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Author Question: Which of the following actions is indicated when a disparity exists between SpO2, SaO2, and the ... (Read 98 times)

sabina

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on: Jul 16, 2018
Which of the following actions is indicated when a disparity exists between SpO2, SaO2, and the clinical presentation of a patient?
 
  a. Move the probe to an alternate site to check for SpO2.
  b. Replace the pulse oximeter probe.
  c. Measure arterial oxygen saturation by CO-oximetry.
  d. Disregarding the SaO2.

Question 2

The newest types of mechanical ventilators use which of the following devices to measure airway pressures?
 
  a. Barometers
  b. Aneroid manometers
  c. Electromechanical transducers
  d. Variable orifice pneumotachometers


sabina576

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Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: C
Laboratory CO-oximeters measure all four types of hemoglobin by using separate wavelengths of light to identify each species, whereas pulse oximeters use only two wavelengths to quantify the amount of O2HB and HHB present.

Answer to Question 2

ANS: C
Barometers are used to measure atmospheric (barometric) pressure. Older ventilators incorporated an aneroid manometer into the ventilator circuit. Variable orifice pneumotachometers are used to measure flow. The devices that are used in the current ventilators today are the electromechanical transducers, which include piezoelectric transducers, variable capacitance transducers, and strain gauge transducers.


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