Renal Dysfunction and Acute Kidney Injury Classification
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Questions and Answers

What is the function of contrast media in medical imaging?

  • To cause tissues to appear darker on film
  • To decrease subject contrast in low-contrast tissues
  • To enhance subject contrast for clear visualization (correct)
  • To absorb X-rays from surrounding tissues
  • Which type of contrast media is specifically used to demonstrate organs or tubular structures?

  • Intravascular contrast media
  • Positive contrast media (correct)
  • Negative contrast media
  • Oral contrast media
  • What type of contrast media is Barium Sulphate considered to be?

  • Positive contrast (correct)
  • Intravascular contrast
  • Negative contrast
  • Oral contrast
  • Which type of contrast agent causes T2 shortening signal appearance to be dark in MRI?

    <p>Superparamagnetic agents like Iron oxide manganese</p> Signup and view all the answers

    What is the function of ultrasound contrast agents like Leovist?

    <p>Aiding in harmonic imaging</p> Signup and view all the answers

    Which type of contrast agent is most commonly used for vascular ultrasound imaging (Doppler)?

    <p>Microbubbles</p> Signup and view all the answers

    'Radiolucent' refers to materials that are:

    <p>Low atomic number</p> Signup and view all the answers

    'Radiopaque' materials in medical imaging generally have a:

    <p>'White on film' appearance</p> Signup and view all the answers

    What is the timeframe within which renal dysfunction is identifiable?

    <p>48 hrs</p> Signup and view all the answers

    In the context of Acute Kidney Injury (AKI), what does AKIN stand for?

    <p>Acute Kidney Injury Network</p> Signup and view all the answers

    According to the KDIGO classification, what criteria defines Stage 2 Acute Kidney Injury?

    <p>&gt;3 fold increase in serum Cr</p> Signup and view all the answers

    Which of the following is a recommended action to decrease the risk of Contrast Induced Acute Renal Injury (CIN)?

    <p>Minimize volume of radiographic contrast media</p> Signup and view all the answers

    What is the initial recommended infusion rate of isotonic saline before a procedure to manage intravascular volume?

    <p>100-150 ml/hr</p> Signup and view all the answers

    What should be considered post-procedure to monitor renal function?

    <p>Consider follow-up SCr 48 hrs post procedure</p> Signup and view all the answers

    What is the key difference between Stage 1 and Stage 2 AKI based on the KDIGO classification?

    <p>&gt;1.5 to 1.9 fold increase in Cr</p> Signup and view all the answers

    Which medication should be withheld before a procedure to manage the risk of Acute Kidney Injury?

    <p>Ibuprofen (NSAID)</p> Signup and view all the answers

    What is the main risk factor for Contrast Induced Nephropathy according to the text?

    <p>Severe dehydration</p> Signup and view all the answers

    Which of the following is a symptom of mild anaphylactoid reactions to iodine-based contrast agents?

    <p>Nausea</p> Signup and view all the answers

    What is a contraindication for using MRI contrast according to the text?

    <p>GFR below 25%</p> Signup and view all the answers

    Which imaging technique involves exclusive use of Barium Sulphate according to the text?

    <p>Intravenous cholangiography</p> Signup and view all the answers

    In which adverse reaction is metallic taste in the mouth a common symptom?

    <p>Adverse effects of MRI contrast</p> Signup and view all the answers

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