Causes of Pancreatitis

Written by Zhu Dan Hua

Gastroenterology

Updated on September 21, 2024

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Common causes of pancreatitis in clinical settings include biliary tract diseases, alcohol consumption, overeating, and hyperlipidemia, among others, with biliary tract diseases being the most common. Pancreatitis is generally defined as inflammatory changes in the pancreas due to self-digestion caused by various reasons. Clinical manifestations include abdominal pain, bloating, nausea, and vomiting, etc. Therefore, for patients with upper abdominal pain, it is necessary to further complete some examinations, such as liver function, amylase, lipase, abdominal ultrasound, and even abdominal CT scans, to clarify the diagnosis, which is generally straightforward for pancreatitis. The treatment of pancreatitis, in addition to symptomatic treatment, requires etiological treatment, combining different causes of pancreatitis. For instance, if caused by hyperlipidemia, lipid-lowering treatment is generally needed; if biliary tract disease is considered, active treatment of the biliary disease is required.

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Written by Li Qiang

Intensive Care Unit

1min 25sec

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How do you get acute severe pancreatitis?

There are many causes of acute severe pancreatitis, and the mechanisms of onset are not completely the same. Biliary pancreatitis is caused by small gallstones falling into the bile duct, becoming lodged at the distal end of the duct. At this time, the opening of the pancreatic duct is blocked, causing a disorder in pancreatic juice secretion, increasing pancreatic duct pressure, and spilling out of the pancreatic duct. This can corrode pancreatic cells and other abdominal organ cells. Alcohol and drug-induced pancreatitis is due to the direct damage of alcohol and drugs to the pancreatic cells, causing the leakage of pancreatic secretions. Overeating-induced pancreatitis is caused by consuming too much food at once, especially a high-fat diet, leading to a massive secretion of pancreatic juice. If there is an obstacle in the expulsion of this juice, it can also lead to pancreatitis. Hyperlipidemic pancreatitis is caused by excessively high blood lipid levels, which form blockages. These lipids obstruct the secretion of the pancreatic duct, causing pancreatitis. In all types of pancreatitis, the leakage of pancreatic secretions corrodes the pancreatic cells and these secretions enter the abdominal cavity, corroding abdominal organs and leading to a series of severe inflammatory responses and potentially leading to abdominal infections.

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Written by Wang Li Bing

Intensive Care Medicine Department

56sec

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Principles of Treatment for Severe Pancreatitis

The treatment principles for severe pancreatitis mainly include the following points: First, closely monitor the patient's heartbeat, respiration, blood pressure, blood oxygen, etc., and if possible, transfer them to the intensive care unit. Second, maintain electrolyte balance and blood volume, and actively rehydrate. Third, enhance nutritional support, which can include parenteral nutrition outside of gastrointestinal digestion. Fourth, routinely use antibiotics in severe pancreatitis to prevent infection from necrotizing pancreatitis. Fifth, reduce the secretion of pancreatic fluid, inhibit the synthesis of pancreatic enzymes, and suppress the activity of pancreatic enzymes. If the patient develops an infection associated with pancreatic necrosis, consider surgical treatment, etc.

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Written by Yang Chun Guang

Gastroenterology

1min 9sec

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How to check for pancreatitis?

Pancreatitis can cause acute abdominal pain, along with symptoms of nausea and vomiting, and severe cases can lead to hypotensive shock. In laboratory tests, the diagnosis is generally made by assessing serum or urine amylase levels. An amylase level that exceeds three times the normal value can diagnose pancreatitis. Additionally, ultrasound and CT scans can reveal an enlarged or exuding pancreas, and the presence of a small amount of fat necrosis around the pancreas can be diagnosed as pancreatitis. The onset time of serum amylase in pancreatitis varies; typically, serum amylase begins to increase between 6 and 12 hours and starts to decline after 48 hours, and can be detected within 3 to 5 days. Lipase levels typically start to rise between 24 to 72 hours and remain elevated longer, up to 7 to 10 days. Thus, lipase has diagnostic value for later stages of pancreatitis and tends to have higher specificity compared to amylase.

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Written by Huang Ya Juan

Gastroenterology

1min 51sec

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Symptoms of Pancreatitis

Pancreatitis is divided into acute pancreatitis and chronic pancreatitis. Acute pancreatitis is a condition caused by various reasons that lead to damage in the pancreatic tissue. This results in the premature activation of enzymes meant for digesting food, which instead begin to digest the pancreas itself. This “self-destructive” behavior leads to a series of consequences known as acute pancreatitis. The symptoms of acute pancreatitis primarily include abdominal pain, predominantly upper abdominal pain, which occurs suddenly and is persistent, severe, or knife-like, with intermittent exacerbation; fever, nausea, vomiting frequently, with vomitus consisting of food, bile, and even blood, and the abdominal pain does not ease after vomiting; some patients may also have jaundice, often caused by gallstones or common bile duct stones inducing pancreatitis, possibly accompanied by itching of the skin. Chronic pancreatitis, on the other hand, is not necessarily caused by repeated attacks of acute pancreatitis, but rather by various causes leading to persistent inflammatory changes in the pancreas, characterized mainly by chronic and persistent inflammation, damage, and fibrosis of the pancreatic parenchyma. This can lead to irreversible morphological changes such as dilation of the pancreatic ducts, pancreatic duct stones, or calcification. Symptoms include abdominal pain, primarily upper abdominal pain, which may radiate to the back, often triggered by alcohol consumption, overeating, a high-fat diet, or fatigue; gastrointestinal symptoms include reduced appetite, bloating, and indigestion; exocrine manifestations include diarrhea, specifically steatorrhea, where the stool contains oil droplets and often has a foul odor; there may also be weight loss, emaciation, and endocrine manifestations, such as what we commonly refer to as diabetes.

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Written by Chen Rong

Gastroenterology

1min 14sec

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How is acute pancreatitis treated?

Acute pancreatitis is classified into mild pancreatitis and severe pancreatitis depending on the severity of the condition. Mild cases often recover within a week without residual effects; severe cases are perilous with a poor prognosis, and the mortality rate ranges from 20% to 40%. Treatment for mild pancreatitis includes fasting, gastrointestinal decompression, pain relief, antibiotics, intravenous nutrition, acid suppression, enzyme inhibition, etc. In addition to the aforementioned treatments, severe pancreatitis requires strict medical monitoring to maintain electrolyte balance, early parenteral nutrition transitioning to enteral nutrition, and the use of antibiotics to reduce pancreatic fluid secretion, such as the growth inhibitor octreotide, as well as enzyme activity suppressants like gabexate. If the pancreatitis is biliary in origin, an ERCP with a sphincterotomy of the sphincter of Oddi may be performed. In case of serious complications, surgical treatment may be considered. (Medications should be used under the guidance of a doctor.)