Chapter 08: Assessment of Pulmonary Function

Chapter 08: Assessment of Pulmonary Function

 

Complete Chapter Questions With Answers

 

Sample Questions Are Posted Below

 

MULTIPLE CHOICE

 

1. The accuracy of an instrument depends on which of the following?
2. The standard deviation of repeated measurements
3. The instrument’s linearity and frequency response
4. The instrument’s ability to reproduce a measurement
5. The instrument’s sensitivity to environmental conditions

a.	1 and 2	c.	2 and 3
b.	1 and 3	d.	2 and 4

 

 

ANS:  D

Accuracy can be explained as how closely a measured value is related to the correct value of the quantity measured. The accuracy of any instrument depends on its linearity and frequency response, its sensitivity to environmental conditions, and how well it is calibrated.

 

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2. The precision of an instrument depends on:

a.	linearity.	c.	repeatability.
b.	calibration.	d.	frequency of response.

 

 

ANS:  C

An instrument’s precision can be quantified by calculating the standard deviation of repeated measurements. Precision is the expression of an instrument’s ability to reproduce a measurement.

 

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3. Which of the following is a volume-collecting device?

a.	Turbine flowmeter	c.	Dry rolling seal spirometer
b.	Thermal anemometer	d.	Pressure pneumotachograph

 

 

ANS:  C

A typical example of a volume-collecting device is a dry rolling seal spirometer. The other devices are flow-sensing devices.

 

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4. Airflow is measured by which of the following?

a.	“Hot-wire” anemometer	c.	Water-sealed spirometer
b.	Bellows spirometer	d.	Dry rolling seal spirometer

 

 

ANS:  A

A typical example of a flow-sensing device is a hot-wire, or thermal, anemometer. The other devices are volume-collecting devices.

 

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5. The rotating motor-driven drum used to document the bell movement of a water-sealed spirometer is known as which of the following?

a.	Spirograph	c.	Anemometer
b.	Kymograph	d.	Pneumotachograph

 

 

ANS:  B

This is the definition of a kymograph.

 

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