Patient-ventilator dyssynchrony during assisted invasive mechanical ventilation

Area of Science:

• Critical Care Medicine
• Respiratory Therapy
• Biomedical Engineering

Background:

• Patient-ventilator dyssynchrony is a frequent complication during mechanical ventilation.
• Dyssynchrony negatively impacts patient comfort, ventilation duration, and intensive care unit (ICU) length of stay.
• It can manifest in various phases of the respiratory cycle, including triggering, inspiration, and expiration.

Purpose of the Study:

• To highlight the prevalence and consequences of patient-ventilator dyssynchrony.
• To identify common types of dyssynchrony, such as delayed triggering, autotriggering, and double triggering.
• To discuss current limitations in dyssynchrony detection and the need for improved synchronization strategies.

Main Methods:

• Review of existing literature on patient-ventilator interactions.
• Analysis of common dyssynchrony events and their impact.
• Discussion of current detection methods and technological challenges.

Main Results:

• Common dyssynchronies include delayed triggering, autotriggering, ineffective efforts, inspiratory time mismatch, and double triggering.
• Current detection relies on waveform analysis by staff, which is often suboptimal and leads to missed events.
• High levels of dyssynchrony are associated with prolonged mechanical ventilation duration.

Conclusions:

• Patient-ventilator dyssynchrony is a significant issue with detrimental clinical outcomes.
• Technological advancements are needed to enable continuous and accurate assessment of synchrony.
• Improving patient-ventilator synchrony necessitates enhanced staff training, advanced ventilatory modes, and sophisticated computerized systems.