PCT Oxygen and Respiratory Assistance 3

Question 1

A simple face mask delivers oxygen at what concentration range?

Accepted Answer

35-60%

Answer

A simple face mask delivers 35-60% FiO2 at flow rates of 6-10 L/min, providing moderate oxygen concentrations.

Question 2

Pursed-lip breathing is beneficial for patients with COPD because it:

Accepted Answer

Creates back pressure that keeps airways open longer during exhalation

Answer

Pursed-lip breathing creates positive pressure during exhalation that prevents small airways from collapsing, allowing more complete air emptying.

Question 3

Which sign indicates a patient is experiencing respiratory distress?

Accepted Answer

Use of accessory muscles and nasal flaring

Answer

Use of accessory muscles (neck, shoulders, intercostals) and nasal flaring indicate the patient is working harder than normal to breathe.

Question 4

When collecting a sputum specimen, the patient should be instructed to:

Accepted Answer

Take several deep breaths and cough deeply to bring up secretions from the lungs

Answer

Deep coughing produces sputum from the lower respiratory tract, which is needed for accurate culture and sensitivity testing.

Question 5

Oxygen should be humidified when delivered at flow rates above:

Accepted Answer

4 L/min

Answer

Flow rates above 4 L/min dry the mucous membranes of the nose and airway, making humidification necessary for patient comfort and airway protection.

Patient Care Technician Test Practice Test