Appendicitis

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Written by Ren Zheng Xin
Gastroenterology
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Early symptoms of acute appendicitis

The symptoms of the early stage of acute appendicitis primarily include vague abdominal pain, initially across the abdomen, then transitioning around the belly button, and after several hours, shifting to the lower right abdomen where the pain becomes localized. The early symptoms of acute appendicitis are not typically distinctive, with the onset being quite sudden, accompanied by severe abdominal pain, vomiting, and fever. Based on these typical clinical manifestations, diagnosing acute appendicitis is not difficult. Clinically, the main treatment is the surgical removal of the appendix, with laparoscopic appendectomy being the more common practice nowadays. This method involves less bleeding during the operation and a quicker post-operative recovery.

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Written by Ren Zheng Xin
Gastroenterology
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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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Acute Appendicitis Etiology

The cause of acute appendicitis is primarily bacterial infection of the appendiceal lumen due to various reasons. The appendix itself is a narrow tube connected to the cecum. If a fecalith falls into the lumen, it can cause obstruction of the appendiceal lumen, leading to an increase in intra-luminal pressure and circulatory disturbances in the appendiceal wall. At this time, the mucosa is susceptible to damage, and bacterial invasion of the wall can cause infections of varying degrees. Additionally, gastrointestinal dysfunction, such as diarrhea or constipation, can also cause spasms of the appendiceal vessels, leading to blood supply disturbances and resulting in acute inflammation.

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Written by Ren Zheng Xin
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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Written by Ren Zheng Xin
Gastroenterology
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What is acute appendicitis?

Acute appendicitis refers to the acute inflammation occurring in the lumen of the appendix, which is caused by the narrowing or blockage and subsequent infection of the lumen. The primary symptom is abdominal tenderness and rebound pain, accompanied by nausea, vomiting, and fever. During the acute phase, blood tests often show an elevated white blood cell count. The main treatment is surgical removal of the appendix, with laparoscopic appendectomy being the commonly used method. This is also a minimally invasive approach to appendicitis treatment. Postoperative care is important, and it is advised to fast on the day of the surgery. Once gas passes through the rectum, a liquid diet may be resumed.

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Written by Ren Zheng Xin
Gastroenterology
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Acute appendicitis nursing care

The nursing care for acute appendicitis includes preoperative care and postoperative care. Before surgery and on the day of surgery, fasting is required; the patient should not eat anything. At the same time, it is important to soothe the patient's emotions. If the pain is very severe, sedative analgesics can be used. After the surgery, dietary care should be intensified. On the first day after the surgery, a liquid diet should be administered. After bowel gas is passed, a normal diet can be resumed on the third to fourth day. It is important to monitor vital signs and the condition of the surgical incision to prevent infection. The patient can engage in activities out of bed 24 hours after surgery. Elderly patients should be assisted in expectoration to prevent dependent pneumonia.

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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
Gastroenterology
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Anesthesia methods for acute appendicitis

The anesthesia method for acute appendicitis is related to the type of surgical treatment. If laparoscopic appendectomy is chosen, general anesthesia is usually required. If a traditional McBurney point incision is used for appendectomy, spinal anesthesia is primarily chosen. Additionally, after anesthesia, gastrointestinal function will be somewhat restricted. Until there is no gas or bowel movement from the rectum, patients should not eat after surgery. Only when the rectum starts to pass gas, indicating that gastrointestinal function is beginning to recover, can the patient begin to consume soft foods.

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Written by Ren Zheng Xin
Gastroenterology
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Causes of Acute Appendicitis

The causes of acute appendicitis mainly include two types: one is the obstruction of the appendiceal lumen, and the other is infection within the appendiceal lumen. The appendix is a tube that communicates with the cecum. If it is blocked by fecoliths or fecal masses, it can lead to increased pressure inside the appendiceal lumen, damage to the mucosa, and bacterial invasion causing infection, which directly leads to acute inflammation. At the same time, gastrointestinal dysfunction can also cause spasm of appendix muscles and blood vessels, leading to blood supply disturbances. Irregular lifestyle habits, overeating, and engaging in vigorous activities after meals can all trigger acute appendicitis.

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Written by Ren Zheng Xin
Gastroenterology
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The Difference Between Acute and Chronic Appendicitis

The differences between acute appendicitis and chronic appendicitis mainly lie in the onset of the condition, physical signs, and laboratory tests. First, regarding the onset of the condition, acute appendicitis occurs suddenly and can involve abrupt abdominal pain, whereas chronic appendicitis often manifests as fixed tenderness in the lower right abdomen and the symptoms are not particularly typical. In terms of physical signs, acute appendicitis presents with migratory pain in the lower right abdomen, while chronic appendicitis generally does not involve rebound pain. Thirdly, concerning auxiliary examinations, acute appendicitis shows a significant increase in the white blood cell count during an attack, whereas in chronic appendicitis, the white blood cell count may appear normal.