Screening for contraindications to hysterosalpingogram (HSG)^[1,2]

• Cardiac arrhythmia or arrest
• Circulatory collapse
• Seizures
• Unconsciousness
• Anaphylaxis
• Hospitalization required

¶ HSG premedication for mild contrast reaction:

• Prednisone 50 mg orally, given 13, 7, and 1 hour(s) prior to contrast
• Diphenhydramine 50 mg orally, given 1 hour prior to contrast
• Additional measures for the prevention of contrast reactions are reviewed elsewhere; refer to separate topic reviews available in UpToDate (eg, immediate hypersensitivity reactions to radiocontrast media, section on prevention of recurrent reactions, or topic review of prevention of contrast-induced nephropathy)