hui
General Surgery
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Methods for examining intestinal obstruction

The simplest test for intestinal obstruction is an upright abdominal X-ray, which can diagnose intestinal obstruction if dilated bowel loops and fluid levels are seen. Diagnosis can also be based on the patient's history and physical signs, such as nausea, vomiting, cessation of passing gas or stool, etc. Currently, abdominal CT can also diagnose intestinal obstruction, with the simplest method being the upright abdominal X-ray. Different types of intestinal obstruction require different treatments. For obstructions caused by tumors or volvulus, prompt surgical treatment is necessary. For general intestinal obstructions, such as those caused by adhesions or intestinal dysmotility, the preferred treatment includes fasting, hydration, anti-inflammatory medications, and other supportive measures. For elderly patients with obstipation-induced obstruction, enema treatment can be initiated first.

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Written by Xu Jun Hui
General Surgery
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How long to fast for intestinal obstruction

Intestinal obstruction and the barrier to the passage of intestinal contents can lead to intestinal obstruction, typically characterized by abdominal pain, bloating, cessation of passing gas and stools, and in cases of high intestinal obstruction, it may also involve nausea and vomiting. How long fasting should be continued in the case of intestinal obstruction depends on whether the patient has resumed passing gas and stools, as well as whether symptoms such as abdominal pain, bloating, nausea, and vomiting have subsided. If the patient's abdominal pain and bloating have mostly subsided, passing gas and stools have resumed, and there is no bloody stool or symptoms of nausea and vomiting, then a gradual reintroduction of a liquid diet can be started. If abdominal pain and bloating do not worsen, and there is passing gas and stools, then a transition to a semi-liquid diet until a normal diet is resumed can be made. Therefore, the duration of fasting for intestinal obstruction should be determined based on the effectiveness of the treatment for the obstruction.

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Written by Li Jin Quan
General Surgery
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Is intestinal obstruction serious?

When the contents of the intestine cannot be normally expelled through the intestinal tract, it is called intestinal obstruction. Its clinical manifestations mainly include abdominal pain, bloating, vomiting, cessation of defecation and flatulence from the anus. The treatment of intestinal obstruction mainly includes conservative treatment and surgical treatment, with the vast majority of patients receiving conservative treatment. This includes gastrointestinal decompression, abstinence from drinking and eating, enhanced anti-inflammatory therapy, and maintenance of electrolyte balance. Only a small portion of patients require surgical treatment. After treatment, the vast majority of patients with intestinal obstruction can recover normally, which means that intestinal obstruction is not a very serious illness.

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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.

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

The treatment methods for intestinal obstruction can be divided into non-surgical and surgical treatments in clinical practice. In our clinic, most cases of intestinal obstruction, such as adhesive obstruction or parasitic obstruction, can be alleviated through gastrointestinal decompression, enemas, and rapid expulsion of gas and stools, achieving the therapeutic goal. However, a small portion of intestinal obstructions do not respond to non-surgical treatments, and vital signs cannot be maintained; such cases require active surgical intervention.