Oral Contrast
1. Why do we use oral contrast? | |
2. What kind of oral contrast do we use? | |
3. When do we use positive agents and when do we use neutral agents? | |
4. What are the advantages of oral LOCM (Omnipaque)? | |
Advantages are:
LOCM, low-osmolar CM "Low-osmolar contrast media is an ideal CT oral contrast. It is relatively nonabsorable and of low risk to the patient if aspirated. It can easily be titrated to create the desired density. It is water soluble and of low viscosity which permits uniform distribution." "We have recently switched completely to LOCM for our oral contrast during CT scanning. Iohexol is the only LOCM with Food and Drug Administration approval for use as an oral contrast at this time." Horton et al: Taste and Tolerability of Iohexol as Oral Contrast for CT
"Patients preferred dilute iohexol over dilute diatrizoate sodium for oral contrast for abdominal-pelvic CT. There was no significant difference in bowel opacification or adverse effect profile." "Of 287 subjects who expressed a preference, 233 patients (81%) preferred dilute iohexol compared with 54 patients (19%) who preferred dilute diatrizoate sodium.ten patients had no preference and 3 did not complete the taste comparison study." Johns Hopkins Protocol: January 2015
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5. Is there any contraindication to the use of oral contrast? | |
6. If a patient has had a prior reaction to IV contrast can we still use oral contrast? | |
Part 2: Does this differ between inpatients and outpatients? | |
9. Can you use a single bottle of Omnipaque -350 at multiple time points by drawing 10-20 cc at a time to use to mix oral contrast? | |
10. What is VoLumen and when do you use it? |
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