What is the typical maximum inspiratory pressure value in healthy individuals?

What is the typical maximum inspiratory pressure value in healthy individuals?

• A. 160 cm H2O
• B. 80 cm H2O
• C. 83%
• D. 4.8 L

Answer: (B)

Maximal inspiratory pressure shows how strong the muscles are during a forced inhale against an occluded airway. In healthy adults, this pressure is about 80 cm H2O in magnitude (often noted as roughly -80 cm H2O since it's a negative pressure during inspiration). The other options don’t fit because 160 cm H2O would be unusually high for a healthy person, 83% is not a pressure unit, and 4.8 L is a volume, not a pressure.

Maximal inspiratory pressure shows how strong the muscles are during a forced inhale against an occluded airway. In healthy adults, this pressure is about 80 cm H2O in magnitude (often noted as roughly -80 cm H2O since it's a negative pressure during inspiration). The other options don’t fit because 160 cm H2O would be unusually high for a healthy person, 83% is not a pressure unit, and 4.8 L is a volume, not a pressure.