FOR MORE INFORMATION
Your Cardiac CTA is scheduled at Jamestown Hospital
After checking in at the front desk of the hospital, you will
Following the procedure, you will be taken back to the pre-
be directed to a pre-procedure room where a nurse will
procedure room. You will need to stay too have your heart
ask you to undress and put on a patient gown.The nurse
rate monitored for approximately 30 minutes.
Please report to the Admissions desk in the front lobby
will check to be sure all the appropriate tests and
of the hospital 5-10 minutes before the scheduled time.
paperwork are completed. Your heart rate, temperature,
Your exam will take about 30minutes to do but you
and blood pressure will be checked and an IV started on
There is a small risk of allergic reaction. You
should plan on being here about an hour before the
should notify your physician or the technologist if you
exam and about 30 minutes after it is completed.
have any allergy to “x-ray dye”.
In order to do the test, your heart rate must be less than60 beats per minute. If your heart rate is greater than 60,
If a large amount of the x-ray contrast leaks out
the nurse will give you another 100 mg lopressor tablet
under the skin where the IV is placed, skin damage
orally. After a 30 minute wait, your heart rate will be
CT (computerized tomography) angiography (CTA) is
checked again and then you will be taken to the CT suite.
an examination that uses x-rays to visualize blood flow
CTA may need to be avoided in patients with severe
in the coronary arteries. Beams of x-rays are passed
through the heart from different angles to create
You will be securely positioned on your back on the CT
If your heart rate remains low after the test, you may
multiple images, which are then processed by a
table. During the procedure, the table will move to place
need additional medication to reverse the effects of
computer to produce a cross-sectional picture.
the area of interest within the scanner. The technologist
Reconstructions of the scan data will be used to obtain
will control the procedure from an adjacent room where
information about the structure and function of the
you will be in full view at all times and in constant
communication via two-way microphones. Images will be
CTA images of blood vessels may be blurred or
taken during which the table will move slightly. You may
“fuzzy” if you move during the exam. Visualization of
hear the humming of the equipment as it produces the
the blood vessels may be difficult if the heart is not
Do not consume any form of caffeine 12 hours
functioning properly. Blocked blood vessels may also
make the images harder to interpret.
If your heart rate is less than 60, the technologist will
Take one (1) 100 mg lopressor tablet orally at 9:00
proceed with the test. If your heart rate is still greater
If your heart rate is not less than 60 beats per minute
than 60, a lopressor dose will be injected through your
after administration of the IV lopressor, the exam
Do not have anything to eat or drink for 4 hours
before the test. Inform the technologist if you:
You will have a 3-lead EKG attached to monitor your
** Are allergic to iodine compounds or have had a
Unless you are scheduled for other tests or are told
previous reaction to contrast material or “xray dye”.
Your IV will be attached to an automatic injector that
otherwise by your physician, you may resume
You will need to sign an informational consent and
will inject contrast during the time the scan is actually
your regular diet after completion of the scan.
answer some questions about your health history.
being performed. The technologist will perform
You should have someone drive you home after the
You should monitor the injection/ needle site for
preliminary images with a test injection of the contrast.
You will receive one squirt of a nitroglycerine spray
WHY THE PROCEDURE IS DONE
under your tongue immediately before the scan is
You will need to have some one drive you home after
Visualize blood flow in the coronary arteries of the
heart and identify any narrowing (stenosis).
Most of the time for the CTA is spent settingeverything up. It will only take about 15-45 seconds for
The radiologist will report the test findings to your
Evaluate the structure and function of the heart.
the scan to be completed and it is very important that
physician. Your physician will contact you with the
Identify an aneurysm or dissection of the arteries.
you do not move during that time and that you follow
the instructions for holding your breath.
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