Validation of a technique to assess maximal inspiratory pressure in poorly cooperative patients. Chest 1992 Oct;102(4):1216-9
Date
10/01/1992Pubmed ID
1395771DOI
10.1378/chest.102.4.1216Scopus ID
2-s2.0-0026764873 (requires institutional sign-in at Scopus site) 56 CitationsAbstract
The maximal pressure that can be generated during an inspiratory effort against an occluded airway serves as an index of respiratory muscle strength. We devised a method that permits accurate measurement of MIP, with near maximal values, and does not require patient cooperation. Twenty-two critically ill intubated patients performed MIP maneuvers before and after coaching. For the initial 11 patients, MIP was measured after the airway was occluded in 20 s with a one-way valve that permitted only exhalation. In the latter 11 patients, DS (approximately 1/3 VT) was added in an effort to increase respiratory drive before the noncoached MIP maneuver. We found no significant difference between coached and noncoached MIP maneuvers when P0.1 during the first 100 ms of inspiratory efforts prior to the noncoached MIP maneuver was greater than 2 cm H2O. Thus, MIP can be reliably measured in critically ill patients with or without coaching.
Author List
Truwit JD, Marini JJMESH terms used to index this publication - Major topics in bold
AdultAged
Critical Illness
Female
Humans
Intensive Care Units
Male
Middle Aged
Patient Compliance
Pressure
Pulmonary Ventilation
Respiration, Artificial
Respiratory Dead Space
Respiratory Function Tests
