Which description best describes incentive spirometer usage?

• A. Exhale into device
• B. Inhale deeply and slowly through mouthpiece, hold 3-5 seconds, exhale normally
• C. Inhale through nose
• D. Use while coughing

Answer: (B)

Incentive spirometry aims to promote slow, deep breaths to expand the lungs and prevent atelectasis after surgery or during limited ventilation. The best technique is to inhale deeply and slowly through the mouthpiece, watch the indicator rise, hold the breath for 3–5 seconds to maximize lung expansion, then exhale normally. This breath-holding moment helps keep air in the lungs longer and improves alveolar ventilation. Inhaling through the nose won’t activate the device properly, exhaling into the device isn’t how it’s used, and while you might use the device between coughing, it’s not performed during the cough itself. Use while seated upright and complete several breaths per hour as prescribed.