Do’s and don’ts,
including “no caffeine!”

Discuss with your doctor which food and drinks to avoid before the test.

Help prevent a rescheduled test.

You should not consume the following foods, drinks, or medications
for at least 12 hours before the test:

No coffee or tea
even if decaffeinated

No diet supplements

 
 

No products with chocolate or cocoa

No soda or pop

 
 

No medications that contain aminophylline, theophylline, or dipyridamole*.

 
 

Help prevent a rescheduled test.

You should not consume the following foods, drinks, or medications for at least 12 hours before the test:

No coffee or tea
even if decaffeinated

No products with chocolate or cocoa

No soda or pop

No diet supplements

No medications that contain aminophylline, theophylline, or dipyridamole*.

* When possible, withhold dipyramidole for at least two days prior to LEXISCAN administration.

On test day, dress in appropriate attire to exercise

Wear comfortable clothing and shoes.

Wear comfortable clothing and shoes.

What to expect during your cardiac nuclear stress test

Stress tests compare how blood flows in your heart muscle when you exercise compared with when you are resting. During the test, special cameras track where blood flows and can show areas with reduced blood flow that may be due to blocked arteries.

Here is what will typically happen:

You will lie down or sit in a chair. Technicians attach sensors that track heart rate and blood pressure. They put an intravenous (IV) line in your arm or hand for injecting the tracer. The tracer uses a small amount of radioactivity to show up in the camera.

You will lie down or sit in a chair. Technicians attach sensors that track heart rate and blood pressure. They put an intravenous (IV) line in your arm or hand for injecting the tracer. The tracer uses a small, amount of radioactivity to show up in the camera.

To put your heart to work, you’ll exercise on a treadmill or stationary bicycle, or get a special medication such as Lexiscan (regadenoson) injection if you’re not able to exercise.

To put your heart to work, you’ll exercise on a treadmill or stationary bicycle, or get a special medication such as Lexiscan (regadenoson) injection if you’re not able to exercise.

If you’re given Lexiscan

Lexiscan is a drug given for people who are not able to exercise adequately for a stress test. Lexiscan increases blood flow through the arteries of the heart during a cardiac nuclear stress test.

Lexiscan goes in your arm through a small catheter (similar to a needle). After the injection, the catheter will be rinsed with saline (salt) solution. Then the tracer will be injected.

You may feel short of breath, or experience headache, flushing, chest discomfort or chest pain, dizziness, or nausea. You may also experience abdominal discomfort, a metallic taste in the mouth, or a hot feeling. Be sure to tell the medical team giving your test if any of your reactions worry you.

If you’re given Lexiscan

Lexiscan is a drug given for people who are not able to exercise adequately for a stress test. Lexiscan increases blood flow through the arteries of the heart during a cardiac nuclear stress test.

Lexiscan goes in your arm through a small catheter (similar to a needle). After the injection, the catheter will be rinsed with saline (salt) solution. Then the tracer will be injected.

You may feel short of breath, or experience headache, flushing, chest discomfort or chest pain, dizziness, or nausea. You may also experience abdominal discomfort, a metallic taste in the mouth, or a hot feeling. Be sure to tell the medical team giving your test if any of your reactions worry you.

If you get anxious: Remember that many people get stress tests. A team of medical professionals will closely monitor you throughout the entire procedure.

If you get anxious: Remember that many people get stress tests. A team of medical professionals will closely monitor you throughout the entire procedure.

There are two sets of pictures taken by the camera. Once following exercise or Lexiscan (if you are unable to exercise) and another at rest. The second set of pictures may be taken on the same day or the next day. Each set of pictures may take 15-30 minutes.

There is preparation time before the test as well as monitoring time after the test. The total time for a stress test, including the imaging, may take up to 3 hours or more.

There are two sets of pictures taken by the camera. Once following exercise or Lexiscan (if you are unable to exercise) and another at rest. The second set of pictures may be taken on the same day or the next day. Each set of pictures may take 15-30 minutes.

There is preparation time before the test as well as monitoring time after the test. The total time for a stress test, including the imaging, may take up to 3 hours or more.

A specialist will look at the images and brief your healthcare professional. You’ll discuss the results and next steps at your follow-up appointment.

A specialist will look at the images and brief your healthcare professional. You’ll discuss the results and next steps at your follow-up appointment.

Get a list of specific foods, drinks, and medications to avoid in preparation for your cardiac nuclear stress test.

