A comparison of functional residual capacity measured by body plethysmography with that measured by
nitrogen washout reveals that the measurement obtained during the nitrogen washout test is less than that during body plethysmography. This discrepancy is most likely caused by which of the following?
a. Poor technique c. Restrictive lung disease
b. Severe air-trapping d. Directional valve malfunction
ANS: B
Severe air-trapping will produce lower functional residual capacity results than body plethys-mography because the nitrogen washout test measures gas volumes only in communicating air-ways.
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The airway is divided into the upper and lower airway.
Answer the following statement true (T) or false (F)
Special biohazard bags should be used for: a. storing dangerous chemicals
b. discarding waste that contains body fluids. c. collecting used needles. d. gathering instruments that will be autoclaved.
A "misbranded" drug means:
that the label does not contain directions for use that it was prepared in unsanitary conditions that it contains unsafe additives that it differs in strength from what is represented
____ is contraindicated during pregnancy because of its abortifacient property
A) Sucralfate B) Famotidine C) Misoprostol D) Calcium carbonate