Exercises:
1. Match the two parts of the sentences. Look at A to help you.
1. MRI provides more detailed information than CT because
2. MRI is not approved for use in
3. MRI is safer than X-rays because
4. MRI allows imaging on many planes
a) there is not radiation.
b) unlike CT.
c) of high contrast sensitivity.
d) the first three months of pregnancy.
2. Match what the radiographer says during an MRI scan with a numbered point in C.
a) You don’t need any injections.
b) I want you to lie down and just relax.
c) It’s important that you try not to move.
d) I’m going to go through your questionnaire with you.
e) It will be over in three-quarters of an hour.
f) It’s very important that you put any metal objects into this tray.
3. Match what the radiographer says during an ultrasound with a numbered point in C.
a) I’m going to put some gel on your abdomen.
b) I’d like you to lie flat on your back on the table.
c) The gel is to make sure there’s a good contact with your skin.
d) I’ll move this back and forwards to cover the whole area.
4
breathe diseased experience foreign hold informed
recovery
local
anaesthetic your
breath tissue area
discomfort
in
bodies
consent
1. I’m going to give you a ………………………….. so that you won’t feel any pain.
2. With an MRI, it’s important there are no metallic ……………………………
3. After an operation, patients are moved to a ……………………………….. to recuperate.
4. Before an endoscopy, the patient’s …………………………… must be obtained.
Unit 15 ecg
Uses of an ECG
An electrocardiogram (ECG) is a tracing, or drawing, produced by an electrocardiograph – a device which records electrical activity in the heart. An ECG can be used for:
deciding if the heart is performing normally or suffering from abnormalities, for example cardiac arrhythmia – extra or skipped heartbeats
indicating damage to heart muscle, such as heart attacks, or ischaemia of heart muscle (angina)
detecting conduction abnormalities: heart blocks and bundle branch blocks (BBB)
screening for ischaemic heart disease during an exercise tolerance test, often carried out on an exercise bike or treadmill
providing information on the physical condition of the heart, for example in patients with left ventricular hypertrophy (LVH)
detecting electrolyte disturbances, for example low plasma potassium levels.
ECG procedure
Here is an extract from a medical textbook.
A normal ECG
The picture shows an ECG tracing of a normal heartbeat showing a P wave, a QRS complex and a T wave. Each large square is equivalent to 0.2 seconds. The R-R interval gives the heart rate, in this case 75/min. In the case of abnormalities the QRS complex can be widened or too tall. The ST segment can be elevated or depressed. The T wave can be the right way up, or inverted – the wrong way up.