Foreword

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This document was prepared by Technical Committee ISO/TC 121, Anaesthetic and respiratory equipment, Subcommittee SC 4, Vocabulary and semantics.

A list of all parts in the ISO 19223 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user’s national standards body. A complete listing of these bodies can be found at www.iso.org/members.html.

Introduction

After publication of ISO 19223:2019 and ISO 4135:2022 (5th ed.), it was recognized that these new standards did not adequately address vocabulary and semantics for high-frequency and jet lung ventilation and some aspects of respiratory therapy equipment. Therefore, specialized vocabularies have been developed as additional parts of the ISO 19223 series. The second edition of ISO 19223 is intended to be subsequently published as ISO 19223-1. A standard for high-frequency and jet ventilation terminology has been published as ISO 19223-2:2025. This document addresses terminology for high-flow respiratory therapy, sleep apnoea breathing therapy, as well as other aspects of respiratory care.

Included with many of the terms are notes to entry that provide supplementary information, including explanations of the semantics of the terms along with their classification schemes.

Some of the terms in this document are principally intended for technical documents, informatics and related applications, and might have little applicability to ventilator labelling and instructions for use.

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.

2 Normative references

3 Terms and definitions

3.1 General terms

3.2 Respiratory high-flow therapy equipment terminology

3.3 Sleep apnoea breathing therapy equipment terminology

3.4 Respiratory therapy masks and accessories terminology

3.5 Neonatal respiratory therapy equipment terminology

Bibliography