Gastroscopy — oral and nasal endoscopy
Gastroscopy is the most precise investigation of the oesophagus, stomach and duodenum. At EndoCap we offer both classic oral gastroscopy and gentle nasal gastroscopy through the nose — with a consultant surgeon, no wait and no referral.
What is a gastroscopy?
A gastroscopy — also called an endoscopic examination of the stomach — is an investigation in which the doctor passes a thin, flexible endoscope with a small camera down through the oesophagus into the stomach and further into the first part of the small intestine (the duodenum). It provides a direct view of the mucosa and allows tissue samples (biopsies) to be taken at the same time.
Gastroscopy is the most reliable way to diagnose reflux, ulcers, gastritis, coeliac disease, Barrett's oesophagus and oesophageal cancer. The procedure itself typically takes 5–10 minutes.
Oral or nasal gastroscopy?
Oral gastroscopy
The endoscope is passed through the mouth. We offer local anaesthetic throat spray and, on request, light intravenous sedation so you are relaxed during the procedure. After sedation you must not drive the same day.
Nasal gastroscopy (through the nose)
Nasal gastroscopy uses a considerably thinner endoscope passed through one nostril. It rarely triggers the gag reflex and needs no sedation — you can drive yourself and go straight to work afterwards. Many patients find nasal gastroscopy markedly more comfortable than the oral variant.
When is gastroscopy indicated?
- Persistent heartburn, regurgitation and reflux (GERD)
- Abdominal pain or dyspepsia that does not resolve
- Difficulty swallowing (dysphagia) or painful swallowing
- Unexplained nausea, vomiting or weight loss
- Iron-deficiency anaemia or black/bloody stools
- Suspected ulcer, coeliac disease or Barrett's oesophagus
- Follow-up after previous findings or treatment
Preparation
- Fast (no food) for 6 hours before the procedure
- Clear fluids may be consumed up to 2 hours before
- Regular medication may usually be taken with a little water
- Blood-thinning medication: discussed individually before booking
Side effects and sedation
Gastroscopy is a very safe procedure. After an oral gastroscopy there may be mild throat soreness for a few hours. Serious complications (bleeding, perforation) are very rare. With sedation you need someone to accompany you home and must not drive for the rest of the day.
Short wait and fast report
At EndoCap you typically get an appointment within 2 weeks; the examination and any biopsies are performed the same day and a written report with a treatment plan is sent within 5 working days. The clinic is led by a consultant surgeon, so diagnostics and follow-up are handled in one place — you do not need onward referral.