How to check for pancreatitis?

Written by Yang Chun Guang
Gastroenterology
Updated on September 30, 2024
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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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The difference between severe pancreatitis and mild pancreatitis

Generally speaking, mild pancreatitis is just a local inflammation of the pancreas, usually manifested as upper abdominal pain, nausea, vomiting, and bloating — symptoms of the gastrointestinal tract. Severe pancreatitis, however, is much more serious than mild pancreatitis. In severe pancreatitis, not only is the pain in the local pancreas area more intense and the abdominal bloating more pronounced, but there is also a lot of effusion accumulating in the abdomen. Severe pancreatitis can also affect many other organs, such as the lungs, which are most commonly affected. It can lead to patients developing acute respiratory distress syndrome, characterized by severe hypoxemia, with many patients requiring mechanical ventilation treatment. Another organ that is commonly affected is the kidney, with many patients with severe pancreatitis experiencing acute renal failure, reduced urine output, or even anuria. Severe pancreatitis can also affect the heart, brain, and other organs, leading to functional abnormalities in these organs. Therefore, besides affecting the local pancreas, severe pancreatitis can involve other important organs, resulting in multiple organ dysfunctions.

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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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Is it okay to drink alcohol occasionally with pancreatitis?

Patients with pancreatitis absolutely must not drink alcohol, as it can lead to malnutrition and cause damage to organs such as the liver and pancreas, thereby reducing the patient's immunity. Even a single drinking session can provoke an episode of acute pancreatitis. Therefore, patients with pancreatitis must decidedly abstain from alcohol. Additionally, they should avoid overeating, as it can disturb gastrointestinal function, hinder normal bowel movements and emptying, and obstruct the normal secretion of bile and pancreatic juice, thus triggering a recurrence of pancreatitis.

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Causes of Pancreatitis

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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How to check for pancreatitis?

The examination of pancreatitis requires laboratory tests and imaging examinations to assess the severity of the condition and to identify the cause. Elevated amylase and lipase levels more than three times the normal values, increased white blood cells, elevated C-reactive protein, increased blood sugar, elevated transaminases and bilirubin, decreased albumin, increased urea nitrogen and creatinine, decreased blood oxygen partial pressure, decreased blood calcium, elevated triglycerides, and abnormalities in blood sodium, potassium, and pH values all reflect the severity of pancreatitis. Abdominal ultrasound is a routine initial screening imaging examination for acute pancreatitis, and abdominal CT is helpful in confirming the presence of pancreatitis, peripancreatic inflammatory changes, and pleural effusion. Enhanced CT is beneficial in determining the extent of pancreatic necrosis and is generally performed about a week after the onset of the condition. However, when searching for the cause of pancreatitis, the sensitivity and accuracy of CT are not as good as MRI, therefore further MRI should be conducted to investigate causes related to the bile duct and to determine the cause of the pancreatitis.