Patient-ventilator interactions(PVI)

PVI during NIV

NIV has a solid base of evidence for its indications but deserves a considerable amount of attention to keeping the patient comfortable and the interface synchronous. NIV may be under-utilised secondary to suboptimal clinical use. 

Potential causes of NIV failure include

- Poor patient selection

- Progression of underlying disease

- Patient-Ventilator-Asynchrony due to:

     - Wrong interface (size, leak)

     - Wrong ventilator (poor leak compensation)

     - Suboptimal ventilator settings 

- Clinician inexperience

asynchrony index

An asynchrony index (AI) of > 10% is considered severe.

A large leak and a high amount of pressure support are associated with a high AI.

Patient-ventilator asynchrony (PVA) Definitions

Contact/Suggestions

Juerg Burren, MBBS MD FMH (CH) EPIC FCICM

Paediatric Intensivist and Ventilation Enthusiast

​​

Tel: +61 (0) 481 751 073

info@pivares.com

© 2019-2020 by Juerg Burren for PIVARES

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