Can you describe a dobutamine stress test?

Drug induced stress. If exercise on a treadmill is not an option (too much stress on the heart) due to a person’s medical condition, may use an intravenous medication called dobutamine. Dobutamine causes heart to beat faster and will mimic the effects of exercise on the heart. Stress tests usually can be nuclear with radiotracer or with echocardiography.
Chemical "Stress" Stimulant dobutamine, injected by IV drip to ? heart muscle intensity & rate of contraction, in place of walking. The ?ed intensity & BP is the stress. Radioactive isotope is injected iv, heart muscle cells pump the isotope inside semi-proportional to cell health & blood flow. A radiation camera detects some of the radiation exiting the body. Only severe, not mild, artery disease can be detected.
IV Chemical Stress. An intravenous is started . A radioactive substance is given and a picture of the heart muscle at rest is taken. Then Dobutamine is dripped in to increase the heart rate ( instead of walking on a treadmill) . Then another picture is taken of the heart muscle. The pictures are compared. The pictures look like donuts. If there is a bite out of the donut , that means less or no blood is going there.

Related Questions

How likely am I to panic while having a dobutamine stress test?

Panic stress test. My dearest...Probably not more likely than during any other test... Panick attacks are a personal response to a trigger, consciously or not. If you are well instructed/educated about the test, it should lower pre test anxiety. Understand that Dobutamine will increase heart rate and may be perceived as a "stronger" heart beat. Talk to your doctor about your concerns. Good luck! go for it :-). Read more...
Possible. People suffering from panic disorder can develop panic attacks following triggers, people differ in their specific triggers. Could be increased heart rate, could be nausea or any other physical symptom of anxiety. So, if palpitation and rapid heart beat is usually a trigger for your panic, then see your psychiatrist so he can prepare you for the test to alleviate the risk of triggering an attack. Read more...

Is it okay to drink caffeinated drink before a dobutamine nuclear stress test?

Yes within reason. . The caffeine does not affect the nuclear tracer or the dobutamine. However, most protocols want you to have not eaten or drank for 8 hours. Additionally, in my lab we withhold caffeine from all stress test patients because some of them will need to be converted to other types of stress that can be affected by caffeine. This way all options are available while the patient is present. Read more...
Caffeine. Yes. Caffeine can negate the effects of some pharmacologic stress agents such as dipyridamole (persantine) but should not interfere with Dobutamine. Read more...

Is it possible to die from a heart attack during a dobutamine stress test?

Yes, but it is rare. There is a 1 in 10, 000 chance of dying during any stress test. Read more...
Rarely, but Yes. All types of stress test have risks, including the rare risk of death. Other risks include arrhythmias such as atrial fibrillation, palpitations, COPD or asthma exacerbation, and passing out. Fortunately most are rare. Read more...

Have copd, asthma, am clastrophobic have cramps in my legs after venous closure surgery. Worried about dobutamine stress test & thinking of cancelling?

Stress Test. For this test you will not have to run or walk on the treadmill. They will give you medicine to elevate your heart rate. The machine they will use to take pictures of your heart is wide open and will not enclose you. I have had this test myself several times . If you are really nervous your doctor can give you a medicine to relax you before the test. You will do great. Read more...