RPFT Online Practice Questions and Answers

A 9-year-old girl had an FVC of 2.35 L1 year ago. She was 122 cm (4 ft) tall and weighed 29.5 kg (65 lb). Her current height is 127 cm (4 ft 2 in), and her weight is 34 kg (75 lb). The current FVC measurement is

2.20 L. The quality of both tests met ATS/ERS goals. A pulmonary function technologist should conclude the change is

A. Not significant since it is less than a 15% decrease.

B. Not significant since it is within normal test variability.

C. Significant since a decline is not expected.

D. Significant since her weight has changed.

Which of the following may cause a reduction in end-tidal CO2?

A. Increased VD/VT ratio

B. Anxiety-induced hyperventilation

C. Exercise below the anaerobic threshold

D. Eating a high-protein diet

A patient will undergo bronchial provocation testing with methacholine chloride (Provocholine). Baseline spirometry reveals the FVC is 4.00 L and FEV1 is 3.00 L. The provocative dose 20% (PD20) can be calculated when which of the following measurements occur?

A. The FVC falls below 3.20 L, or the FEV1 falls below 2.40 L.

B. The FEV, falls below 2.40 L, regardless of change in FVC.

C. The FVC falls below 3.20 L and the FEV1 falls below 2.40 L.

D. The ratio FEV1/FVC falls below 0.8.

At the end of a progressive exercise study of a healthy adult male, RER would be approximately what value?

A. 1.65

B. 0.83

C. 1.00

D. 1.25

Which of the following problems may be identified by using an isothermal lung analog to perform quality control on a body plethysmograph?

1.

Improperly calibrated mouth pressure transducer

2.

Obstructed or perforated pneumotachometer

3.

Increase in mechanical resistance

4.

Malfunctioning box pressure transducer

A. 3 and 4 only

B. 2 and 3 only

C. 1 and 4 only

D. 1 and 2 only

During an exercise (stress) test, the minute ventilation to carbon dioxide production (Ve /VCO2) ratio is

100. This measurement indicates

A. Severe pulmonary hypertension

B. A normal response

C. Equipment malfunction

D. Increased work of breathing

At maximum exercise, a 24-year-old patient's heart rate is 150/min with a VO2 of 750 mUmin. The calculated 02 pulse is most consistent with which of the following?

A. cystic fibrosis

B. cardiomyopathy

C. achievement of anaerobic threshold

D. deconditioning

A government agency requires that a pulmonary function technologist establish procedures to minimize the loss of laboratory data. Which of the following should be included in these procedures?

1.

Continuous mirroring of hard drives

2.

Storage of duplicate test data offsite

3.

No Internet connections to the computer storing the database

4.

Contracting with a third-party security company

A. 2, 3, and 4 only

B. 1, 3, and 4 only

C. 1, 2, and 4 only

D. 1, 2, and 3 only

Which of the following is a suitable policy for following Standard Precautions in a pulmonary function laboratory?

A. Eye protection is required when obtaining ABGs from patients with hepatitis.

B. Reusable mouthpieces should be disposed when a patient has a history of tuberculosis.

C. Gloves are optional when obtaining arterial blood samples using a kit

D. Reusable mouthpieces should be disinfected between each patient.

During daily quality control procedures on an infrared CO2 analyzer, a pulmonary function technologist is unable to adjust the gain to the calibration gas concentration. Which of the following is the most likely explanation?

A. Water droplets in the sample cell

B. Saturation of the soda lime

C. Presence of high levels of oxygen

D. Increased gas sampling rate