Colon Entonox – Advice Sheet

  • Reference Number: HEY-850/2016
  • Departments: Endoscopy

Patient endoscopy report

Patient name: ______________________________________________________________________

Hospital number: ____________________________     Date: __________________________

(Nursing staff, please delete/indicate as appropriate findings from the endoscopy report.)

During the test the endoscopist found you had:



  • You have been spoken to by the endoscopist regarding your diagnosis.
  • Biopsies have been taken/polyps have been removed. Results take 6 to 8 weeks to report on and will be sent to your Consultant.
  • You have been given an information leaflet.
  • It is necessary for you to have this procedure again. An appointment has been/will be made for you in: ______________________________________________________
  • A clinic appointment with your consultant will be made for you and will arrive in the post.
  • You have been referred to: ________________________________________________________
  • A follow up appointment is not necessary.
  • You have been given a letter for your GP to obtain a prescription.

If you have any questions, please ask the nursing staff who will be happy to explain anything you are unsure of.

Completed by: _________________________________________________    Signed: ______________________________________

Useful information following colonoscopy

When can I eat and drink?

You may eat and drink as normal.

Are there any after effects of the procedure?

Entonox leaves the system very quickly and as long as you feel well with no dizziness, pain or disorientation, or any other symptoms which may impair physical or cognitive function that may impact you driving; you should be able to drive within 30 minutes after Entonox inhalation.

You may have some mild to moderate windy pains in your abdomen due to wind in your bowel. If you had a polyp removed or a biopsy taken you may experience a little bleeding.

Although unpleasant these are normal and nothing to worry about, and should stop within 24 hours as you move around.

What if I feel unwell after the test?

If you experience any severe abdominal pain, vomiting, or you pass more than an egg cup full of red blood, please seek help immediately.

The Endoscopy Unit at Castle Hill Hospital is open Monday to Friday, 8:00am to 6:00pm on telephone number (01482) 622065.

Outside of these hours, please ring Ward 100 at Hull Royal Infirmary on telephone number (01482) 675100, or ring your own GP or Emergency Department.

Please do not hesitate to contact us if there is anything you are worried about after the test.

The full results of your examination will be discussed at your next outpatient appointment.

Under the General Data Protection Regulation and the Data Protection Act 2018 we are responsible for maintaining the confidentiality of any information we hold about you. For further information visit the following page: Confidential Information about You.

If you or your carer needs information about your health and well-being and about your care and treatment in a different format, such as large print, braille or audio, due to disability, impairment or sensory loss, please advise a member of staff and this can be arranged.