A client is scheduled for a CT of the brain with and without IV contrast dye to evaluate a possible hemorrhage. Which finding in the client’s history should the nurse report immediately to the health care provider?

Number 1 is correct.

Rationale: Shellfish allergy is a possible contraindication to IV contrast medium. Depending on the severity of the allergy, IV diphenhydramine may be given. A history of schizophrenia and allergy to cephalosporins is not a contraindication to contrast dye. The presence of a pacemaker does not affect the use of contrast dye.