When bedside work of breathing measures are unavailable, you should adjust the level of pres-sure-supported ventilation (PSV) to which of the following breathing patterns?
Spontaneous Rate VT
a. 20 breaths/min 6 ml/kg
b. 27 breaths/min 9 ml/kg
c. 22 breaths/min 4 ml/kg
d. 10 breaths/min 9 ml/kg
ANS: A
Most clinicians increase PSV until the breathing pattern approaches normal, that is, until the spontaneous ventilatory rate is 15 to 25 breaths/min and the spontaneous tidal volume (VT) is normal (5 to 8 ml/kg).
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