MDCT.net's
Guide to Technology and Protocols
Guide to Technology and Protocols
MDCT Technology | Technical Considerations | Preparing Patients for Contrast-Enhanced Exams | CM Safety
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
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