Pulmonary Mechanics in Side Lying Position Quiz
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Questions and Answers

In which region of the lungs does the ventilation gradient increase from upper to lower lungs?

  • Non-dependent lung region (correct)
  • Medial lung region
  • Middle lung region
  • Dependent lung region

What happens to the FRC (Functional Residual Capacity) in side-lying position compared to supine?

  • Intermittently changes (correct)
  • Decreases significantly
  • Remains the same
  • Increases significantly

Where does optimal ventilation/perfusion (V/Q) matching occur in the lungs?

  • Dependent lung zone
  • Middle lung zone
  • Non-dependent lung zone
  • Upper 1/3rd of each lung (correct)

What is the effect on the anteroposterior diameter of the abdomen in side-lying position at rest?

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

Why is there increased work of breathing (WOB) in side-lying position compared to upright?

<p>Increased resistance and abdominal pressure (D)</p> Signup and view all the answers

What is the perfusion pattern in the lungs from non-dependent to dependent regions?

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

What is the effect of side lying position on left ventricular end diastolic pressure?

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

Which position is most commonly used for unilateral lung pathologies?

<p>Side lying (B)</p> Signup and view all the answers

How does ventilation distribution change in prone abdomen free position compared to the typical prone position?

<p>Greater in dependent zones (D)</p> Signup and view all the answers

In side lying position, how should pillows be placed to prevent pressure ulcers?

<p>Under bony prominences (C)</p> Signup and view all the answers

What beneficial effect does side lying position have on oxygenation?

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

How does the fluid shift from limbs to thorax change when a patient is in the side lying position?

<p>Remains same as supine (D)</p> Signup and view all the answers

What is the typical V/Q ratio in zone II of the lungs in the supine position?

<p>0.8 (A)</p> Signup and view all the answers

What is the effect of supine positioning on the V/Q ratio in the lungs?

<p>The V/Q ratio decreases from apex to base of the lungs. (A)</p> Signup and view all the answers

What is the effect of supine positioning on lung compliance?

<p>Lung compliance decreases due to increased pulmonary blood volume and airway closure. (A)</p> Signup and view all the answers

What is the effect of supine positioning on the diaphragm?

<p>The diaphragm is displaced upwards, decreasing FRC. (A)</p> Signup and view all the answers

What is the effect of supine positioning on airway resistance?

<p>Airway resistance increases due to reduced FRC. (A)</p> Signup and view all the answers

What is the primary mechanism for generating tidal volume in the supine position?

<p>Abdominal displacement (C)</p> Signup and view all the answers

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