|How Do I Perform a CT Cardiac Scan?|
The following are guidelines of performing CT coronary angiogram
(Patient with poor ejection fraction should receive less quantity of saline chaser and Beta-blocker to be avoided).
Use of Beta Blockers as premedication
is evaluated and oral metaprolol (50mg or 100mg) is given and pulse and
BP is re-evaluated periodically over the next 45minutes to 1hour.
rate is one, which is below 65 on my present available scanner (Sensation
Preparation on table
be raised above head and the ECG leads are fixed.
be informed about the experience of diffuse warmth at the end of the injection.
line of 20 no. gauge needle is taken preferably on the left side (SVC
contamination is less).
A topogram is performed followed by a calcium score, which is nothing but a plain scan from the level of the carina till the base of the heart, for evaluation of calcified plaques along the coronary arteries.
Acquisition band for the coronary angiographic sequence is kept 1 cm above the carina down to the base of the heart.
procedure, the patient is kept under observation for 15 to 30 minutes
after which he is asked to consume about 1-½ litres of plain water
over next 4 hours.
(The above guidelines are as per my practice over last four years, Different centers might have some different ways of doing a particular step as per there set up experience.).