Precursors of acute appendicitis

Written by Ren Zheng Xin
Gastroenterology
Updated on September 02, 2024
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Acute appendicitis is acute inflammation of the appendix lumen, and currently, there are no particularly typical precursors, but the causes of acute appendicitis should be noted, which are related to obstruction and infection of the appendix cavity. If the appendix lumen is compressed for a long time, the accumulation of secretions can cause blood supply disorders in the distal appendix wall, directly causing damage to the appendix mucosa, and inducing infection that leads to appendicitis. Additionally, gastrointestinal dysfunctions such as diarrhea and constipation can also cause spasms of the appendix muscles and vessels, leading to blood supply disorders and mucosal damage, thereby causing acute appendicitis.

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Written by Ren Zheng Xin
Gastroenterology
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Acute appendicitis complications

The main complications of acute appendicitis include: First, purulent peritonitis, due to the appendix becoming purulent and leading to perforation, pus flows into the abdominal cavity, causing diffuse peritonitis; Second, abdominal abscess, purulent appendicitis that is not treated surgically forms a capsule around the appendix, encapsulating it, and a lump can be felt on the abdominal surface; Third, internal-external fistula, if the abscess around the appendix is not drained in time, it can break through to the intestinal abdominal wall, forming a fistula.

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Written by Ren Zheng Xin
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acute appendicitis symptoms

The symptoms of acute appendicitis typically include abdominal pain at the onset of the condition, which initially occurs around the navel and then localizes to the lower right abdomen, as well as early nausea and vomiting caused by gastric spasms. Patients with more severe inflammation may also exhibit fever. If the inflammation spreads to the peritoneum, there will be tenderness at McBurney's point and rebound tenderness, along with tense abdominal muscles. Based on these symptoms, making a definitive diagnosis of acute appendicitis is not particularly difficult.

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Gastroenterology
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Which is more serious, acute appendicitis or chronic appendicitis?

The symptoms of acute appendicitis are relatively more severe because acute suppurative appendicititis can cause perforation of the appendiceal lumen. After the perforation, pus can flow into the abdominal cavity causing diffuse peritonitis, leading to abdominal muscle tension, tenderness, and rebound pain. If not treated promptly, it can lead to multiple organ failure. Chronic appendicitis is mostly due to incomplete treatment of acute appendicitis, or chronic latent appendicitis. The symptoms of chronic appendicitis are sometimes mild and the physical signs are not definite. Surgical removal of the appendix should be the first choice for treating acute appendicitis.

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How is acute appendicitis diagnosed?

The definitive diagnosis of acute appendicitis is primarily through clinical physical examination and auxiliary tests. Based on typical symptoms of acute appendicitis, such as migratory right lower abdominal pain, vomiting, nausea, fever, and a few patients may have symptoms of constipation or diarrhea. There is obvious tenderness and rebound pain when pressing on the abdomen. Additionally, an abdominal ultrasound can indicate swelling of the appendix lumen and a significant increase in appendix size. These aspects can lead to a preliminary diagnosis, and once acute appendicitis is confirmed, surgical treatment should be carried out.

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Written by Ren Zheng Xin
Gastroenterology
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The etiology of acute appendicitis

The main cause of acute appendicitis is due to the narrowing of the appendiceal lumen, which can easily lead to the obstruction of food residues and fecal masses. Following the obstruction, mucosal damage occurs, which leads to secondary infections. Additionally, neglecting regular living habits, such as overeating, excessive fatigue, and frequent heavy drinking can exacerbate or trigger acute appendicitis. Therefore, maintaining regular living habits in daily life, such as having meals at fixed times, reasonable rest and work schedules, balancing work and leisure, and engaging in appropriate outdoor activities, can play a positive role in preventing acute appendicitis.