lOMoARcPSD| 54339004
NBCRNA Physiology, Pharmacology, and
Anesthesia Equipment QUESTIONS AND
ANSWERS Guide WITH VERIFIED SOLUTIONS
100% CORRECT RATED A+ NEWLY UPDATED
2025
How long should a patient stop smoking to gain full physiologic benefit before surgery?
✔ Answer: 6–8 weeks
How soon after quitting smoking do short-term improvements in oxygenation and airway
responsiveness begin?
✔ Answer: 12–18 hours
True or False: Huntington’s disease shows increased sensitivity to both depolarizing and non-
depolarizing neuromuscular blockers.
✔ Answer: True
Fill in the blanks: ____ Na⁺ moves ___ ; ____ K⁺ moves ___ (Sodium-Potassium Pump)
✔ Answer: 3 Na⁺ out ; 2 K⁺ in
At what rate is cerebrospinal fluid (CSF) produced per hour?
✔ Answer: 21 cc/hr
What is the total volume of circulating CSF in an adult?
✔ Answer: 150 cc
Trace the correct flow path of cerebrospinal fluid (CSF):
✔ Answer: Choroid plexus → Lateral ventricles → Foramen of Monro → 3rd ventricle →
Aqueduct of Sylvius → 4th ventricle → Foramen of Magendie → Subarachnoid space → Brain
surface → Arachnoid villi
What is the normal mitral valve area in cm²?
✔ Answer: 4–6 cm²
What is the normal aortic valve area in cm²?
✔ Answer: 2.5–3.5 cm²
At what age range is the minimum alveolar concentration (MAC) highest?
✔ Answer: 6–12 months
, lOMoARcPSD| 54339004
Arrange these volatile anesthetics by metabolic breakdown (most to least):
✔ Answer: Sevoflurane > Isoflurane > Desflurane
What is the occupational exposure limit (PPM) for N₂O + other anesthetic gases combined?
✔ Answer: 0.5 PPM
What is the exposure limit (PPM) for halogenated anesthetic gases alone?
✔ Answer: 2 PPM
What is the maximum allowable occupational exposure to nitrous oxide (N₂O)?
✔ Answer: 25 PPM
What is the maximum number of times a laryngeal mask airway (LMA) can be reused?
✔ Answer: 40 uses
What is the name of the enzymatic cleaner used for LMAs?
✔ Answer: Endozime
At what temperature (°C) are LMAs sterilized?
✔ Answer: 135°C
What are the maximum recommended air volumes for LMA sizes?
✔ Answer: Size 2 – 10 mL; Size 3 – 20 mL; Sizes 4–5 – 40 mL
What is the maximum safe cuff pressure for an LMA (in cmH₂O)?
✔ Answer: 60 cmH₂O
List the methods of heat loss from greatest to least contribution during surgery:
✔ Answer: Radiation > Convection > Evaporation > Conduction
What are the typical soda lime components used in CO₂ absorption systems?
✔ Answer: 80% Ca(OH)₂, 15% H₂O, 4% NaOH, 1% KOH
What is the standard mesh size range for soda lime granules?
✔ Answer: 4–8 mesh
What is the formula for coronary perfusion pressure (CorPP)?
✔ Answer: CorPP = Aortic Diastolic Pressure – Left Ventricular End-Diastolic Pressure (ADP
– LVEDP)
2,5 - ANSWER✔✔Oxygen pin
NBCRNA Physiology, Pharmacology, and
Anesthesia Equipment QUESTIONS AND
ANSWERS Guide WITH VERIFIED SOLUTIONS
100% CORRECT RATED A+ NEWLY UPDATED
2025
How long should a patient stop smoking to gain full physiologic benefit before surgery?
✔ Answer: 6–8 weeks
How soon after quitting smoking do short-term improvements in oxygenation and airway
responsiveness begin?
✔ Answer: 12–18 hours
True or False: Huntington’s disease shows increased sensitivity to both depolarizing and non-
depolarizing neuromuscular blockers.
✔ Answer: True
Fill in the blanks: ____ Na⁺ moves ___ ; ____ K⁺ moves ___ (Sodium-Potassium Pump)
✔ Answer: 3 Na⁺ out ; 2 K⁺ in
At what rate is cerebrospinal fluid (CSF) produced per hour?
✔ Answer: 21 cc/hr
What is the total volume of circulating CSF in an adult?
✔ Answer: 150 cc
Trace the correct flow path of cerebrospinal fluid (CSF):
✔ Answer: Choroid plexus → Lateral ventricles → Foramen of Monro → 3rd ventricle →
Aqueduct of Sylvius → 4th ventricle → Foramen of Magendie → Subarachnoid space → Brain
surface → Arachnoid villi
What is the normal mitral valve area in cm²?
✔ Answer: 4–6 cm²
What is the normal aortic valve area in cm²?
✔ Answer: 2.5–3.5 cm²
At what age range is the minimum alveolar concentration (MAC) highest?
✔ Answer: 6–12 months
, lOMoARcPSD| 54339004
Arrange these volatile anesthetics by metabolic breakdown (most to least):
✔ Answer: Sevoflurane > Isoflurane > Desflurane
What is the occupational exposure limit (PPM) for N₂O + other anesthetic gases combined?
✔ Answer: 0.5 PPM
What is the exposure limit (PPM) for halogenated anesthetic gases alone?
✔ Answer: 2 PPM
What is the maximum allowable occupational exposure to nitrous oxide (N₂O)?
✔ Answer: 25 PPM
What is the maximum number of times a laryngeal mask airway (LMA) can be reused?
✔ Answer: 40 uses
What is the name of the enzymatic cleaner used for LMAs?
✔ Answer: Endozime
At what temperature (°C) are LMAs sterilized?
✔ Answer: 135°C
What are the maximum recommended air volumes for LMA sizes?
✔ Answer: Size 2 – 10 mL; Size 3 – 20 mL; Sizes 4–5 – 40 mL
What is the maximum safe cuff pressure for an LMA (in cmH₂O)?
✔ Answer: 60 cmH₂O
List the methods of heat loss from greatest to least contribution during surgery:
✔ Answer: Radiation > Convection > Evaporation > Conduction
What are the typical soda lime components used in CO₂ absorption systems?
✔ Answer: 80% Ca(OH)₂, 15% H₂O, 4% NaOH, 1% KOH
What is the standard mesh size range for soda lime granules?
✔ Answer: 4–8 mesh
What is the formula for coronary perfusion pressure (CorPP)?
✔ Answer: CorPP = Aortic Diastolic Pressure – Left Ventricular End-Diastolic Pressure (ADP
– LVEDP)
2,5 - ANSWER✔✔Oxygen pin
