{"id":4910,"date":"2024-12-18T00:07:00","date_gmt":"2024-12-18T00:07:00","guid":{"rendered":"https:\/\/www.osmosis.org\/blog\/?p=4910"},"modified":"2025-10-01T11:38:23","modified_gmt":"2025-10-01T19:38:23","slug":"usmle-step-1-question-of-the-day-pancreatitis","status":"publish","type":"post","link":"https:\/\/www.osmosis.org\/blog\/usmle-step-1-question-of-the-day-pancreatitis","title":{"rendered":"USMLE\u00ae Step 1 Question of the Day: Pancreatitis"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_80 ez-toc-wrap-center counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">In This Article<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.osmosis.org\/blog\/usmle-step-1-question-of-the-day-pancreatitis\/#The_correct_answer_to_todays_USMLE%C2%AE_Step_2_CK_Question_is%E2%80%A6\" >The correct answer to today&#8217;s USMLE\u00ae Step 2 CK Question is&#8230;<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.osmosis.org\/blog\/usmle-step-1-question-of-the-day-pancreatitis\/#Incorrect_Answer_Explanations\" >Incorrect Answer Explanations<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.osmosis.org\/blog\/usmle-step-1-question-of-the-day-pancreatitis\/#Main_Explanation\" >Main Explanation<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.osmosis.org\/blog\/usmle-step-1-question-of-the-day-pancreatitis\/#Major_Takeaway\" >Major Takeaway<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.osmosis.org\/blog\/usmle-step-1-question-of-the-day-pancreatitis\/#Want_to_learn_more_about_this_topic\" >Want to learn more about this topic?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.osmosis.org\/blog\/usmle-step-1-question-of-the-day-pancreatitis\/#References\" >References<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\"><strong><em>Today, let&#8217;s focus on USMLE Step 1, with a question on acute pancreatitis. Can you recommend the appropriate diagnostic investigations, interpret the findings to establish a diagnosis, and describe the essential treatment options? Are you able to recall and recognize the clinical features and complications associated with this condition? Sharpen your understanding of this important topic.<\/em><\/strong><strong><em>&nbsp;<br><\/em><\/strong><br>A 44-year-old man comes to the emergency department with abdominal pain and nausea for the past 24 hours. The pain started a few hours after dinner, and he describes it as a constant pain in the upper part of his abdomen that radiates to his back and flanks. The patient also reports nausea, intermittent vomiting, and abdominal distention. Family history is significant for recurrent episodes of pancreatitis in his father and paternal uncle. He reports drinking an average of 2 alcoholic drinks per week. His temperature is 37.7\u00baC (99.9\u00baF), pulse is 92\/min, respirations are 20\/min, peripheral oxygen saturation is 96%, and blood pressure is 149\/94 mmHg. He appears distressed and anxious. Abdominal examination shows tenderness and rigidity over the epigastric and periumbilical regions. Bowel sounds are diminished. No bruising of the umbilicus or flanks is seen.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Which of the following laboratory results is the most specific in diagnosing this patient\u2019s condition?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A. Serum amylase &gt; 3 times the upper limit of normal<br><br>B. Serum lipase &gt; 3 times the upper limit of normal<br><br>C. Serum bilirubin &gt; 4.0 mg\/dL<br><br>D. Elevated blood alcohol level<br><br>E. Blood urea nitrogen (BUN) level &gt; 22 mg\/dL<\/strong><strong>&nbsp;&nbsp;<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Scroll down for the correct answer!<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"The_correct_answer_to_todays_USMLE%C2%AE_Step_2_CK_Question_is%E2%80%A6\"><\/span>The correct answer to today&#8217;s USMLE\u00ae Step 2 CK Question is&#8230;<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B. Serum lipase > 3 times the upper limit of normal\u00a0<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Before we get to the&nbsp;<strong>Main Explanation<\/strong>, let&#8217;s see why the answer wasn&#8217;t A, C, D, or E. Skip to the bottom if you want to see the correct answer right away!