Invasive vs Noninvasive
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Questions and Answers

Which of the following is a disadvantage of using noninvasive modalities for measuring intracranial pressure?

  • They are more accurate than invasive modalities
  • They carry associated risks
  • They estimate ICP using direct pressure measurement (correct)
  • They require a transducer connected to tubing placed in the lateral ventricle

    • What is the most commonly used invasive device for measuring intracranial pressure?

  • A lumbar puncture needle
  • A catheter
  • An arterial line
  • A ventriculostomy or external ventricular drain (EVD) (correct)

    • What is a significant risk associated with EVD monitoring?

  • Difficulty in placement
  • Infection (correct)
  • Clots and air bubbles
  • Fluid leaks

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