Should simultaneous exercise become the standard for adenosine myocardial perfusion imaging?

Area of Science:

• Cardiovascular Imaging
• Nuclear Cardiology
• Pharmacologic Stress Testing

Background:

• Adenosine pharmacologic stress is widely used for radionuclide myocardial perfusion imaging.
• Concomitant low-level treadmill exercise (AdenoEx) is gaining popularity in large-volume labs.
• Existing studies suggest AdenoEx protocols offer several advantages over standard adenosine stress.

Purpose of the Study:

• To review the benefits and growing use of AdenoEx protocols in radionuclide myocardial perfusion imaging.
• To highlight the advantages of combining low-level exercise with adenosine stress.
• To support the integration of exercise into adenosine stress protocols where feasible.

Main Methods:

• Review of existing literature and studies on AdenoEx protocols.
• Analysis of reported benefits including side effects, safety, and imaging quality.
• Examination of current guidelines and recommendations regarding AdenoEx.

Main Results:

• AdenoEx protocols demonstrate decreased side effects and improved patient safety and tolerance.
• Enhanced target-to-background ratios due to reduced subdiaphragmatic activity are observed.
• Improved sensitivity and defect reversibility in myocardial perfusion imaging are reported with AdenoEx.

Conclusions:

• AdenoEx protocols offer significant advantages for radionuclide myocardial perfusion imaging.
• The combination of low-level exercise and adenosine stress enhances imaging outcomes and patient experience.
• Current reviews and guidelines advocate for the incorporation of low-level exercise with adenosine stress whenever possible.