What is the evidence base for the newer ventilation modes?

Area of Science:

• Critical Care Medicine
• Respiratory Physiology

Background:

• New mechanical ventilation modes are frequently introduced to address clinical challenges and for marketing purposes.
• There is a lack of comprehensive evidence, including bench, animal, and patient testing, supporting the superiority of newly introduced ventilation modes.
• The cost of extensive testing for new ventilation modes is often prohibitive for the industry.

Purpose of the Study:

• To review recently introduced mechanical ventilation modes.
• To critically evaluate the evidence supporting the claims made for these new ventilation modes.
• To differentiate between evidence-based benefits and marketing-driven assertions for novel ventilation strategies.

Main Methods:

• Literature review of newer mechanical ventilation modes.
• Analysis of existing studies, including observational trials and surrogate variable outcomes.
• Assessment of evidence quality regarding oxygenation, work of breathing, and patient comfort.

Main Results:

• Many new ventilation modes are introduced with limited empirical validation.
• Evidence often relies on small trials focusing on surrogate endpoints rather than definitive clinical outcomes.
• Claims of superiority are frequently based on anecdotal evidence or less tangible patient-reported variables.

Conclusions:

• A critical appraisal of evidence is necessary when evaluating new mechanical ventilation modes.
• The current landscape often prioritizes marketing over robust scientific validation for novel ventilation techniques.
• Clinicians must carefully discern evidence from claims when adopting new ventilation strategies.