[Prevention of allergic reactions to X-ray contrast media. Description of the technique].

The technique of phophylaxis for allergic reactions due to contrast test in X-rays was applied in a group of 101 patients (20-60 years old). An antihistaminic (Promethazine 25 mg) and a corticosteroid (Hydrocortizone 100 mg or prednisol 60) were administered intravenously before the test. The prophylactic technique is described and satisfactory results are shown in all patients undergoing the contrast test. Undesirable effects of iodine substances in patients without an iodine allergy history were avoided with the use of this method in tests such as descending urogram, cytography, fistulography, etc. The use of drugs in the symptomatic treatment of undesirable effects of iodine in contrast test is suggested in some medical literature. This paper is the result of an experiment of a medical team from CIMEQ.