About The Airway Ledger

The Airway Ledger is an independent trade magazine about the single-use devices that move gas to a patient. It covers ventilator and anaesthesia breathing circuits, filters and humidification, and the interfaces that reach the airway, from CPAP masks and bubble CPAP to nebulizer kits and catheter mounts. It is written for the people who handle those devices: intensive care and neonatal nurses, respiratory therapists, anaesthesia providers, biomedical engineers, procurement teams and students of respiratory care.

What this site is and is not

This is an editorial magazine, not a catalogue and not a company website. It does not sell anything, it publishes no price list and it does not take orders. The manufacturers, brands and organisations named in its pages are described in the third person and are not affiliated with this site. Where a product or a standard is mentioned, it is explained so that a clinician can understand it, not recommended for purchase.

How the guides are written

Each guide explains one subject plainly: what a device is, how it works, where it sits in the circuit and what the clinician checks at the bedside. Where a figure is given, it comes from a named source, such as an international standard or a published study, and the source is linked so you can read it yourself. Where the evidence is limited, the guide says so rather than filling the gap with a confident claim. The aim is to be useful to someone standing at a ventilator, not to impress a search engine.

Sources and corrections

The guides draw on international standards including ISO 5367 for breathing sets and connectors, ISO 23328 for breathing system filters and ISO 9360 for heat and moisture exchangers, on published clinical and bench studies, and on manufacturer disclosures filed with regulators. If you find an error, an outdated figure or a source that no longer supports a statement, write to the editorial team using the contact page. Corrections are made on the page, and the date of the change is recorded.

The editorial team

The Airway Ledger is written by an editorial team and signed collectively. There is no individual byline, because the magazine speaks as a publication rather than as a person, and it has no clinical practice of its own. It is a reference to be read alongside local policy, manufacturer instructions and the judgement of the clinical team in front of the patient.