The maximum inspiratory pressure is the highest atmospheric pressure developed during inspiration against an occluded airway. The maximum expiratory pressure is the highest pressure developed during expiration against an occluded airway.
Maximal Inspiratory Pressure (cm H2O)
predicted maximal inspiratory pressure, in cm of water for males 20 - 80 years old =
= 143 - (0.55 * (age in years))
predicted maximal inspiratory pressure, in cm of water for males 20 - 54 years old =
= 129 - (0.13 * (age in years))
predicted maximal inspiratory pressure, in cm of water for males 44 - 80 years old =
= 120 - (0.25 * (age in years))
predicted maximal inspiratory pressure, in cm of water for females 20 - 86 years old =
= 104 - (0.51 * (age in years))
predicted maximal inspiratory pressure, in cm of water for females 20 - 54 years old =
= 100 - (0.39 * (age in years))
predicted maximal inspiratory pressure, in cm of water for females 55 - 86 years old =
= 122 - (0.79 * (age in years))
Maximal Expiratory Pressure (cm H2O)
predicted maximal expiratory pressure, in cm of water for males 20 - 80 years old =
= 268 - (1.03 * (age in years))
predicted maximal expiratory pressure, in cm of water for males 20 - 54 years old =
= 229 + (0.08 * (age in years))
predicted maximal expiratory pressure, in cm of water for males 54 - 80 years old =
= 353 - (2.33 * (age in years))
predicted maximal expiratory pressure, in cm of water for females 20 - 86 years old =
= 170 - (0.53 * (age in years))
predicted maximal expiratory pressure, in cm of water for females 20 - 54 years old =
= 158 - (0.18 * (age in years))
predicted maximal expiratory pressure, in cm of water for females 55 - 86 years old =
= 210 - (1.14 * (age in years))
|
maximal inspiratory pressure |
maximal expiratory pressure |
poor effort |
decreased |
decreased |
fatigue |
decreased |
decreased |
neuromuscular disease |
decreased |
decreased |
increased lung volume |
decreased |
normal |
decreased lung volume |
normal |
decreased |
Specialty: Pulmonology
ICD-10: ,