30 Questions
What is the most common type of delayed contrast reaction?
Cutaneous reactions
What is the timeframe for delayed contrast reactions to occur?
Anywhere from 3 hours to 7 days following the administration of contrast
What is a severe reaction that can rapidly escalate to a life-threatening situation?
Severe reactions
What is the reported incidence of cutaneous reactions?
0.59%
What is a common symptom of cutaneous reactions?
Pruritis
What is the primary treatment for symptoms of cutaneous reactions?
Corticosteroid creams
What is the maximum dose of diazepam that can be administered?
30 mg
What is the recommended route of administration for epinephrine in pediatrics?
Subcutaneous
What is the dosage of nitroglycerin used to treat acute angina?
0.4 mg sublingual
What is the classification of diazepam?
Benzodiazepine
What is the strength of epinephrine that should NOT be used for IV injection?
1:1,000 (1 mg/mL)
What system categorizes children into one of eight color zones based on their weight and height?
Broselow-Luten system
What is the limitation of using serum creatinine to monitor renal function?
It is not a sensitive marker of renal function
What is the widely accepted figure of serum creatinine that indicates significant renal insufficiency?
1.5 mg/dL
What is the limitation of creatinine clearance derived from 24-hour urine collection?
It overestimates the true GFR by as much as 20%
Why is glomerular filtration rate (GFR) a more sensitive indicator of renal function than serum creatinine?
Because GFR is a direct measure of renal function
What is the consequence of using a cut-off value of 1.5 mg/dL for serum creatinine?
It may exclude individuals who actually have renal insufficiency
What is the reason for the development of alternative predictors of GFR?
Because creatinine clearance is a cumbersome test
What is the general definition of acute renal failure in terms of serum creatinine?
A 25–50 percent increase or 0.5–1 mg/dL
How long does it take for serum creatinine to peak in acute renal failure?
3–5 days
What is a common clinical manifestation of acute renal failure?
Oliguria (decreased urine output)
What is a potential consequence of severe acute renal failure?
Dialysis may be necessary
Which patients are at higher risk of contrast-induced nephrotoxicity due to dehydration?
All patients, especially if dehydrated
Which group of diabetes patients is likely at higher risk of contrast-induced renal toxicity?
Insulin-dependent diabetics
What is the primary route of excretion for iodipamide?
Bile
What is the reason for using iodipamide to image the biliary system?
Because it is excreted into the bile
What is the increased risk for patients with compromised hepatic function who receive iodipamide?
Renal toxicity
What is the primary advantage of gadolinium-based contrast agents over iodinated contrast agents?
They have a lower risk of allergic reaction
What is the composition of the solution infused over 30 minutes before CT imaging?
20 cc Iodipamide diluted into 100cc 0.9 Normal Saline
What is the similarity between CT and MR contrast agents?
Types of adverse reactions
This quiz covers the moderate and severe reactions that can occur after contrast administration in radiology, including bronchospasm, laryngeal edema, and changes in cardiac rate and blood pressure.
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