[Jul 31, 2025] New 2025 NBRC RPFT Exam Dumps with PDF from ValidExam (Updated 117 Questions) [Q23-Q43]

NEW QUESTION 23
Which of the following thresholds for a clinically significant change in lung function from the beginning to the end of a methacholine challenge test is significant?

NEW QUESTION 24
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?

NEW QUESTION 25
Prior to an exercise study, a pulmonary function technologist finds that the patient’s RER is 1.13. Which of the following best explains this finding?

NEW QUESTION 26
While reviewing exercise data, a pulmonary function technologist notes that the patient’s anaerobic threshold occurred at 35% of the patient’s VO2MAX. This indicates the patient has

NEW QUESTION 27
Which of the following is an appropriate reason to perform a multiple-breath nitrogen washout test?

NEW QUESTION 28
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

NEW QUESTION 29
A physician orders smoking cessation counseling for a 60-year-old male with a new diagnosis of CHF and COPD. The patient has failed several attempts to quit smoking using nicotine gum. Which of the following should a pulmonary function technologist recommend?

NEW QUESTION 30
When performing quality control in a body plethysmograph using a 5-L isothermal bottle, the VTG at shutter closure are as follows:

A pulmonary function technologist should

NEW QUESTION 31
During an exercise study, the RER will equal the RQ only when the patient is at

NEW QUESTION 32
A patient’s vital capacity is slightly reduced, the FEWFVC is normal, and the uncorrected DLco is increased.
Which of the following is the most likely diagnosis?

NEW QUESTION 33
A body plethysmograph box pressure transducer fails the electronic calibration check after multiple attempts.
Which of the following should a pulmonary function technologist do?
1. Perform a biologic control test
2. Inspect the door seal.
3. Re-zero the box pressure transducer.
4. Perform a physical pressure calibration.

NEW QUESTION 34
The following blood gas report is questioned by the attending physician:

Which of the following values is INCONSISTENT?

NEW QUESTION 35
In setting up a CO analyzer, a pulmonary function technologist notices that the analyzer reads -0.03 while sampling air. The technologist should

NEW QUESTION 36
Which of the following is the most reliable method to estimate the effectiveness of standard procedures to minimize the risk of cross-contamination during spirometry testing in a pulmonary function laboratory?

NEW QUESTION 37
During an exercise study, a pulmonary function technologist notices the systolic blood pressure increased to
270 mm Hg using an automated cuff. Which of the following should the technologist do?

NEW QUESTION 38
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

NEW QUESTION 39
During a bronchial provocation study, a patient has the following spirometric values after a
0.25 mg/mL dose of methacholine:

Based on these results, a pulmonary function technologist should

NEW QUESTION 40
In a patient with neuromuscular disease, which of the following is the best way to detect airway obstruction?

NEW QUESTION 41
A pulmonary function technologist can calculate which of the following if values for pH, PaO2, SaO2, SvO2 PvO2, VO2, and Hb are obtained?

NEW QUESTION 42
An isothermal lung analog has the following specifications:
5-L glass bottle
2000 g of steel wool
Density of steel wool 5 g/cm3
Volume of connectors and bulb 100 mi-Repeated FRC measurements in the plethysmograph result in a volume of 5.5 L.
Which of the following should a pulmonary function technologist do?

NEW QUESTION 43
While performing a quality control test on an open circuit nitrogen system, the volume of a 3-liter syringe is measured as 3.9 L. Which of the following is the most probable explanation?