ATI Critical Care Exam Questions and
Answers
Before PFT's how long should a patient refrain from smoking? Using an inhaler? - ANSWER-smoking:
6-8 h
inhaler: 4-6 h
What test must you do before performing an arterial puncture? - ANSWER-Allen's test; patency of
the ulnar artery- if blood returns...
What is the FiO2 and the flow rate for a nasal cannula? at what rate do we need to administer
humidification? - ANSWER✔✔-24-44%
1-6 L/min
humidification at 4 L/min
What is the FiO2 and the flow rate for a simple face mask? - ANSWER✔✔-40-60%
5-8 L/min (less than this causes the patient to rebreathe CO2)
What is the FiO2 and the flow rate for a partial rebreather mask? - ANSWER✔✔-40-75%
6-11 L/min
What is the FiO2 and the flow rate for a non-rebreather? - ANSWER✔✔-80-95%
10-15 L/min
What is the FiO2 and the flow rate for a venturi mask? - ANSWER✔✔-24-50%
4-10 L/min
What is the FiO2 and the flow rate for a aerosol face mask, face tent, t-piece, and trach collar? -
ANSWER✔✔-24-100%
10 L/min at least
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