Methylene blue: an effective treatment for contrast medium-induced anaphylaxis.

Background: The purpose of this paper is to propose methylene blue as a lifesaving alternative drug for the treatment of contrast-induced anaphylaxis.

Case Report: In a cardiovascular catheterization laboratory invasive hemodynamic monitoring was used to document the lifesaving effect of IV bolus injections of 1.5-2 mg/Kg methylene blue solution to treat three patients for anaphylactic shock following radiocontrast injection during coronary angiography.