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Exam (elaborations)

CFRN Exam Prep | 180 Quizzes with 100% Verified Answers

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CFRN Exam Prep | 180 Quizzes with 100% Verified Answers

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  • September 16, 2024
  • 18
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • CFRN
  • CFRN
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CFRN Exam Prep | 180 Quizzes with 100%
Verified Answers

What needs to be monitored when the patient is receiving nitrates? -
✔✔Methemoglobinemia levels. Normal is 1-2%. Discontinue nitrates when level is > 10%.
Methylene blue if symptomatic and > 30%.



P plat upper limit? - ✔✔30 mmHg



P plat measurement is the best indication of what? - ✔✔Alveolar health



When P plat and PIP are both elevated, where is your problem likely to be? - ✔✔Alveolar
level



Desired alveolar minute ventilation? - ✔✔120mL/kg/min



Dead space calculation? - ✔✔33% or approximately 1mL/IBW



Gay Lussac's Law - ✔✔As temperature increases, pressure increases.



Boyle's Law - ✔✔Pressure increases as volume decreases.



Charles' Law - ✔✔Volume increases as temperature increases.



Graham's Law - ✔✔Gasses diffuse from an area of higher concentration (pressure) to areas
of lower concentration (pressure).

,Henry's Law - ✔✔The amount of gas in solution is directly proportional to the pressure of the
gas over the solution.



Dalton's Law - ✔✔Total pressure equals the sum of all individual partial pressures.



Formula for potential PO2 in healthy lungs? - ✔✔FiO2 x5



Withhold meds until body temp reaches what? - ✔✔30 C



Malignant hyperthermia is caused by what? - ✔✔Massive release of calcium



Fresh water drowning causes what? - ✔✔Surfactant wipe out and lung collapse



Salt water drowning causes what? - ✔✔Hyperosmolar state and third spacing of blood and
plasma in pulmonary spaces



Vent settings for salt water drowning? - ✔✔Low Vt, high f, high PEEP



Flight suit should have how much space for proper insulation and fit? - ✔✔1/4"



What are CAMTS VFR local/day flying minimums? - ✔✔800' ceiling, 2 miles visibility



Rotor wing pilots are required to have what? - ✔✔100 hrs night flight, 1000 hrs as PIC, 2000
hrs in rotorcraft



xx - ✔✔xx

, Kehr's Sign - ✔✔Test for ruptured spleen. Pain in left shoulder when lying down with legs
elevated.



Grey-Turner's Sign - ✔✔Sign of retroperitoneal hemorrhage. Bruising noted in bilateral
flanks.



Trousseau's Sign - ✔✔Tests for hypocalcemia. Cut off blood supply in arm for 3 minutes, and
patient's hand will show tetany.



Chvostek's Sign - ✔✔Tests for hypocalcemia. Tap on masseter and will have facial muscle
contractions.



McBurney's point - ✔✔Tests for appendicitis. Deep pain 1/3 distance from iliac crest to
umbilicus.



Cullen's Sign - ✔✔Tests for pancreatitis. Bluish discoloration around umbilicus.



Brudzinski's Sign - ✔✔Tests for meningitis. Head flexion causes hips and knees to flex
involuntarily.



Hypermagnesium state causes what? - ✔✔Decreased DTRs and hypotension



Hypokalemia causes what? - ✔✔Inverted T waves, ST depression, prominent U waves



Hyperkalemia causes what? - ✔✔Peaked T waves and widening QRS



Which two electrolytes have an inverse relationship? - ✔✔Calcium and Phosphorus

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