Liquid ventilation

Area of Science:

• Pulmonary Medicine
• Biomedical Engineering
• Respiratory Physiology

Background:

• Liquid ventilation research for artificial respiration in mammals dates back to the 1960s.
• Perfluorocarbon (PFC) liquids enable gas exchange due to their high oxygen and carbon dioxide solubility.
• Partial liquid ventilation (PLV), introduced in 1991, involves instilling PFCs into the lungs during mechanical ventilation.

Purpose of the Study:

• To review the current state of partial liquid ventilation (PLV) as a therapeutic approach.
• To highlight the potential benefits and remaining questions regarding PLV in respiratory support.
• To discuss the various applications of perfluorocarbons in respiratory medicine.

Main Methods:

• Review of historical research and development in liquid ventilation.
• Analysis of findings from animal models of acute lung injury and surfactant deficiency.
• Examination of results from uncontrolled trials in preterm neonates and a randomized controlled trial in pediatric acute respiratory distress syndrome.

Main Results:

• PLV has demonstrated improved gas exchange and lung function in animal models.
• PLV has shown potential in reducing secondary lung injury.
• Preliminary results suggest efficacy in pediatric acute respiratory distress syndrome, with ongoing trials.

Conclusions:

• Partial liquid ventilation shows promise as a novel therapy for various infant and pediatric respiratory conditions.
• Perfluorocarbons offer additional applications, including drug delivery, lung lavage, and as X-ray contrast media.
• Further research is essential to address unanswered questions regarding PFC dosage, administration, and long-term effects of PLV.