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CFRN A Graded Exam -Questions with 100% Verified Answers
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CFRN A Graded Exam -Questions with 100% Verified Answers
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CFRN A Graded Exam -Questions with 100%Verified Answers
What is the flight specific treatment for hypoxia after administering 100% fio2? - ✔Descend to
below 10000 in non pressurized aircraft
Why is the cabin of an aircraft at altitude so dry? - ✔Humidity decreases in cold temperature.
Air is brought in from the high altitude low temperature environment resulting is less than 2%
humidity
What are the cabin pressure zones? - ✔Physiologic zone
Physiologically deficient zone
Space equivalent zone
Space
What is the physiologic zone? - ✔0-10000 feet
What is the physiologically deficient zone? - ✔10000-50000 feet
What is the space equivalent zone? - ✔50-250000 feet
What is the Space zone? - ✔250000 feet and beyond
What are the BGA criteria for metabolic acidosis? - ✔Bicarb < 22
pH < 7.35
What is the normal base excess? - ✔-2 to +2
,What is base excess? - ✔the amount of strong acid or base required to titrate 1 L of blood to
pH 7.40 at 37 degrees C while pCO2 is held constant at 40 mm Hg
Formula for HCO3 replacement - ✔0.1 x (-BE) x kg
If your SaO2 is 90% then what is your likely Pao2? - ✔Pao2 60%
What are the critical BGAs for intubation? - ✔Pao2< 60
PaCo2 >55
pH <7.2
For every change in pH of 1.0 the K+ will change by. - ✔0.6 in the opposite direction
What are the three sides of the pediatric assessment triangle? - ✔Work of breathing
Appearance
Circulation
What is the LEMON difficult airway assessment? - ✔Look externally
Evaluate 3-3-2 three fingers in mouth, three from chin to crich, two from bottom of chin to
below crich
Malampati: 1 best, 4 worst
obstructions
neck mobility
Optimal intubation is to be performed with the patient's ear at the level of their? - ✔Sternal
notch
,Is hi flow nasal cannula capable of CPAP and Bipap modes? - ✔Yes
What is the standard for ETT cuff pressures? - ✔20-30, 25cm h2o is gold standard
How far away should the ETT be placed from the carina? - ✔2-3cm
At what vertebrae should the ETT tip sit ? - ✔T2-T3
What is the RSI dose of ketamine? - ✔2mg/kg
What are contraindications for succinylcholine? - ✔hyperkalemia
eye injuries
nervous system disorders
With unstable patients requiring intubation you should consider _____the dose of sedation and
_____ the dose of paralytic - ✔half, double
How many attempts are standard for a field intubation before attempting a surgical airway? -
✔3 if hyperoxygenated
Where are the central chemoreceptors located? - ✔In the medulla and pons
What two factors influence oxygenation? - ✔Fio2 and PEEP
What two factors influence ventilaton? - ✔Respiratory rate and Tidal Volume
Plateau pressure should be maintained less than? - ✔30cmH2o
, Peak pressure should be maintained less than? - ✔40cmH2o
Peak inspiratory pressure should be maintained less than? - ✔35cmH2o
What is the IBW calculation for males in inches? - ✔50kg + 2.3kg for every inch over 5 feet.
What is the IBW calculation for females in inches? - ✔45.5kg +2.3kg for every inch over 5 feet
What is the IBW calculation in cm for males? - ✔50 + (0.91 x cm - 152.4)
What is the IBW calc in cm for women? - ✔45.5 + (0.91 x cm - 152.4)
What is Trousseau's sign? - ✔BP cuff inflated and causes a carpal spasm.
(Low calcium)
What is Chvostek's sign? - ✔Push the cheek and it spasms
(low calcium)
What is the normal anion gap? - ✔4-12
What is normal albumin level? - ✔3.5-5
What is the implication of hypoalbuminemia? - ✔Liver failure, clotting concerns, less clotting
ability
What is normal PTT? - ✔25-35 seconds
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