Gastroscopy Overview

Gastroscopy is a medical examination method that uses an endoscope to observe the inside of the esophagus, stomach and duodenum. It is mainly used to diagnose digestive tract diseases (such as gastritis, ulcers, tumors, etc.) or perform biopsy and treatment. During the examination, the doctor inserts a thin flexible tube (gastroscope) with a camera and light source through the mouth to display images of the digestive tract in real time. The main content structure includes:Inspection purpose(diagnosis or treatment),Applicable people(Patients with suspected digestive tract diseases),Operation process(Preoperative preparation, intraoperative cooperation, postoperative precautions) andRisks and Limitations(such as minor discomfort or rare complications).

Detailed process of gastroscopy

Fasting is required for 6-8 hours before the examination to avoid food residues affecting the observation. Patients usually take a local anesthetic by mouth to reduce the throat reflex, and may be given an injection of sedative if necessary. During the examination, the doctor slowly advances the gastroscope and observes the status of the mucosa through the screen. If abnormalities are found, samples can be taken for biopsy or direct treatment (such as hemostasis, removal of polyps). The whole process takes about 5-15 minutes, and the patient needs to stay in a side-lying position and cooperate with the swallowing movements. Some people may feel bloated or nauseous, but most people tolerate it.

Applicable symptoms and disease diagnosis

Gastroscopy is suitable for repeatedUpper abdominal pain,acid reflux,Vomiting blood,black stoolordifficulty swallowingand other symptoms, can clearly diagnose gastroesophageal reflux disease, peptic ulcer, gastric cancer, etc. In addition, high-risk groups (such as those with a family history of gastric cancer and those with long-term Helicobacter pylori infection) can be screened regularly. Gastroscopy can also perform endoscopic treatment, such as stent placement and resection of early-stage tumors, which has dual value in diagnosis and treatment.

Risks and Cautions

Gastroscopy is generally safe, but there may beThroat discomfort,temporary bloatingWait for minor reactions, and in rare cases, perforation or bleeding may occur (the probability is less than 0.1%). You need to avoid eating and drinking for 1-2 hours after surgery to avoid aspiration; if a biopsy is taken, you should eat warm, cool, soft food. Patients with severe cardiopulmonary disease need to assess risks, and pregnant women or those with coagulation disorders should use with caution. Choosing a formal medical institution can minimize the risk.

Summary and suggestions

Gastroscopy is the "gold standard" for the diagnosis of digestive tract diseases, and it can visually detect lesions and intervene. Despite the slight discomfort, its accuracy and therapeutic value are irreplaceable. It is recommended that high-risk groups or those with persistent symptoms undergo timely examination and cooperate with medical guidance. Modern painless gastroscopy technology (such as intravenous anesthesia) further improves comfort and patients do not need to be unduly afraid.

Citing sources

1. "Guidelines for Diagnosis and Treatment of Digestive Endoscopy in China" (compiled by the Digestive Endoscopy Branch of the Chinese Medical Association)
2. World Gastroenterology Organization (WGO) Clinical Practice Recommendations
3. Expert opinion: Zhang Moumou, chief physician of the Department of Gastroenterology, Peking Union Medical College Hospital
4. Product data: technical information disclosed on each brand’s official website