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Author Question: Which of the following components of a person's biologic control system are responsible for ... (Read 48 times)

Coya19@aol.com

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on: Jul 16, 2018
Which of the following components of a person's biologic control system are responsible for controlling spontaneous ventilation? I. cerebellum II. chemoreceptors III. cerebral cortex IV. respiratory muscles
 
  A. I, III only
  B. I, II, IV only
  C. II, III, IV only
  D. I, II, III, IV

Question 2

Which of the following modes of mechanical ventilation is/are more likely to produce an altered PaCO2 in patients in response to chemoreceptor input? I. continuous mandatory ventilation II, proportional assist ventilation III. pressure support ventilation IV. assist-control (volume-cycled) ventilation
 
  A. III only
  B. II, IV only
  C. III, IV only
  D. I, II, III only


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kingdude89

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

ANS: C
A. Incorrect response: See explanation C.
B. Incorrect response: See explanation C.
C. Correct response: A person's biologic respiratory control system is responsible for control of spontaneous ventilation and is composed of four components: (1) central controller, (2) connecting nerves, (3) ventilatory pump (respiratory muscles), and (4) sensors (e.g., chemoreceptors and mechanoreceptors).
D. Incorrect response: See explanation C.

Answer to Question 2

ANS: C
A. Incorrect response: In response to increasing levels of FICO2, patients receiving PSV demonstrated increased chemoreceptor response, evidenced by a hypocapnia and a larger tidal volume.
B. Incorrect response: In response to increasing levels of FICO2, patient receiving PAV essentially maintained a constant PaCO2 (eupnea).
C. Correct response: In response to increasing levels of FICO2, patients receiving either ACV or PSV experienced increased chemoreceptor response, demonstrated by hypocapnia and an increased VT.
D. Incorrect response: In response to increasing levels of FICO2, patients receiving ACV demonstrated increased chemoreceptor response, evidenced by a hypocapnia and a greater tidal volume.


Coya19@aol.com

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Reply 2 on: Jul 16, 2018
Wow, this really help

steff9894

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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