Nausea and Vomiting

Nausea and Vomiting is a topic covered in the Washington Manual of Medical Therapeutics.

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General Principles

  • Nausea and vomiting may result from side effects of medications, systemic illnesses, central nervous system (CNS) disorders, and primary GI disorders.
  • Vomiting that occurs during or immediately after a meal can result from acute pyloric stenosis (e.g., pyloric channel ulcer) or from functional disorders, while vomiting within 30–60 minutes after a meal may suggest gastric or duodenal pathology. Delayed vomiting of undigested food from a previous meal can suggest gastric outlet obstruction or gastroparesis.
  • Symptoms of gastroparesis may be indistinguishable from chronic functional nausea and vomiting with normal gastric emptying.1

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