Given that rapid atrial fibrillation and other tachydysrhythmias can result from myocardial ischemia; is it wise to provide ASA to these patients as a precaution. I am a PCP, and we dont have a defined treatment for pulsed tachycardia.
If the patient meets the condition of suspected cardiac ischemia you can utilize the Cardiac Ischemia Medical Directive, including administering ASA. Arrhythmia alone does not meet this condition.
There can be many causes of arrhythmia including (but not limited to) infection, metabolic derangements, drugs (prescribed and illicit), pulmonary conditions, as well as a product of aging.
However, should the patient exhibit other symptoms consistent with cardiac ischemia (i.e. chest pain) along with the tachyarrhythmia, then it is reasonable to treat per the Cardiac Ischemia Medical Directive.