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Oral contrast for CT
From WikEM
Contents
Background
- For patients undergoing CT of abdomen and/or pelvis
- Requires significant "lead time" - i.e. must administer >1hr prior to CT scan
Redypaque Dose
Weight |
Give 1 hour prior to scan |
Give 30 minutes prior to scan |
Give immediately upon arrival to CT |
< 2 kg |
None or as ordered by physician |
None or as ordered by physician |
None or as ordered by physician |
2-5 kg |
30 mL |
30 mL |
30 mL |
>5-20 kg |
90 mL |
90 mL |
90 mL |
>20-50 kg |
150 mL |
150 mL |
150 mL |
>50 kg |
300 mL |
300 mL |
300 mL |
(100cc/age)/3 = dose x 3
Max = 300cc
Indications
Desirable
- Appendicitis or Diverticulitis with BMI <20
- if CT indicated; consider immediate surgical consultation
- Suspected fistula or bowel leak
- Suspected Intussusception or internal hernia
Consider
- Suspected low-grade bowel obstruction
- Intra-abdominal abscess depending on the suspected primary source
- May not be required if primary source is skin infection
- Metastatic evaluation
- Suspected Hernia
Not Indicated
- Emergent process needing immediate CT
- Delays in time to imaging due to prolonged intolerance of oral contrast
- Uncomplicated Appendicitis or Diverticulitis with BMI >20
- Suspected high-grade or severe bowel obstruction
- Suspected aneurysm, dissection, or vessel thrombosis
- Suspected bowel ischemia or infarct
- Nephrolithiasis protocol
- Pancreatic protocol for Pancreatitis or mass
- Liver protocol for liver mass or abscess
- Adrenal protocol for adrenal mass or nodules
- Superficial abdominal wall infections or abscesses
- Inflammatory bowel disease
See Also
References
Authors
Ross Donaldson, Michael Holtz, Daniel Ostermayer, Neil Young