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Myocardial Perfusion Imaging with Adenosine
Aka: Myocardial Perfusion Imaging with Adenosine, Stress Imaging with Adenosine, Pharmacologic Stress Test with Adenosine, Adenosine Nuclear Test, Adenosine Cardiolite, Pharmacologic Stress Test with Regadenoson, Lexiscan Cardiolite
- See Also
- Exercise Stress Test
- Stress Imaging
- Pharmacologic Stress Test
- Stress Echocardiogram
- Stress Myocardial Perfusion Imaging
- Definition
- Myocardial Perfusion Imaging using Adenosine (or Regadenoson/Lexiscan)
- Approach
- Hold nitrates (Nitroglycerin) on day of the test
- Hold methylzanthines 24 hours before test
- Theodur
- Aminophylline
- Dipyridamole
- Preparations
- Adenosine or
- Regadenoson (Lexiscan)
- Longer half life than Adenosine
- Can be adminstered as bolus instead of continuous infusion
- Advantages
- Short duration of Adenosine action (<3 seconds)
- Vasodilator increases coronary flow 5x
- More sensitive than Dobutamine (but less specific)
- ST Depression specific for serious disease
- Left main Coronary Artery Disease
- Three-vessel Coronary Artery Disease
- Indications
- Left Bundle Branch Block
- Paced Rhythm
- WPW Syndrome
- Contraindications
- Asthma
- Severe Chronic Obstructive Pulmonary Disease (COPD)
- Concurrent medication use
- Dipyridamole
- Aggrenox
- Theophylline
- Caffeine prior to test (e.g. Coffee, Chocolate)