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See what people are asking

Learn More

Usage

What is Lexiscan?

Lexiscan® (regadenoson) injection is a prescription medicine that goes into your blood by an IV (intravenous) line. It increases blood flow through the arteries of the heart during a cardiac nuclear stress test. Lexiscan is used when a patient cannot exercise adequately for a stress test.

Important Safety Information

Who should not be given Lexiscan?

Lexiscan is not for everyone.

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.

Allergic reactions can occur after Lexiscan injection.

Lexiscan may cause an increase or decrease in blood pressure, especially in patients with certain heart and blood disorders.

What should I tell my doctor before receiving Lexiscan?

Tell your doctor if you:

  • Have a heart or blood vessel disorder
  • Have a respiratory disease, such as COPD (chronic obstructive pulmonary disease) or asthma, and what medicines you take for it.
Lexiscan can cause breathing difficulties
  • Have a history of seizures. Lexiscan can increase the risk of seizures

What are some of the possible side effects of Lexiscan?

Lexiscan can cause stroke, which may be a result of an increase or decrease in blood pressure.

The most common side effects that occurred in clinical trials of Lexiscan include:

  • Shortness of breath
  • Nausea
  • Headache
  • Abdominal discomfort
  • Flushing
  • A metallic taste in the mouth
  • Chest discomfort or chest pain
  • Feeling hot
  • Dizziness

These side effects began soon after receiving Lexiscan and went away in 15 to 30 minutes.

How do I prepare for a heart scan?

In the 12 hours before your heart scan:

  • Do not have any food and drinks that have caffeine in them
  • Do not take medicines that have caffeine, aminophylline, or theophylline in them

Ask your doctor if you should stop taking any medicines you usually take before the day of the test.

What about women who are nursing?

If you are nursing, be sure to pump and throw away breast milk for 10 hours after receiving Lexiscan.

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.

For further information, please talk to your healthcare professional and see accompanying full Prescribing Information for Lexiscan.

Usage and Important Safety Information

See More

Usage

What is Lexiscan?

Lexiscan® (regadenoson) injection is a prescription medicine that goes into your blood by an IV (intravenous) line. It increases blood flow through the arteries of the heart during a cardiac nuclear stress test. Lexiscan is used when a patient cannot exercise adequately for a stress test.

Important Safety Information

Who should not be given Lexiscan?

Lexiscan is not for everyone.

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. Allergic reactions can occur after Lexiscan injection.

Usage

What is Lexiscan?

Lexiscan® (regadenoson) injection is a prescription medicine that goes into your blood by an IV (intravenous) line. It increases blood flow through the arteries of the heart during a cardiac nuclear stress test. Lexiscan is used when a patient cannot exercise adequately for a stress test.

Important Safety Information

Who should not be given Lexiscan?

Lexiscan is not for everyone.

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.

Allergic reactions can occur after Lexiscan injection.

Lexiscan may cause an increase or decrease in blood pressure, especially in patients with certain heart and blood disorders.

What should I tell my doctor before receiving Lexiscan?

Tell your doctor if you:

  • Have a heart or blood vessel disorder
  • Have a respiratory disease, such as COPD (chronic obstructive pulmonary disease) or asthma, and what medicines you take for it.
Lexiscan can cause breathing difficulties
  • Have a history of seizures. Lexiscan can increase the risk of seizures

What are some of the possible side effects of Lexiscan?

Lexiscan can cause stroke, which may be a result of an increase or decrease in blood pressure.

The most common side effects that occurred in clinical trials of Lexiscan include:

  • Shortness of breath
  • Nausea
  • Headache
  • Abdominal discomfort
  • Flushing
  • A metallic taste in the mouth
  • Chest discomfort or chest pain
  • Feeling hot
  • Dizziness

These side effects began soon after receiving Lexiscan and went away in 15 to 30 minutes.

How do I prepare for a heart scan?

In the 12 hours before your heart scan:

  • Do not have any food and drinks that have caffeine in them
  • Do not take medicines that have caffeine, aminophylline, or theophylline in them

Ask your doctor if you should stop taking any medicines you usually take before the day of the test.

What about women who are nursing?

If you are nursing, be sure to pump and throw away breast milk for 10 hours after receiving Lexiscan.

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.

For further information, please talk to your healthcare professional and see accompanying full Prescribing Information for Lexiscan.