Overview
An upper endoscopy (also called EGD or gastroscopy) is a 10–15 minute procedure where a thin, flexible camera is passed through the mouth to examine the esophagus, stomach, and the first part of the small intestine (duodenum). It's used to investigate heartburn, swallowing problems, abdominal pain, anemia, or suspected ulcers — and it can take biopsies to test for H. pylori, celiac disease, or pre-cancerous changes (Barrett's esophagus). You'll be sedated through an IV and feel almost nothing.
Common Reasons for an EGD
Persistent heartburn or reflux not responding to medication
Difficult or painful swallowing
Unexplained upper abdominal pain or nausea
Iron-deficiency anemia or upper-GI bleeding
Suspected H. pylori infection or stomach ulcer
Investigation for celiac disease
Surveillance for Barrett's esophagus
Before Your Procedure
Fast for at least 8 hours before your appointment — no food, milk, or juice
You may sip a small amount of water until 4 hours before
Take essential morning medications with a small sip of water unless told otherwise (skip diabetes meds the morning of)
Discuss blood thinners (aspirin, warfarin, clopidogrel, NOACs) with your doctor at least a week before
Tell us about allergies, heart or lung problems, and any prior reactions to sedation
Arrange an adult driver — you cannot drive for 24 hours after sedation
During & After
You'll lie on your left side; a soft mouth guard protects your teeth
Sedation works within seconds — most patients don't remember the procedure
A mild sore throat for a few hours is normal
Wait for the sedation to wear off (60–90 minutes) before going home
Resume eating with light foods 30–60 minutes after, once swallowing feels normal
Avoid alcohol, driving, and important decisions for 24 hours
Visual results are explained before you leave; biopsy or H. pylori results follow in 5–10 days
When to Call Us After
Call us if you have severe chest or abdominal pain, fever above 38°C, persistent vomiting (especially with blood), shortness of breath, or trouble swallowing that is worse than before. A mild sore throat and bloating are normal and resolve within 24 hours.
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