Mastering the Mechanics of Breathing
30 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the approximate intrapleural pressure during passive expiration at rest?

  • -2 cm H2O
  • -5 cm H2O (correct)
  • -8 cm H2O
  • 0 cm H2O

    • What is the primary force responsible for the production of intrapleural pressure?

  • Lung elastic recoil
  • Chest wall elastic recoil (correct)
  • Airway resistance
  • Alveolar pressure

    • What is the function of lung elastic recoil?

  • To collapse the alveoli
  • To increase intrapleural pressure
  • To reduce intrapleural pressure
  • To open the alveoli (correct)

    • During inspiration, what happens to the intrapleural pressure?

    <p>It becomes more negative</p> Signup and view all the answers

    What is the net pressure contribution from the alveoli (lungs) towards the intrapleural space?

    <p>+2 cm H2O</p> Signup and view all the answers

    What is the function of the negative intrapleural pressure?

    <p>Facilitate air intake during inspiration</p> Signup and view all the answers

    Which of the following is the primary cause of airway compression in COPD patients?

    <p>Increased intrapleural pressure during forced expiration</p> Signup and view all the answers

    What is the first line treatment for COPD patients?

    <p>SABA</p> Signup and view all the answers

    What is the purpose of using LAMA in COPD treatment?

    <p>To dilate the airway</p> Signup and view all the answers

    What is the role of steroids in COPD treatment?

    <p>To slow down the progression of COPD</p> Signup and view all the answers

    What is the overall goal of COPD treatment?

    <p>To relieve symptoms</p> Signup and view all the answers

    During forced expiration, dynamic compression of the airways occurs when the intrapleural pressure is

    <p>greater than the airways pressure</p> Signup and view all the answers

    Which part of the airways is most susceptible to dynamic compression during forced expiration?

    <p>Bronchioles</p> Signup and view all the answers

    In healthy individuals, dynamic compression of the airways typically occurs at the

    <p>Trachea</p> Signup and view all the answers

    Patients with COPD are more prone to dynamic compression of the airways due to

    <p>Damaged elastic tissue in small airways</p> Signup and view all the answers

    Dynamic compression of the airways can worsen airway obstruction and cause wheezing in patients with COPD due to

    <p>Compression or collapse of the airways</p> Signup and view all the answers

    What is dynamic compression of the airways?

    <p>The compression of airways during forced expiration</p> Signup and view all the answers

    Which factors can contribute to dynamic compression of the airways?

    <p>All of the above</p> Signup and view all the answers

    What clinical relevance does dynamic compression have in patients with COPD?

    <p>It worsens airway obstruction and causes wheezing</p> Signup and view all the answers

    What is the primary cause of dynamic compression of the airways?

    <p>Increased intrapleural pressure during forced expiration</p> Signup and view all the answers

    What is the role of inhaled corticosteroids in managing dynamic compression in COPD?

    <p>They dilate the airways and reduce inflammation</p> Signup and view all the answers

    Why do patients with COPD tend to forcefully expire their breath more frequently?

    <p>To overcome airway obstruction and facilitate airflow</p> Signup and view all the answers

    What is the main factor contributing to easier compression or collapse of the airways during dynamic compression in COPD patients?

    <p>Reduced lung compliance</p> Signup and view all the answers

    What is the ultimate goal in managing dynamic compression in COPD patients?

    <p>To improve quality of life and reduce symptoms</p> Signup and view all the answers

    What is the effect of dynamic compression on airflow during expiration?

    <p>It decreases airflow by narrowing the airways</p> Signup and view all the answers

    Why is dynamic compression more likely to occur in the bronchioles or bronchus?

    <p>They are less supported by cartilage compared to larger airways</p> Signup and view all the answers

    What is the primary cause of dynamic compression in patients with COPD?

    <p>Loss of lung compliance</p> Signup and view all the answers

    What is the main purpose of using bronchodilators in managing dynamic compression in COPD?

    <p>To dilate the airways and alleviate airway obstruction</p> Signup and view all the answers

    Select the correct reason on the occurrence of dynamic compression of airway:

    <p>Intrapleural pressure is greater than air pressure in respiratory tract</p> Signup and view all the answers

    Select the correct statement on dynamic compression of airways among COPD patients:

    <p>Its main clinical sign is wheezing sound during expiration</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser