What aspects of the patient's history should be obtained prior to angiography?

History of radiographic studies, including exposure to contrast and any history of contrast reaction
Medication history (e.g., use of aspirin, warfarin, heparin, clopidogrel, metformin, drugs that contribute to renal toxicity)
History of surgery (especially cardiovascular) History of prior interventions (e.g., angioplasty, stent placement
Past medical history (e.g., allergies, asthma, diabetes, coagulopathy, cerebrovascular
or cardiovascular disease, renal disease, hypertension)