Drugs That May Affect Radiopharmaceutical Distribution in Myocardial Perfusion Imaging Using 201Tl |
|
| Cause | Affect |
| Atenolol | Potential for reduced sensitivity or response to exercise |
| Dexamethasone | Enhanced myocardial uptake of radiotracer |
| Digitalis | Decreased myocardial concentration of radiotracer |
| Dilantin | Decreased myocardial concentration of radiotracer |
| Dipyridamole | Enhanced myocardial concentration; may cause a focal area of decreased uptake in left or right ventricle |
| Furosemide | Increased renal elimination and enhanced myocardial concentration of radiotracer |
| Isoproterenol | Increased myocardial concentration of radiotracer |
| Isosorbide dinitrate | Potential for reduced sensitivity a response to exercise |
| Metaprolol | Potential for reduced sensitivity a response to exercise |
| Nadolol | Potential for reduced sensitivity a response to exercise |
| Phenytoin | Reduced sensitivity a response to exercise; decreased myocardial concentration of radiotracer |
| Propranolol | Reduced sensitivity or response to exercise; decreased myocardial concentration of radiotracer |
| Sodium Bicarbonate | Increased myocardial concentration of radiotracer |
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