Curves skewed that are referred to as skewed to the left have a negative skewness.

A patient has mild stridor immediately after extubation. This finding is most often associated with

A. lower airway obstruction. B. secretions in the large airways. C. upper airway obstruction. D. bronchial spasm.

Which of the following devices can a patient with asthma use in the home to monitor daily varia-tions in Raw?

a. Thermal flowmeter c. Screen pneumo-tachograph b. Fleisch pneumo-tachograph d. Vortex ultrasonic flowmeter