The Physicians' Clinic

Gastroscopy / Upper GI endoscopy
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020 3993 8581

020 3993 8581

Endoscopy at The Princess Grace Hospital

Gastroscopy and upper GI endoscopy at The Physicians’ Clinic

A gastroscopy (also called an upper GI endoscopy or OGD) is a quick, safe procedure that allows us to examine your oesophagus, stomach and the first part of your small bowel (duodenum) to investigate symptoms such as heartburn, reflux, indigestion, unexplained upper abdominal pain and iron deficiency anaemia. A thin, flexible tube with a camera is gently passed through your mouth, giving clear views of the oesophagus, stomach and small bowel. Sometimes, we might also take small biopsies as part of the procedure.

To ensure the procedure is safe and effective, it’s important to follow the following steps:

  • Tell us about all medications you’re taking, especially blood thinners (for example: clopidogrel, warfarin, heparin) or iron supplements.
  • Usually you’ll need to stop clopidogrel/iron 7 days before the procedure and warfarin 5 days before (you’ll need to confirm with your GP/cardiologist to see if you need replacement medication).
  • Avoid eating for 6 hours before the procedure. Clear fluids are allowed up to 2 hours beforehand.

We ask that you arrive 30 minutes before your gastroscopy. We aim to run on time, but if there’s a delay, we’ll keep you updated. Here’s what to expect:

  • Arrival: A nurse will ask about your medical history, medications and any allergies.
  • Preparation: We’ll ask you to remove your glasses, contact lenses and dentures if you have them. If you’ve chosen sedation, we’ll place a small cannula in your arm or hand.
  • Consent: We’ll check you understand the procedure and ask for written consent.
  • Procedure: We may use a throat spray to numb your throat, or sedation to help you relax. The endoscope won’t affect breathing, and we may take a biopsy – this is a painless procedure and we’ll keep you fully informed at all times. 

Gastroscopy usually takes less than 10 minutes and, while it isn’t painful, it can trigger a gag reflex. We can offer sedation if you’d like it.

After your gastroscopy, it’s important to allow your body some time to recover safely:

  • Your throat may feel numb or sore for a short while.
  • If you had sedation, you should be accompanied home and avoid driving, operating machinery or making important decisions for 24 hours.
  • You should wait at least an hour before eating or drinking.
  • While your consultant may discuss initial findings at the time, biopsy results can take up to four working days.

Gastroscopy is extremely safe, and most people experience no complications. Minor side-effects can include a sore throat, mild bloating or slight discomfort. Serious complications are rare, but it’s important to be aware and seek advice promptly if needed. Contact us if you notice:

  • Severe or persistent pain
  • Light-headedness or fainting
  • Vomiting blood
  • Passing blood or black stools
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