A patient who has limited exercise tolerance is scheduled for a thallium scan with dipyridamole.Which clinical parameter should a nurse identify as a possible contraindication for this procedure?
A)Blood pressure ranges from 136/90 mm Hg to 162/96 mm Hg
B)History of asthma
C)Myocardial infarction 1 month ago
D)Serum potassium is 4.5 mEq/L and patient receives potassium supplement daily

Question

Quizplus · Accepted Answer

Dipyridamole can cause bronchoconstriction, which can be dangerous for patients with asthma, so this may be a contraindication for this procedure. The blood pressure range and serum potassium level are within normal limits and would not necessarily be contraindications. While a recent myocardial infarction may raise concerns, it is not an absolute contraindication unless the patient is unstable or has other contraindications.

A Patient Who Has Limited Exercise Tolerance Is Scheduled for a Thallium