Definity RT (Intravenous)

Generic name:perflutren lipid microsphere (intravenous route) [ per-FLOO-tren-LIP-id-MYE-kroe-sfeer ]
Drug class:Ultrasound contrast media

Medically reviewed by Drugs.com. Last updated on May 30, 2022.

Commonly used brand name(s)

In the U.S.

• Definity
• Definity RT

Available Dosage Forms:

• Suspension

Therapeutic Class: Radiological Non-Ionic Contrast Media

Uses for Definity RT

Perflutren lipid microsphere injection is used during an echocardiogram to help diagnose or find problems in the heart.

Perflutren lipid microsphere is an ultrasound contrast agent. Ultrasound contrast agents are used to help provide a clear picture during ultrasound. Ultrasound is a special kind of diagnostic procedure. It uses high-frequency sound waves to create images or “pictures” of certain areas inside the body. The sound waves produced by the ultrasound equipment can be reflected (bounced off) by different parts of the body, such as the heart or liver. As the sound waves return they are electronically converted into images on a television screen. Unlike x-rays, ultrasound does not involve ionizing radiation. The lipid microspheres sonicated preparation contains very small gas-filled lipid microspheres that reflect the sound waves and help create a better picture.

This medicine is to be given only by or under the direct supervision of a doctor with specialized training in ultrasound procedures.

Before using Definity RT

In deciding to use a diagnostic test, any risks of the test must be weighed against the good it will do. This is a decision you and your doctor will make. Also, other things may affect test results. For this test, the following should be considered:

Allergies

Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.

Pediatric

Appropriate studies have not been performed on the relationship of age to the effects of perflutren lipid microsphere injection in the pediatric population. Safety and efficacy have not been established.

Geriatric

Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of perflutren lipid microsphere injection in the elderly. However, elderly patients are more sensitive to the effects of this medicine than younger adults.

Breastfeeding

There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.

Interactions with medicines

Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. Tell your healthcare professional if you are taking any other pre...