Procedures and treatments

Preparing a child for a procedure or treatment can be an anxious occasion. Great Ormond Street Hospital have produced a number of factsheets to help explain what will happen and what to expect.

Procedures and treatments search

Search for information on procedures and treatments at Great Ormond Street Hospital.


Echocardiograms (echo) are one of the most frequently used scans for diagnosing heart problems. An echo is a non-invasive, high-frequency ultrasound scan of the heart. It lets us evaluate the structure, function and blood flow through the heart. Your child will need to lie very still for the scan so it can be helpful to practice doing this at home beforehand.


Electrocardiograms (ECG) are one of frequently used scans for diagnosing heart problems. An ECG measures electrical activity within the heart through sticky sensor pads put on your child’s chest. The results are displayed on a screen and printed on a thin strip of paper.


An electrogastrogram (EGG) is a painless test which measures the electrical activity in the stomach, before, during and after food.This page explains about the EGG procedure, what it involves and what to expect when your child comes to Great Ormond Street Hospital (GOSH) to have it.