<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Incorrect_Answer_Explanations\"><\/span>Incorrect Answer Explanations<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A. Serum amylase > 3 times the upper limit of normal<br><\/strong><br><strong>Incorrect:<\/strong>\u00a0Although serum amylase elevation may be used to show biochemical evidence of acute pancreatitis, it is affected by serum pH, lipids, and bowel inflammation and is prone to false elevations or spuriously normal results. Therefore, it&#8217;s not the most specific way to diagnose this patient\u2019s acute pancreatitis.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C. Serum bilirubin &gt; 4.0 mg\/dL<br><br>Incorrect:&nbsp;<\/strong>Although hyperbilirubinemia may occur in up to 10% of patients with acute pancreatitis, bilirubin elevations are not specific to pancreatitis and do not contribute to the diagnosis. Serum bilirubin levels return to normal in 4-7 days.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>D. Elevated blood alcohol level<br><br>Incorrect:&nbsp;<\/strong>Although alcohol abuse may cause acute pancreatitis in a dose-dependent manner, this patient only consumes two beers\/week, which is unlikely to cause acute pancreatitis. Instead, his underlying familial hypertriglyceridemia is likely the cause of pancreatitis.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>E. Blood urea nitrogen (BUN) level &gt; 22 mg\/dL<br><br>Incorrect:<\/strong>&nbsp;Azotemia (BUN &gt;22 mg\/dL) suggests more severe pancreatitis that is causing vascular permeability and intravascular volume depletion or hemorrhage. However, azotemia is not specific for acute pancreatitis and is not included in the diagnostic criteria.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Main_Explanation\"><\/span>Main Explanation<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This patient is presenting with&nbsp;constant&nbsp;abdominal pain&nbsp;localized in the&nbsp;epigastric region&nbsp;that radiates to the&nbsp;back, highly suggestive of&nbsp;acute pancreatitis. Acute pancreatitis occurs when pancreatic enzymes are inappropriately activated, leading to tissue damage and an inflammatory response. This patient has a family history of recurrent pancreatitis in his father and paternal uncle, suggesting the diagnosis of&nbsp;familial hypertriglyceridemia, an&nbsp;autosomal dominant&nbsp;condition. The high concentration of serum triglycerides can cause acute pancreatitis because when pancreatic cells encounter triglycerides, they release lipase to break the triglycerides down into free fatty acids; excess free fatty acids can subsequently injure the pancreas.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The most common causes of pancreatitis are gallstones and alcohol toxicity. The other causes of pancreatitis can be easily remembered by the mnemonic&nbsp;\u201cI GET SMASHED\u201d:&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter\"><img decoding=\"async\" src=\"https:\/\/osmose-it.s3.amazonaws.com\/hBP7p4YKQJ2f_qEyR87_o9UFTf6VKI9_\/_.png\" alt=\"Causes of Acute Pancreatitis: Idiopathic, Gallstones, Ethanol, Trauma (penetrating), Steroids, Mumps, Autoimmune, Scorpion Sting, Hyperlipidemia\/Hypercalcemia, Endoscopic Retrograde Cholangiopancreatography (ECRP), Drugs\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">To make a&nbsp;diagnosis of acute pancreatitis&nbsp;(from any cause), one needs&nbsp;2 out of 3&nbsp;of the following criteria:&nbsp;&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>clinical symptoms, such as persistent, severe, epigastric pain with tenderness on palpation&nbsp;<\/li>\n\n\n\n<li>laboratory&nbsp;studies demonstrating serum amylase or lipase greater than 3 times the upper limit of normal;&nbsp;lipase&nbsp;remains elevated for a longer period of time and has a&nbsp;higher specificity&nbsp;as compared with amylase&nbsp;<\/li>\n\n\n\n<li>imaging&nbsp;(computed tomography, magnetic resonance (MR), ultrasonography) showing focal or diffuse enlargement of the pancreas&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">In this patient with a characteristic clinical presentation, the demonstration of an elevated serum amylase or lipase level will confirm the diagnosis of acute pancreatitis. However, serum amylase may be spuriously normal in patients with hypertriglyceridemia and spuriously elevated in patients with acidemia (arterial pH \u2264 7.32); therefore, serum lipase is the preferred laboratory test for diagnosing acute pancreatitis.