Inspired Volume Spiro Ball: What It Shows and How to Use It

An inspired volume spiro ball gives visual feedback about how deeply and steadily you breathe in. It is commonly used for breathing practice after illness, surgery, or a period of limited movement, but the device itself does not diagnose a lung condition.

The ball rises when air flows through the device as you inhale. Keeping it in the suggested zone encourages a smooth, sustained breath rather than a sudden gasp. The result can be affected by discomfort, tiredness, chest pain, cough, or a poorly sealed mouthpiece, so one reading is not a complete measure of lung health.

Sit upright and relax your shoulders. Seal your lips around the mouthpiece, then breathe in slowly through it while watching the indicator. Hold the breath briefly if your clinician has advised this, remove the mouthpiece, and breathe out normally. Rest between attempts if you feel light-headed. Clean and store the device according to the supplied instructions, and use the target set by your healthcare professional rather than comparing your result with another person’s.

Stop and seek urgent medical help for severe or rapidly worsening breathlessness, blue or grey lips, fainting, new confusion, or chest pain that is severe or persistent. Contact your clinician promptly if breathing becomes harder, fever or a worsening cough develops, or you repeatedly cannot use the device as instructed.

Ask what target range and practice schedule apply to you, whether pain or recent surgery changes the technique, and how to clean the mouthpiece. Ask whether a spirometer or formal spirometry is needed to assess your breathing more fully.