A stress test is used to diagnose coronary artery disease. It provides continuous
monitoring of the patient's heart rhythm, pulse and blood pressure. There are
two main types of stress tests with nuclear pharmaceuticals. These include:
- Cardiolite Stress Test
- IV Parsantine Cardiolite Stress Test
With a cardiolite stress test, an IV is inserted into your arm before the
test begins and an isotope is injected which allows pictures to be taken. At
that time, you will begin to either walk on a treadmill or ride an exercise
bike to increase your heart rate. When the exercise time is finished, another
isotope is injected and another x-ray is taken. At that time, you are given
a fatty snack to allow the isotope to clear from the liver. The exercise portion
of the test is supervised by a qualified physician.
Procedure
An informed consent must be signed before the procedure by the patient and
performing physician. An IV will be started and a brief medical history will
be obtained. Resting X-ray pictures will be taken after the first injection
of the isotope. The patient will have to lie very still with the left arm over
their head during the scans.
For the exercise stress test, the patient is attached to an ECG machine to
monitor their heart throughout the procedure. This is done by applying sticky
electrode patches to their chest area. A resting ECG and blood pressure are
taken before the procedure for comparison. When the physician arrives, the
patient will begin to either walk on a treadmill with varying speeds and elevations
or they will pedal a bicycle with increasing intensity every few minutes. When
the physician determines that the patient has walked long enough, the heart
rate is high enough, the patient is too tired or abnormalities are noted, the
isotope will be injected for the second time. The patient will slow down on
the bicycle/treadmill to cool down for one minute.
After the test, the patient will sit in a chair to rest for an additional
few minutes. They will continue to have their heart rate, blood pressure or
EKG monitored for four or five minutes or until it returns to normal. The patient
will be given a fatty snack to clear the isotope from the liver.
The physician may give the patient a preliminary report. Otherwise, the entire
test will be reviewed by the physician and a report dictated. This report will
be sent to the ordering physician and any referring physicians noted. The ordering
physician will then discuss the results with their patient.
What You Should Know
On the day of the test you should register with Outpatient Registration Area
on first floor of the Medical Center behind the Information Desk. Plan to arrive
two hours before the scheduled stress test time. Following registration, you
will be directed to Nuclear Medicine in Radiology on the first floor. The
entire procedure takes about three hours.
To Prepare for This Test:
- No Solid Foods for Two Hours Before the Test
- Wear Comfortable Walking Shoes
- No Smoking for Two Hours Before the Test
- Take Medications as Normal Unless Otherwise Indicated by Your
Physician
- No Viagra 24 Hours Before the Test
- No Caffeinated Coffee, Tea or Colas 24 Hours Prior to the Test
(Decaf is Acceptable, But Avoidance of All Such Beverages is Preferred). No
Chocolate or Cocoa Either. You May Drink Water.
- Wear Slacks if Possible - No One Piece Jump Suits
A IV Persantine cardiolite stress test is a pharmacological stress test used
for elderly patients or those who are unable to adequately exercise to increase
their heart rate. It provides continuous monitoring of the patient's heart
rhythm, pulse and blood pressure to diagnose for underlying coronary artery
disease.
For this test, Medicare in Ohio has determined that it must meet certain medical
criteria. A local Medical Review Policy (LMRP) letter details the diagnoses
that are acceptable. It will be necessary to provide an ICD-9 diagnosis or
a set of signs and symptoms from which a diagnosis can be determined. If the
reason for the test does not match the Medicare requirement, the test will
still be performed. However, you must sign an Advanced Beneficiary Notification
(ABN) before receiving the test.
During the test, you will lie down while receiving a rapid injection of Persantine
(drug) IV to increase the heart rate. An IV is inserted before the test and
an isotope is injected at rest and again after the drug is infused. X-rays
are taken after each injection. The patient is given a fatty snack after the
second injection to allow the isotope to clear from the liver. A qualified
physician supervises the infusion of the drug.
Procedure
An IV will be started and a brief medical history will be obtained. Resting
X-ray pictures will be taken after the first injection of the isotope. The
patient will have to lie very still with their left arm over their head during
the scans.
For the pharmacological stress test, the patient is attached to an ECG machine
to monitor their heart throughout the procedure. This is done by applying sticky
electrode patches to their chest area. A resting ECG and blood pressure are
taken before the procedure for comparison. When the physician arrives, the
drug will be rapidly infused over a three to four minute period. Toward the
end of the infusion, the isotope will be injected for the second time.
After the test and the infusion of the drug is complete, the patient will
continue to have their heart rate, blood pressure or ECG monitored for approximately
20 minutes or until return to baseline. The patient will be given a fatty snack
to clear the isotope from the liver. The physician may give the patient a preliminary
report. Otherwise, the entire test will be reviewed by the physician and a
report dictated. This report will be sent to the ordering physician and any
referring physicians noted. The ordering physician will then discuss the results
with their patient.
What You Should Know
On the day of you test, you will need to register with Outpatient Registration
on the first floor of the Medical Center behind the Information Desk. Plan
to arrive two hours before your scheduled stress time. Following registration,
the patient will be directed to Nuclear Medicine in Radiology on the first
floor. The entire procedure takes about three hours.
To Prepare for This Test:
- No Solid Foods for Two Hours Before the Test
- Wear Comfortable Walking Shoes
- No Smoking for Two Hours Before the Test
- Take Medications as Normal Unless Otherwise Indicated by Your
Physician
- No Viagra 24 Hours Prior to the Test
- No Caffeinated Coffee, Tea or Colas 24 Hours Prior to the Test
(Decaf is Acceptable but Avoidance of All Such Beverages is Preferred). No
Chocolate or Cocoa Either. You May Drink Water.
- Wear Slacks if Possible - No One Piece Jump Suits
- Restrict Xanthine Medications for 36-48 Hours Before the Test
as They Will Interfere with the Results