Respiratory Support and Acute Respiratory Distress Syndrome (ARDS) Basics
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Questions and Answers

What is the primary consequence of increased pulmonary vascular permeability in acute respiratory distress syndrome?

  • Loss of aerated lung tissue (correct)
  • Increased cardiac output
  • Decreased lung weight
  • Increased lung elasticity

What is the primary criterion for diagnosing respiratory failure in the Berlin Classification of ARDS?

  • Bilateral radiographic opacities
  • Increased physiological dead space
  • Oxygenation with PaO2/FiO2 < 200 mmHg
  • Hypoxemia with PEEP > 5 cm H2O (correct)

What is the characteristic timing of ARDS according to the Berlin Classification?

  • Within 1-2 weeks of a known clinical insult
  • Within 2-4 weeks of a known clinical insult or new or worsening respiratory symptoms
  • Within 1 week of a known clinical insult or new or worsening respiratory symptoms (correct)
  • Within 1-3 days of a known clinical insult

What is the definition of moderate ARDS according to the Berlin Classification?

<p>PaO2/FiO2 between 100-200 mmHg (C)</p> Signup and view all the answers

What is the characteristic radiographic feature of ARDS according to the Berlin Classification?

<p>Bilateral opacities – not fully explained by effusions, lobar/lung collapse, or nodules (D)</p> Signup and view all the answers

What is the primary consequence of increased venous admixture in acute respiratory distress syndrome?

<p>Decreased oxygenation (D)</p> Signup and view all the answers

What is the definition of severe ARDS according to the Berlin Classification?

<p>PaO2/FiO2 &lt; 100 mmHg (A)</p> Signup and view all the answers

What is the primary consequence of decreased lung compliance in acute respiratory distress syndrome?

<p>Increased work of breathing (A)</p> Signup and view all the answers

What is the characteristic origin of edema in acute respiratory distress syndrome according to the Berlin Classification?

<p>Non-cardiogenic (A)</p> Signup and view all the answers

What is the primary effect of increased pulmonary vascular permeability on the lungs?

<p>Increased lung weight (D)</p> Signup and view all the answers

What is the consequence of bilateral radiographic opacities on lung function?

<p>Decreased lung compliance (C)</p> Signup and view all the answers

What is the primary mechanism underlying the development of hypoxemia in ARDS?

<p>Decreased oxygen delivery to tissues (A)</p> Signup and view all the answers

What is the consequence of increased physiological dead space on respiratory function?

<p>Impaired gas exchange (B)</p> Signup and view all the answers

What is the primary characteristic of the inflammatory response in ARDS?

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

What is the primary timing of ARDS development after a known clinical insult?

<p>Within 1 week (C)</p> Signup and view all the answers

What is the primary effect of PEEP > 5 cm H20 on oxygenation in ARDS?

<p>Increased oxygenation (B)</p> Signup and view all the answers

What is the primary characteristic of lung injury in ARDS?

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

What is the primary consequence of loss of aerated lung tissue in ARDS?

<p>Impaired lung function (C)</p> Signup and view all the answers

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