How to use an incentive spirometer

Incentive spirometer

After surgery, it may be difficult to breathe as you normally do. You may notice your breathing changes to small, shallow breaths. This can cause fluid and mucus to build up in your lungs, increasing your risk for respiratory system complications.

An incentive spirometer is a hand-held breathing exercise device to help you breathe deeply. Taking deep breaths allows air to inflate your lungs, opening your airways to prevent fluid and mucus buildup.

Using an incentive spirometer may speed your recovery and lower your risk of lung problems such as pneumonia.

How to use the incentive spirometer

  1. Sit upright in a chair with your feet flat on the floor. (If you are not able to sit up in a chair, sit as upright as possible.)
  2. Place the spirometer on your bedside table or hold it in an upright position.
  3. Place the mouthpiece in your mouth. Seal your lips tightly around the mouthpiece.
  4. Inhale as slowly and deeply as possible through the mouthpiece. Your health care provider will work with you to set a breathing goal, which will be marked with small arrows on the incentive spirometer. As you inhale, the small square should stay between the arrows.
  5. Hold your breath for three to five seconds. Then exhale slowly through pursed lips. (Pursed lips are in the shape of blowing out a candle.)
  6. Repeat 10 times, resting between each time.
  7. It is important to cough to clear any secretions. Coughing (clearing your airway) will make breathing easier. It will also strengthen your muscles after each use.

How often you need to use the incentive spirometer

  • At the hospital: You will need to use the incentive spirometer 10 times every hour you are awake after surgery.
  • At home: You will need to use the incentive spirometer 10 times every two hours for your first seven days at home.

Source: Allina Health's Patient Education Department, Knee Replacement, seventh edition, ortho-ah-90140
First Published: 10/01/2000
Last Reviewed: 02/01/2020