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Comparison of adenosine, dipyridamole, and dobutamine in stress echocardiography
T W Martin1, J F Seaworth, J P Johns
1Brooke Army Medical Center, Fort Sam Houston, Texas.
Insights
Dobutamine stress echocardiography demonstrates higher sensitivity and better patient tolerance compared to adenosine and dipyridamole stress echocardiography. Adenosine echocardiography offers superior specificity but may cause more frequent symptoms.
Area of Science:
- Cardiology
- Diagnostic Imaging
- Pharmacology
Background:
- Stress echocardiography is crucial for diagnosing coronary artery disease.
- Pharmacological stress agents like adenosine, dipyridamole, and dobutamine are used when exercise stress testing is not feasible.
- Comparing the efficacy and safety of these agents is essential for clinical decision-making.
Purpose of the Study:
- To compare the diagnostic performance and side effect profiles of adenosine, dipyridamole, and dobutamine in stress echocardiography.
- To determine the sensitivity, specificity, and accuracy of each agent.
- To assess patient tolerance and preference for each stress agent.
Main Methods:
- A crossover, blinded comparison study was conducted.
- Coronary angiography served as the criterion standard for diagnosis.
- Forty participants underwent stress echocardiography with dobutamine, adenosine, and dipyridamole, with left ventricular wall motion assessed after each stressor.
Main Results:
- Dobutamine stress echocardiography exhibited significantly higher sensitivity (76%) compared to adenosine (40%) and dipyridamole (56%).
- Adenosine echocardiography demonstrated significantly higher specificity (93%) than dobutamine (60%) and dipyridamole (67%).
- Adenosine caused the most frequent symptoms (100%), while dobutamine was better tolerated and preferred by more patients.
Conclusions:
- Dobutamine stress echocardiography is a more sensitive and better-tolerated option for diagnosing coronary artery disease.
- Adenosine echocardiography provides higher specificity but is associated with more frequent symptoms.
- Patient preference favors dobutamine and dipyridamole over adenosine.
Objective:
To compare adenosine, dipyridamole, and dobutamine in stress echocardiography with regard to sensitivity, specificity, accuracy, and side effects.
Design:
Crossover, blinded comparison, with coronary angiography serving as the criterion standard.
Setting:
U.S. Army tertiary care hospital.
Participants:
Forty participants, 25 with coronary disease and 15 without coronary disease. Patients were eligible if they had coronary angiography within 6 weeks of stress testing or if they had a risk for coronary disease of less than 5%.
Measurements:
Left ventricular wall motion was recorded after dobutamine (0.38 mg/kg body weight), adenosine (0.84 mg/kg body weight), and dipyridamole (0.84 mg/kg body weight) stress testing. Stress echocardiographic evaluation was considered to be abnormal if the patient developed new or progressive wall motion abnormalities. The rate of side effects for the types of echocardiography and the patient preference were recorded.
Main Results:
The sensitivity of dobutamine stress echocardiography (76%; 95% CI, 59% to 93%) was significantly higher than that of adenosine echocardiography (40%; CI, 21% to 59%; P less than 0.001) and that of dipyridamole echocardiography (56%; CI, 37% to 75%; P = 0.019). The specificity of adenosine testing (93%; CI, 80% to 100%) was significantly higher than that of dobutamine echocardiography (60%; CI, 35% to 85%; P = 0.008) and that of dipyridamole echocardiography (67%; CI, 43% to 91%; P = 0.028). Symptoms were more frequent with adenosine echocardiography (100%) than with dipyridamole (88%; P less than 0.001) or dobutamine (80%; P less than 0.001) echocardiography. Treatment for persistent symptoms was required in more patients after dipyridamole echocardiography (40%) than after dobutamine (12%; P less than 0.001) or adenosine (0%; P less than 0.001) echocardiography. More patients preferred dobutamine (48%) or dipyridamole (40%) echocardiography to adenosine echocardiography (12%; P less than 0.001).
Conclusions:
Dobutamine stress echocardiography is more sensitive and is better tolerated than adenosine or dipyridamole stress echocardiography. Adenosine echocardiography is more specific than dobutamine or dipyridamole echocardiography and is less likely to cause persistent symptoms.
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