&nbsp;It is important to note, however, that there is&nbsp;no correlation&nbsp;between the&nbsp;severity&nbsp;of pancreatitis and the degree of serum lipase and amylase elevations. Additionally, an elevation in serum triglyceride levels is not sufficient to diagnose acute pancreatitis. Hyperbilirubinemia, leukocytosis, azotemia, and hypoglycemia are suggestive of more severe disease but are not themselves diagnostic of acute pancreatitis.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Major_Takeaway\"><\/span>Major Takeaway<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Acute pancreatitis&nbsp;is characterized by epigastric abdominal pain radiating to the back, often with nausea and vomiting. The diagnosis is made by meeting two of the three clinical, laboratory, and imaging criteria. The preferred diagnostic laboratory test for acute pancreatitis is a&nbsp;serum lipase greater than three times the upper limit of normal.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Want_to_learn_more_about_this_topic\"><\/span>Want to learn more about this topic?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Watch the Osmosis video:\u00a0<a href=\"https:\/\/www.osmosis.org\/learn\/Pancreatitis:_Pathology_review\">Pancreatitis: Pathology review<\/a><\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"References\"><\/span>References<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Conwell, D. L., Banks, P. A., &amp; Greenberger, N. J. (2018). Acute and Chronic Pancreatitis. In J. L. Jameson, A. S. Fauci, D. L. Kasper, S. L. Hauser, D. L. Longo, &amp; J. Loscalzo (Eds.),&nbsp;Harrison\u2019s Principles of Internal Medicine&nbsp;(20th ed.). Retrieved from<a href=\"https:\/\/doi.org\/accessmedicine.mhmedical.com\/content.aspx?aid=1160016107\" target=\"_blank\" rel=\"noreferrer noopener\">&nbsp;<\/a><a href=\"https:\/\/doi.org\/accessmedicine.mhmedical.com\/content.aspx?aid=1160016107\" target=\"_blank\" rel=\"noreferrer noopener\">accessmedicine.mhmedical.com\/content.aspx?aid=1160016107<\/a>&nbsp;<\/li>\n\n\n\n<li>Toouli J, Brooke-Smith M, Bassi C, et al. Guidelines for the management of acute pancreatitis.&nbsp;J Gastroenterol Hepatol. 2002;17 Suppl:S15\u2010S39. doi:10.1046\/j.1440-1746.17.s1.2.x<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"https:\/\/osmosis.org\/create\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" src=\"https:\/\/osmose-it.s3.amazonaws.com\/8mTH4ZwERL2SwHRK7LCsQLgVSRKF77Xd\/_.png\" alt=\"\"\/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em>Want more USMLE\u00ae Step 1-style practice questions? Try Osmosis today! Access your\u00a0<a href=\"https:\/\/www.osmosis.org\/create\" target=\"_blank\" rel=\"noreferrer noopener\">free trial<\/a>\u00a0and find out why millions of current and future clinicians and caregivers love learning with us.<\/em><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Today, let&#8217;s focus on USMLE Step 1, with a question on acute pancreatitis. Can you recommend the appropriate diagnostic investigations, interpret the findings to establish a diagnosis, and describe the essential treatment options? Are you able to recall and recognize the clinical features and complications associated with this condition? Sharpen your understanding of this important [&hellip;]<\/p>\n","protected":false},"author":202,"featured_media":4911,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[27,20,16,1366,1369,44],"tags":[],"class_list":["post-4910","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-medicine","category-exam-prep","category-do","category-questions","category-step-1-questions","category-step-1"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>USMLE\u00ae Step 1 Question of the Day: Pancreatitis - Osmosis Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.osmosis.org\/blog\/usmle-step-1-question-of-the-day-pancreatitis\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"USMLE\u00ae Step 1 Question of the Day: Pancreatitis - Osmosis Blog\" \/>\n<meta property=\"og:description\" content=\"Today, let&#8217;s focus on USMLE Step 1, with a question on acute pancreatitis. 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