CRE Respiratory Therapy & Intervention Techniques 3

Question 1

When using a dry powder inhaler (DPI), which patient technique error most commonly reduces drug delivery to the lungs?

Accepted Answer

Inhaling too slowly and with insufficient force

Answer

DPIs require a rapid, forceful inspiratory flow (usually >60 L/min) to de-aggregate the powder into respirable particles; slow inhalation leaves drug in the device.

Question 2

A respiratory educator is teaching a patient how to perform autogenic drainage (AD). Which description best explains the technique?

Accepted Answer

Using controlled breathing at different lung volumes to mobilize mucus by varying airflow velocity

Answer

Autogenic drainage uses tidal breathing at low, middle, and high lung volumes to create shear forces that progressively loosen and move mucus centrally without coughing.

Question 3

Which inhaled corticosteroid (ICS) side effect is most directly related to local oropharyngeal deposition of the drug?

Accepted Answer

Oropharyngeal candidiasis

Answer

Topical deposition of ICS in the oropharynx suppresses local immunity and promotes Candida albicans overgrowth; rinsing and spitting after use reduces this risk.

Question 4

In a patient receiving volume-controlled ventilation, a sudden increase in peak airway pressure with no change in plateau pressure most likely indicates:

Accepted Answer

Increased airway resistance (e.g., bronchospasm or secretions)

Answer

A rise in peak pressure without a change in plateau pressure reflects increased resistance in the conducting airways, not a change in lung tissue compliance.

Question 5

Which is the correct sequence for performing a directed (huff) cough technique?

Accepted Answer

Deep breath → 2–3-second breath hold → open glottis → forced exhalation ('huff')

Answer

The huff cough (forced expiration technique) uses a deep breath, a brief hold to distribute air, then a rapid exhalation with an open glottis to mobilize secretions while minimizing airway collapse.

(CRE) Certified Respiratory Educator Practice Test

(CRE) Certified Respiratory Educator Practice Test

CRE Respiratory Therapy & Intervention Techniques 3