Medical Gas Therapy: Oxygen Therapy and Prescription
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Questions and Answers

Who is best prepared to recommend the correct dosage and delivery method for oxygen therapy?

  • Respiratory therapists (correct)
  • Physicians
  • Licensed practitioners
  • Nurses

What is the primary goal of oxygen therapy?

  • To correct acute arterial hypoxemia
  • To reduce cognitive impairment associated with COPD
  • To relieve symptoms of chronic hypoxemia
  • To maintain adequate tissue oxygenation while minimizing cardiopulmonary workload (correct)

What is the benefit of long-term oxygen therapy (LTOT) in patients with COPD?

  • It corrects acute arterial hypoxemia
  • It reduces cognitive impairment (correct)
  • It relieves symptoms of chronic hypoxemia
  • It increases cardiopulmonary workload

What is the result of correcting hypoxemia on PAO2 and PaO2?

<p>Increased PAO2, increased PaO2 (B)</p> Signup and view all the answers

What is the clinical objective of oxygen therapy in correcting hypoxemia?

<p>To correct documented or suspected acute arterial hypoxemia (C)</p> Signup and view all the answers

Who can administer oxygen therapy in emergency situations?

<p>Licensed practitioners (A)</p> Signup and view all the answers

What is the significance of correcting hypoxemia in oxygen therapy?

<p>It is the most tangible and easiest to document objective (D)</p> Signup and view all the answers

What is the role of a physician in oxygen therapy?

<p>To order oxygen therapy as a standing order or clinical protocol (D)</p> Signup and view all the answers

What is the primary effect of intrapulmonary shunt on the oxygenation of blood?

<p>Perfusion of alveoli that are poorly ventilated or poorly oxygenated (C)</p> Signup and view all the answers

What is the difference between hypoxemia and hypoxia?

<p>Hypoxemia is a lack of oxygen in the blood, while hypoxia is a lack of oxygen in the tissues (B)</p> Signup and view all the answers

What is the formula for calculating oxygen delivery (DO2) in the body?

<p>DO2 = cardiac output × CaO2 (A)</p> Signup and view all the answers

What is the consequence of uncorrected hypoxemia?

<p>Tissue ischemia and cell death (D)</p> Signup and view all the answers

What is the result of a right to left shunt?

<p>Deoxygenated blood from the right side of the heart mixes with oxygenated blood in the left side (C)</p> Signup and view all the answers

What is the effect of extrapulmonary shunt on oxygenation of the blood?

<p>Deoxygenated blood from the right ventricle completely bypasses the lung and enters the left atrium (C)</p> Signup and view all the answers

Why is it important for RCPs to understand the difference between hypoxemia and hypoxia?

<p>So they can provide accurate patient education and prevent confusion (C)</p> Signup and view all the answers

What is the units of measurement for Fractional Inspired Oxygen Concentration (FIO2)?

<p>Number from 0 to 1 (D)</p> Signup and view all the answers

What is the partial pressure of O2 dissolved in the arterial plasma?

<p>PaO2 (A)</p> Signup and view all the answers

What is the effect of hypoxia on the mitochondria?

<p>Prevents ATP production aerobically (C)</p> Signup and view all the answers

What is the cause of myocardial ischemia?

<p>Both reduced blood flow and reduced blood oxygen (B)</p> Signup and view all the answers

What is refractory hypoxemia?

<p>Hypoxemia that does not respond to O2 administration (C)</p> Signup and view all the answers

What is the effect of a left to right shunt?

<p>Reduces oxygenated blood flow to the aorta (B)</p> Signup and view all the answers

What is the result of inadequate oxygen at the tissue cell level?

<p>Cell death (D)</p> Signup and view all the answers

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