Why is dobutamine used in stress test?
A dobutamine stress echocardiogram (DSE) may be used if you are unable to exercise. Dobutamine is put in a vein and causes the heart to beat faster. It mimics the effects of exercise on the heart. During an echo, a transducer (like a microphone) sends out ultrasonic sound waves at a frequency too high to be heard.
What is the indication for a stress echo?
Indications. Like other stress imaging tests, the chief indications for stress echo are patients who either cannot exercise or exercise submaximally (who should undergo pharmacologic stress) and patients with an uninterpretable ECG caused by repolarisation abnormalities (who should undergo exercise echo).
What does a positive stress echo mean?
Positive or abnormal: Doctors may conclude the stress test is positive for cardiac ischemia—meaning the heart muscle wasn’t getting adequate oxygenated blood during the stress. There are certain ECG and imaging changes that would support this conclusion.
Does echo stress test show blockage?
The stress echo is especially useful in diagnosing coronary heart disease and the presence of blockages in the coronary arteries (the vessels that supply oxygen-rich blood to the heart muscle).
What happens if they find a blockage during a stress test?
Stress test results You do not have significant coronary artery disease (70% or greater artery blockage). You could still have a heart attack if a smaller blockage (less than 70%) ruptures and forms a clot. Your doctor may want to do further testing if you have other risk factors for heart disease that raise concern.
Is a stress echo as good as a nuclear stress test?
Although stress echocardiography may have comparable ability to detect coronary artery disease, current data suggest that stress echocardiography detects significantly less jeopardized viable myocardium than stress nuclear myocardial perfusion imaging and consequently fewer patients at risk for cardiac events.
What are the indications of dobutamine?
Dobutamine is indicated for patients who require positive inotropic support in the treatment of cardiac decompensation due to depressed contractility resulting either from organic heart disease or from cardiac surgical procedures, especially when a low cardiac output is associated with raised pulmonary capillary …
What does a dobutamine stress test feel like?
It may cause a warm, flushing feeling and in some cases, a mild headache. At regular intervals, the lab personnel will ask how you are feeling. Please tell them if you feel chest, arm, or jaw pain or discomfort, shortness of breath, dizziness or lightheadedness, or any other unusual symptoms.
What is a dobutamine or adenosine stress test?
Dobutamine or Adenosine Stress Test: This test is used in people who are unable to exercise. A drug is given to make the heart respond as if the person were exercising. This way the doctor can still determine how the heart responds to stress, but no exercise is required.
How does a dobutamine stress test work?
The dobutamine stress echo test involves the injection of a medication called dobutamine while you are closely monitored. The medication stimulates your heart in a similar way as exercise.
What is a dobutamine or adenosine stress echocardiogram?
A dobutamine stress echocardiogram (DSE) may be used if you are unable to exercise. Dobutamine is put in a vein and causes the heart to beat faster. It mimics the effects of exercise on the heart. During an echo, a transducer (like a microphone) sends out ultrasonic sound waves at a frequency too high to be heard.