Which of the following terms or expressions describes the presence of end-expiratory lung volume above the passive functional residual capacity?
A. elastance
B. compliance
C. dynamic hyperinflation
D. patient-ventilator dyssynchrony
?ANS: C
A. Incorrect response: Elastance is the reciprocal of compliance.
B. Incorrect response: Compliance refers to the ease of lung distensibility.
C. Correct response: The term dynamic hyperinflation is an increase in the functional residual capacity above the elastic equilibrium volumes of the respiratory system.
D. Incorrect response: Patient-ventilator dyssynchrony refers to a situation in which either the patient is out of phase with the ventilator, or when the ventilator is out of phase with the patient.
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