Q: Which of the following formulas is used to calculate the partial pressure of oxygen in arterial blood ($$PaO_2$$)?

$$PaO_2$$ = $$FiO_2$$ \times (Patm - PH_2O) - $$PaCO_2 / R$

Question 1

Which of the following best describes the primary function of the respiratory system in maintaining homeostasis?

Accepted Answer

Supplying oxygen to the blood and eliminating excess carbon dioxide to maintain the acid-base balance of arterial blood

Question 2

A patient presents with a respiration rate of 40 breaths per minute. Which term best describes this finding?

Accepted Answer

Tachypnoea

Question 3

During a respiratory assessment, you note the patient has a productive cough, wheezing, and cyanosis. Which of the following is the most immediate concern?

Accepted Answer

Cyanosis

Question 4

Which structure is responsible for sound production in the upper respiratory system?

Accepted Answer

Larynx

Question 5

A patient with chronic obstructive pulmonary disease (COPD) is at risk for hypercapnia. What does hypercapnia refer to?

Accepted Answer

High carbon dioxide levels in the blood

Question 6

Which equation best represents the relationship between ventilation, perfusion, and gas exchange in the alveoli?

Accepted Answer

$$V_A / Q$$

Question 7

Which of the following is NOT a normal breath sound heard during auscultation in adults?

Accepted Answer

Crackles

Question 8

A nurse is preparing to administer salbutamol via a metered dose inhaler (MDI) with a spacer. What is the primary advantage of using a spacer?

Accepted Answer

It reduces the risk of oral thrush by minimizing medication deposition in the mouth

Question 9

Which developmental consideration is most relevant when assessing the upper respiratory system of an older adult?

Accepted Answer

Atrophic oral tissues increasing risk for infection and lesions

Question 10

A patient presents with altered taste, hoarseness, and dysphagia. Which anatomical region should be the primary focus of your assessment?

Accepted Answer

Mouth and throat

Question 11

Which of the following findings is considered an adventitious breath sound?

Accepted Answer

Crackles

Question 12

During percussion of the lungs, which finding would most likely indicate the presence of a pleural effusion?

Accepted Answer

Dullness

Question 13

Which of the following is a key subjective data point to collect during a respiratory assessment?

Accepted Answer

History of respiratory infections

Question 14

A patient with a history of smoking presents with persistent cough and haemoptysis. What does haemoptysis refer to?

Accepted Answer

Coughing up blood

Question 15

Which anatomical difference between the right and left lungs is clinically significant during respiratory assessment?

Accepted Answer

The right lung has three lobes, while the left lung has two lobes

Question 16

Which of the following formulas is used to calculate the partial pressure of oxygen in arterial blood ($$PaO_2$$)?

Accepted Answer

$$PaO_2$$ = $$FiO_2$$ 	imes (Patm - PH_2O) - $$PaCO_2 / R$

Question 17

Which of the following is a common abnormal thoracic finding associated with chronic respiratory disease?

Accepted Answer

Barrel chest

Question 18

A patient is found to have hypoxaemia. Which of the following best describes this condition?

Accepted Answer

Low oxygen levels in the blood

Question 19

Which of the following is the correct sequence for collecting objective data during a respiratory assessment?

Accepted Answer

Inspection, palpation, percussion, auscultation

Question 20

A patient with asthma is prescribed salbutamol via a metered dose inhaler. What is the primary pharmacological action of salbutamol?

Accepted Answer

It relaxes bronchial smooth muscle, leading to bronchodilation

Respiratory Assessment: Anatomy, Physiology, and Clinical Evaluation

Study Guide - Practice Questions

Study Guide - Flashcards