Get the Right Care

Types of Surgeries

Endoscopy – Gastroscopy


What is a gastroscopy? A gastroscopy is a sort of test that is used to see inside your oesophagus, stomach, and first part of your small intestine. This is done by inserting a tube containing a flexible camera (called a scope or endoscope) down your mouth and into your stomach. The insides of your stomach are then shown on a screen for the doctor to examine and analyze.


A gastroscopy is largely used to determine whether or not there are changes or abnormalities to the gullet, stomach, or small intestine. Doctors will check for symptoms like bleeding, as well as look for ulcers, hernias, blockages, polyps, or signs of cancer (tumors). Usually, it is recommended that adults start regularly getting gastroscopies at the age of 45, but they are also used to screen patients before surgery. For example, if a patient chooses to undergo bariatric surgery, a gastroscopy will be prescribed before the surgery to ensure the safety of the patient and a smooth surgical procedure without complications.

All surgeries, whether they be big or small, carry risks. For a gastroscopy, complications are exceedingly rare, especially if you are under the supervision of a trained professional. Complications for this procedure typically include:


Risks of Surgery

  • Bleeding, if a biopsy is performed.
  • Allergic reactions to sedatives.
  • Abdominal pain or swelling.
  • Fever.
  • Headaches and drowsiness after the surgery.
  • Tearing (perforation) of the lining of your oesophagus.

What to expect prior to your gastroscopy

In order to undergo a gastroscopy, it is important you follow the careful instructions of your healthcare team. We will instruct you to prepare your bowels before your gastroscopy procedure. If your stomach and bowels are not clean, your gastroscopy will not be successful – the cleaner your digestive system is, the better chance our team will have at finding and diagnosing abnormal symptoms. Therefore, we advise patients to eat a low-fiber diet a few days before the surgery, and no solid food or alcohol the day before the surgery. You may drink clear liquids – water, black coffee, tea, soft drinks, juice and broths – as well as eat foods like JELL-O and Popsicles. You should not eat or drink at least four hours before the procedure. If you are undergoing general anesthesia, do not drink anything after midnight on the night preceding your gastroscopy.

You may need to take antibiotics before surgery. Routine blood work is usually not needed but may be ordered prior to surgery based on the patient's age and the presence of any existing medical problems.

A gastroscopy is a minor kind of surgery, and is done on an outpatient basis (you will be able to go home after the surgery is completed). Before your surgery, a nurse or doctor will plan the and clean the site, and consult with you for any questions you may have. General anesthesia will then be administered under the supervision of an anesthesiologist and your surgeon.

The procedure itself usually takes 15-60 minutes to perform. Typically, your doctor will give you a heads up on how long the procedure should last.

The procedure

Patients will be placed on their back on the operating table. The endoscope will then be slowly inserted into the mouth and slowly advanced down the throat and into the stomach. Once the start of the small intestine (the duodenum) is reached, the endoscope will slowly be withdrawn. While this is occurring, your doctor will be carefully examining the lining of your digestive tract on a separate screen.

If, for whatever reason, your stomach cannot be visualized, you may be asked to undergo an additional gastroscopy at a later date. Your doctor may also decide to order an X-ray or CT scan of your colon.

After the procedure

Recovery time for a gastroscopy will vary, but you should feel back to normal within a few hours. Residual pain may last up to a week after surgery. Soreness is common, however let your doctor know if you experience swelling or excessive pain.

You will need to arrange for a ride home the day of your surgery and we recommend someone stay with you for the first 24 hours at home. When you leave the facility after surgery, we will want you to go home and rest. Avoid making any other plans on the day of your surgery. Starting the following day, you can increase your activity as you feel up to it.

You will likely be given a prescription for pain medication following your surgery. The recovery nurse will discuss a pain control plan following surgery specific to you and your needs. Oftentimes we will recommend taking Tylenol and Advil (same as Motrin, Ibuprofen) or Aleve in addition to the narcotic pain medication.

At this time, you may also return to your normal eating habits. However, if polyps were removed or other special manipulations were performed, a certain diet may be prescribed.

Did you know we have a support group?

Your questions and concerns have most likely been asked and answered in our support group. Moderated by our dietitians, nurses, and staff. We provide you with reliable patient education and resources to help you throughout this life-changing process.