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Author Question: Which of the following factors affect pulmonary deposition of an aerosol? 1. Size of the particles ... (Read 18 times)

appyboo

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on: Jul 16, 2018
Which of the following factors affect pulmonary deposition of an aerosol? 1. Size of the particles 2. Shape and motion of the particles 3. Physical characteristics of the airways 4. Class of medication being delivered
 
  a. 1 and 4 only
  b. 1 and 3 only
  c. 2, 3, and 4 only
  d. 1, 2, and 3 only

Question 2

What is the primary mechanism for deposition of large, high-mass particles (>5 m) in the respir-atory tract?
 
  a. Inertial impaction
  b. Sedimentation
  c. Diffusion
  d. Brownian motion


komodo7

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

ANS: D
Whether aerosol particles that are inhaled into the lung are deposited in the respiratory tract de-pends on the size, shape, and motion of the particles and on the physical characteristics of the airways and breathing pattern.

Answer to Question 2

ANS: A
Inertial impaction occurs when suspended particles in motion collide with and are deposited on a surface. This is the primary deposition mechanism for particles larger than 5 m.


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