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Lexiscan (regadenoson injection) is a prescription drug given through an IV line that increases blood flow through the arteries of the heart during a cardiac nuclear stress test. Lexiscan is given to patients when they are unable to exercise adequately for a stress test.
IMPORTANT SAFETY INFORMATION
Lexiscan should not be given to patients who have certain abnormal heart rhythms unless they have a pacemaker.
Lexiscan can cause serious or fatal cardiac arrest, abnormal heart rhythms or heart attack.
Drugs such as Lexiscan may cause an increase or decrease in blood pressure, especially in patients with certain heart and blood vessel disorders.
Lexiscan can cause breathing difficulties. Before receiving Lexiscan, tell your doctor if you have respiratory diseases, such as COPD (chronic obstructive pulmonary disease) or asthma. Tell your doctor about all medications you use to manage these conditions.
The most common side effects that occurred in clinical trials of Lexiscan were shortness of breath, headache, flushing, chest discomfort or chest pain, dizziness, nausea, abdominal discomfort, a metallic taste in the mouth, and feeling hot. Most common side effects began soon after receiving Lexiscan and went away within 15 minutes except for headache, which resolved in most patients within 30 minutes.
Avoid consuming any caffeine-containing foods and beverages or medicines containing caffeine or theophylline in the 12 hours before your scheduled heart scan.
Ask your doctor if you should stop taking any medications you usually take before the day of the test.
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit www.fda.gov/medwatch or call 1-800-FDA-1088.