Which of the following indicate a patient is ready to attempt unassisted ventilation?
A) MIP greater than -25 cm H20 and MEP greater than 50 cm H20
B) MIP greater than -25 mm Hg and MEP greater than 50 mm Hg
C) MIP lower than -25 cm H20 and MEP lower than 50 cm H20
D) MIP lower than -25 mm Hg and MEP lower than 50 mm Hg

Question

Quizplus · Accepted Answer

MIP (maximum inspiratory pressure) and MEP (maximum expiratory pressure) both indicate the strength of respiratory muscles. A value greater than -25 cm H20 for MIP and greater than 50 cm H20 for MEP indicate adequate strength to attempt unassisted ventilation. The other choices indicate inadequate strength. Additionally, the values given in B and D are in mm Hg, which is an incorrect unit for measuring respiratory pressures.

Which of the Following Indicate a Patient Is Ready to Attempt