Regadenoson Injection Prefilled Syringe 0.4 mg per 5mL

Regadenoson Injection Prefilled Syringe 0.4 mg – Frequently Asked Questions (FAQs)

• What is Regadenoson Injection used for?

  Regadenoson is used as a coronary vasodilator during a cardiac nuclear stress test (myocardial perfusion imaging) for patients who cannot exercise adequately.

• How is Regadenoson Injection administered?

  It is administered as a quick intravenous (IV) injection (bolus) by a healthcare professional, usually in a hospital or cardiac imaging center, followed by an injection of a radioactive tracer.

• How does Regadenoson work?

  Regadenoson increases blood flow in the coronary arteries, mimicking the effects of exercise so that areas of the heart with reduced blood supply can be detected during the scan.

• What are the common side effects of Regadenoson?

  Common side effects include shortness of breath, chest discomfort, flushing, headache, dizziness, abdominal pain, or nausea. Most side effects are short-lived and resolve within 15–30 minutes.

• Who should NOT receive Regadenoson?

  It should not be given to patients with certain types of heart block (unless they have a pacemaker), severe hypotension, or history of severe allergic reaction to regadenoson. Use with caution in patients with asthma or COPD due to risk of bronchospasm.

• How long do the effects of Regadenoson last?

  The main effects last for a few minutes, but minor side effects can persist for 15 minutes or more.

• What should I tell my doctor before receiving Regadenoson?

  Inform your provider about all medical conditions, especially asthma, COPD, heart problems, or allergies. Also, list all medications and supplements you're taking.

• Should I avoid anything before my stress test with Regadenoson?

  Yes. You should avoid caffeine (coffee, tea, chocolate, energy drinks, soda) and theophylline-containing medications for at least 12 hours before the test, as they can interfere with the effects of regadenoson.

• Can I take my medications before the test?

  Continue most medications, but check with your healthcare team about any specific medications to withhold, especially those that could affect the test results.

• Are there any serious risks or rare side effects?

  Rarely, regadenoson can cause severe arrhythmias, heart attack, very low blood pressure, or severe allergic reactions. These are managed immediately in a clinical setting.

• Is Regadenoson safe for use in pregnancy or while breastfeeding?

  Its safety during pregnancy and breastfeeding is not well established. Inform your doctor if you are pregnant, might be pregnant, or breastfeeding.

• Can Regadenoson be given to children?

  Regadenoson is primarily used in adults. Its use in children is not well established and is typically avoided unless specifically directed by a specialist.

• What if I experience severe symptoms after administration?

  Let medical staff know immediately if you feel severe chest pain, trouble breathing, or become faint—they are prepared to treat side effects rapidly.

• Are there any drug interactions with Regadenoson?

  Caffeine and theophylline-containing products can reduce its effect. Dipyridamole can increase its effects. Always tell your provider all drugs and supplements you use.

• Do I need someone to drive me home after the test?

  Most patients can go home on their own after observation, but if you feel unwell or if sedatives were used with the test, arrange for someone to drive you home.