How is adenosine used for stress test?
During the test, you will receive a small amount of medication (adenosine, dipyridamole or regadenoson). This medication makes the coronary arteries open (dilate) much like they do when you exercise. This causes more blood to flow and simulates the effect of exercise for patients who cannot exercise on a treadmill.
What is the target heart rate for nuclear stress test?
Your target heart rate during a stress test depends on your age. For adults, the maximum predicted heart rate is 220 minus your age. So, if you’re 40 years old, the maximum predicted heart rate is 220 – 40 = 180.
How long is a stress test with IV?
If you aren’t able to exercise, you’ll receive a drug through an IV that mimics exercise by increasing blood flow to your heart. A nuclear stress test can take two or more hours, depending on the radioactive tracer and imaging tests used.
How to calculate the Adenosine infusion rate?
NOTE: The adenosine infusion rate can be calculated from the following formula: Infusion rate (mL/min) = [0.140 (mg/kg/min) x total body weight (kg)] divided by the Adenoscan concentration (3 mg/mL). 140 mcg/kg/minute IV infused for 6 minutes for a total dose of 0.84 mg/kg.
How long is an adenosine perfusion in a stress test?
Pharmacologic Stress Test: Adenosine minute protocol with the perfusion agent given at 3 minutes of infusion. Investigators have reported good results with infusion periods as short as 4 minutes (with the perfusion agent injected at 2 minutes).
What kind of test to check for adenosine?
A pharmacological Cardiac MRI stress test is a diagnostic test. It is used to check the blood flow to the heart. An exercise stress test is another way to check the blood flow, but if you cannot exercise or if your heart rate does not go up enough with exercise, this test may be done instead.
How does adenosine stress test affect heart rate?
This medication makes the coronary arteries open (dilate) much like they do when you exercise. This causes more blood to flow and simulates the effect of exercise for patients who cannot exercise on a treadmill. The medication causes only a slight increase in your heart rate.