Ruppel’s Manual of Pulmonary Function Testing
11th Edition TEST BANK 2025/2026 || VERIFIED
QUESTIONS AND COMPLETE SOLUTIONS <LATEST
VERSION>
Ruppel’s Manual of Pulmonary Function Testing 11th Edition - Test Bank
1. What is the primary purpose of performing pre-test calibration of a spirometer?
a) To ensure the patient's safety
b) To verify the accuracy and precision of the measuring device
c) To establish a patient baseline
d) To comply with insurance requirements
Answer: b) To verify the accuracy and precision of the measuring device
Rationale: Calibration is a quality control procedure that compares the instrument's
measurement to a known standard, ensuring data accuracy before testing a patient.
2. According to ATS/ERS standards, how many acceptable spirometry maneuvers should be
obtained to ensure reproducibility?
a) At least 2
b) At least 3
,c) At least 5
d) At least 8
Answer: b) At least 3
Rationale: A minimum of three acceptable maneuvers are required. The two best FVC and FEV1
values should be within 0.150 L of each other to meet reproducibility criteria.
3. The FEV1/FVC ratio is used to primarily determine the presence of:
a) Restrictive lung disease
b) Obstructive lung disease
c) Pulmonary vascular disease
d) Respiratory muscle weakness
Answer: b) Obstructive lung disease
Rationale: A reduced FEV1/FVC ratio indicates airflow limitation, which is the hallmark of
obstructive lung diseases like asthma and COPD.
4. Which lung volume cannot be measured by simple spirometry?
a) Tidal Volume (VT)
b) Expiratory Reserve Volume (ERV)
c) Residual Volume (RV)
d) Inspiratory Reserve Volume (IRV)
Answer: c) Residual Volume (RV)
Rationale: RV is the air remaining in the lungs after a maximal expiration. It requires techniques
like body plethysmography, gas dilution, or gas washout to measure.
,5. In body plethysmography, what law is applied to calculate thoracic gas volume (TGV)?
a) Henry's Law
b) Boyle's Law
c) Charles's Law
c) Dalton's Law
Answer: b) Boyle's Law
Rationale: Boyle's Law (P1 * V1 = P2 * V2) states that pressure and volume are inversely
proportional at a constant temperature, which is the principle used in the plethysmograph to
measure lung volume.
6. A patient with a reduced FVC, normal FEV1/FVC ratio, and reduced TLC would most likely
have:
a) Obstructive lung disease
b) Mixed obstructive and restrictive disease
c) Restrictive lung disease
d) Normal pulmonary function
Answer: c) Restrictive lung disease
Rationale: A reduced TLC is the defining characteristic of restrictive disease. The normal
FEV1/FVC ratio rules out pure obstruction, and the reduced FVC is consistent with restriction.
7. The single-breath diffusing capacity test (DLCO) primarily measures:
a) The efficiency of alveolar ventilation
b) The strength of the respiratory muscles
c) The ability of gas to transfer from the alveoli to the pulmonary capillaries
, d) The degree of airway reactivity
Answer: c) The ability of gas to transfer from the alveoli to the pulmonary capillaries
Rationale: DLCO measures the conductance of carbon monoxide across the alveolar-capillary
membrane, reflecting the integrity of the interface for gas exchange.
8. A reduced DLCO value is seen in all of the following EXCEPT:
a) Emphysema
b) Pulmonary fibrosis
c) Pulmonary hypertension
d) Severe asthma without remodeling
Answer: d) Severe asthma without remodeling
Rationale: Asthma typically presents with a normal or even elevated DLCO. A reduced DLCO
suggests parenchymal destruction (emphysema), thickening (fibrosis), or vascular pathology (
hypertension).
9. For which of the following conditions is bronchodilator testing most commonly indicated?
a) Idiopathic Pulmonary Fibrosis
b) Cystic Fibrosis
c) Asthma
d) Pneumonia
Answer: c) Asthma
Rationale: Bronchodilator testing assesses for reversible airflow obstruction, which is a key
feature of asthma. A positive test supports the diagnosis.
