Assuming a constant rate of breathing, which of the following ...

[maychende]

Assuming a constant rate of breathing, which of the following inspiratory-to-expiratory (I:E) ra-tio would tend to most greatly impair a patient's systemic diastolic pressure?
 
  a. 1:4
  b. 1:3
  c. 1:2
  d. 1:1

Question 2

Potential effects of hyperventilation on the central nervous system include which of the follow-ing? 1. Increased O2 consumption 2. Increased cerebral vascular resistance (CVR) 3. Increased intracranial pressure (ICP)
 
  a. 1 and 2 only
  b. 2 and 3 only
  c. 1 and 3 only
  d. 1, 2, and 3

[1_Step_At_ATime]

Answer to Question 1

ANS: D
The factors of positive-pressure ventilation that may decrease the systemic diastolic pressure are high mean airway pressure, due to a high positive end expiratory pressure, high tidal volume, or long inspiratory time.

Answer to Question 2

ANS: B
When mechanical hyperventilation is used, CVR increases, and the result is decreased ICP.

[maychende]

Thank you

[1_Step_At_ATime]

No problemo