Patient preparation

Scheduling the Exam

• Plan the examination to allow enough time to:
  • Adequately prepare the patient
  • Acquire patient information
• Direct the patients to come in advance if oral GI contrast will be administered
  • Upper abdomen - 30 minutes before
  • Whole abdomen - 60 to 90 minutes before
• Screen the patients for the following
  • Renal function - It is advisable to consult the table "Risk Factors for Developing CIN" for pre-exam identification and preparation of patients who may be at risk for developing contrast-induced renal impairment.
  • Known allergies to contrast media, asthma, or history of multiple allergies
  • Metformin or other biguanide treatment for diabetes (temporarily discontinue)
  • History or suspicion of hyperthyroidism
• Determine the need to plan in advance for:
  • Bowel cleansing
  • Fasting prior to exam (eg, CT of stomach or pancreas)
  • Coordination with a specialist, eg,
    • Anesthesiologist for children requiring sedation
    • Medical support staff for ICU patient on a ventilator