11th Edition TEST BANK 2025/2026 || VERIFIED
QUESTIONS AND COMPLETE SOLUTIONS <LATEST
VERSION>
Ruppel’s Manual of Pulmonary Function Testing 11th Edition - Test Bank
1. What is the primary purpose of performing pre-test calibration of a spirometer?
a) To ensure the patient's safety
b) To verify the accuracy and precision of the measuring device
c) To establish a patient baseline
d) To comply with insurance requirements
Answer: b) To verify the accuracy and precision of the measuring device
Rationale: Calibration is a quality control procedure that compares the instrument's
measurement to a known standard, ensuring data accuracy before testing a patient.
2. According to ATS/ERS standards, how many acceptable spirometry maneuvers should be
obtained to ensure reproducibility?
a) At least 2
b) At least 3
,c) At least 5
d) At least 8
Answer: b) At least 3
Rationale: A minimum of three acceptable maneuvers are required. The two best FVC and FEV1
values should be within 0.150 L of each other to meet reproducibility criteria.
3. The FEV1/FVC ratio is used to primarily determine the presence of:
a) Restrictive lung disease
b) Obstructive lung disease
c) Pulmonary vascular disease
d) Respiratory muscle weakness
Answer: b) Obstructive lung disease
Rationale: A reduced FEV1/FVC ratio indicates airflow limitation, which is the hallmark of
obstructive lung diseases like asthma and COPD.
4. Which lung volume cannot be measured by simple spirometry?
a) Tidal Volume (VT)
b) Expiratory Reserve Volume (ERV)
c) Residual Volume (RV)
d) Inspiratory Reserve Volume (IRV)
Answer: c) Residual Volume (RV)
Rationale: RV is the air remaining in the lungs after a maximal expiration. It requires techniques
like body plethysmography, gas dilution, or gas washout to measure.
,5. In body plethysmography, what law is applied to calculate thoracic gas volume (TGV)?
a) Henry's Law
b) Boyle's Law
c) Charles's Law
c) Dalton's Law
Answer: b) Boyle's Law
Rationale: Boyle's Law (P1 * V1 = P2 * V2) states that pressure and volume are inversely
proportional at a constant temperature, which is the principle used in the plethysmograph to
measure lung volume.
6. A patient with a reduced FVC, normal FEV1/FVC ratio, and reduced TLC would most likely
have:
a) Obstructive lung disease
b) Mixed obstructive and restrictive disease
c) Restrictive lung disease
d) Normal pulmonary function
Answer: c) Restrictive lung disease
Rationale: A reduced TLC is the defining characteristic of restrictive disease. The normal
FEV1/FVC ratio rules out pure obstruction, and the reduced FVC is consistent with restriction.
7. The single-breath diffusing capacity test (DLCO) primarily measures:
a) The efficiency of alveolar ventilation
b) The strength of the respiratory muscles
c) The ability of gas to transfer from the alveoli to the pulmonary capillaries
, d) The degree of airway reactivity
Answer: c) The ability of gas to transfer from the alveoli to the pulmonary capillaries
Rationale: DLCO measures the conductance of carbon monoxide across the alveolar-capillary
membrane, reflecting the integrity of the interface for gas exchange.
8. A reduced DLCO value is seen in all of the following EXCEPT:
a) Emphysema
b) Pulmonary fibrosis
c) Pulmonary hypertension
d) Severe asthma without remodeling
Answer: d) Severe asthma without remodeling
Rationale: Asthma typically presents with a normal or even elevated DLCO. A reduced DLCO
suggests parenchymal destruction (emphysema), thickening (fibrosis), or vascular pathology (
hypertension).
9. For which of the following conditions is bronchodilator testing most commonly indicated?
a) Idiopathic Pulmonary Fibrosis
b) Cystic Fibrosis
c) Asthma
d) Pneumonia
Answer: c) Asthma
Rationale: Bronchodilator testing assesses for reversible airflow obstruction, which is a key
feature of asthma. A positive test supports the diagnosis.
