1 Scope

This document defines terms for respiratory care.

This document is applicable:

• in respiratory high-flow therapy equipment standards;

• in sleep apnoea breathing therapy equipment standards;

• in sleep apnoea breathing therapy masks and accessories standards;

• in ventilatory support equipment standards;

• in health informatics standards;

• for labelling on medical electrical equipment and medical electrical systems;

• in medical electrical equipment and medical electrical system instructions for use and accompanying documents;

• for medical electrical equipment and medical electrical systems interoperability;

• in electronic health records.

This document excludes mechanical ventilation (defined in ISO 19223:2019), high-frequency and jet ventilation (defined in ISO 19223‑2:2025), negative pressure ventilation, liquid ventilation, and extracorporeal membrane oxygenation.