Cardiovascular prophylaxis and aspirin "allergy".

Area of Science:

• Cardiology
• Pharmacology
• Immunology

Background:

• Aspirin is a crucial antiplatelet medication for cardiovascular disease management.
• Physicians often avoid aspirin due to patient-reported "allergy" or reactions.
• Distinguishing true aspirin allergy from other adverse effects is critical for patient care.

Purpose of the Study:

• To differentiate between true aspirin hypersensitivity and other adverse reactions to aspirin.
• To guide clinical practice regarding the use of aspirin in patients with a history of "reactions to aspirin".

Main Methods:

• Review of patient histories reporting aspirin "allergy" or adverse reactions.
• Categorization of reactions into hypersensitivity versus other side effects like gastritis or easy bruisability.
• Evaluation of treatment strategies for each category.

Main Results:

• The majority of patients reporting aspirin "allergy" experience non-hypersensitivity side effects (e.g., NSAID-induced gastritis, easy bruisability).
• A minority of patients exhibit true aspirin hypersensitivity reactions.
• Patients with non-hypersensitivity reactions can often be initiated on aspirin therapy, with proton-pump inhibitors mitigating gastrointestinal issues.
• Patients with aspirin hypersensitivity can undergo safe aspirin challenge protocols.

Conclusions:

• Misdiagnosis of aspirin "allergy" can lead to withholding a vital cardiovascular treatment.
• Differentiating between aspirin hypersensitivity and other adverse effects allows for appropriate patient management.
• Safe aspirin challenge protocols enable the use of aspirin in most patients with a history of adverse reactions.