" Most interventional cardiologists will, at some stage, have to decide whether to place a coronary stent in a patient with a history of skin allergy to one of metal components, most commonly nickel.
Our study found no evidence of an increased risk of heart attack, death, or restenosis, which is a recurrent narrowing within a stent, in patients who reported themselves to be allergic to metal prior to implantation.
These findings should provide some reassurance to clinicians and patients who are faced with this clinical issue, especially as there has been scarce and conflicting information in the literature."