Table 1.

Summary of Allergic Acute Coronary Syndromes

	Allergic Acute Coronary Syndromes
Variable	Type I	Type II	Type III
Definition	Patients with no underlying IHD	Patients with underlying asymptomatic IHD	Mast cells/eosinophils in coronary or stent thrombus
Trigger factors	Drugs, conditions, food consumption, environmental exposures, vaccines
Clinical features	Acute chest pain, dyspnea, vomiting, nausea, palpitations, tachycardia, pruritus, urticaria, diaphoresis
Diagnostic tools	Physical examination, ECG, echocardiography, cardiac enzymes (troponin), serum IgE, tryptase, eosinophils, coronary angiography
Treatment	Oxygen, fluid resuscitation, antihistamines, epinephrine, steroids, mast cell membrane stabilizers	Antiaggregants, anticoagulants, statins, β-blockers, renin–angiotensin system blockers, and revascularization

ECG = electrocardiogram; IHD = ischemic heart disease.