Chorionic Villous Sampling
What is chorionic villous sampling? Chorionic villous sampling (CVS) is offered from week 11 of pregnancy to women who are…Read more
There are no prerequisites for this study.
This study may not be suitable for pregnant women. The benefit versus risk should be discussed with the nuclear medicine specialist.
Women who are breastfeeding and people who are the primary or sole carer for small children may need to make special preparations after the test to stop breastfeeding for a short time and to avoid close contact with young children due to the small amount of radioactivity released for a while after the test. Patients should discuss this with their referring doctor or the nuclear medicine practice where they will have the test for details. See nuclear medicine for further information about the precautions to take with nuclear medicine studies for breastfeeding patients and those in close contact with children.
Known allergy to any of the pharmacological stress agents is an obvious contraindication.
More specific contraindications for dipyridamole and adenosine:
Caution is exercised when using dobutamine in patients with suspected tendency to ventricular tachyarrythmias and in patients with atrial tachyarrythmias (particularly if not on anticoagulation).
There are no relative contraindications for the NM Cardiac Stress Test. Even in claustrophobic and obese patients, whose weight exceeds the limits of the imaging bed, can be scanned with patient sitting up and 2 dimensional (planar instead of tomographic) images acquired.
The contraindications of the pharmacological stress agents are outlined above.
The likelihood of an adverse reaction to the radiopharmaceutical is very remote, in the order of 1 in 10,000. The likelihood of a serious allergic event is even less likely. The adverse effects of the pharmacological stress agents are outlined above.
The alternatives to NM cardiac stress tests are:
Relevant to clinical practice, the NM cardiac stress test:
Page last modified on 15/10/2016.
RANZCR® is not aware that any person intends to act or rely upon the opinions, advices or information contained in this publication or of the manner in which it might be possible to do so. It issues no invitation to any person to act or rely upon such opinions, advices or information or any of them and it accepts no responsibility for any of them.
RANZCR® intends by this statement to exclude liability for any such opinions, advices or information. The content of this publication is not intended as a substitute for medical advice. It is designed to support, not replace, the relationship that exists between a patient and his/her doctor. Some of the tests and procedures included in this publication may not be available at all radiology providers.
RANZCR® recommends that any specific questions regarding any procedure be discussed with a person's family doctor or medical specialist. Whilst every effort is made to ensure the accuracy of the information contained in this publication, RANZCR®, its Board, officers and employees assume no responsibility for its content, use, or interpretation. Each person should rely on their own inquires before making decisions that touch their own interests.