Liquivent® is a clear perfluorocarbon (PFC) solution for lung lavage - intended to aid in the removal of foreign material and tenacious bronchial secretions.
The water-clear, very dense, low-viscosity PFC liquid is immiscible with both water and lipids. Due to its high density it easily penetrates to the lowest levels in the lung to displace most solids* and liquids, causing those to float to the top of the meniscus where they are easily suctioned out.
*Solids such as food, smoke, charcoal, mucus & dust.
Perfluorcarbon's (PFC) have been extensively studied in both the lungs and circulation. PFC's are bio-inert, minimally absorbed and have no deleterious histological cellular or biochemical effects1. PFC molecules are too large to be metabolised2 and are therefore non-reactive in the respiratory or circulatory system. In addition, PFC's have very high vapour pressures3 and evaporate quickly.
Clinical studies have shown that PFC's are eliminated from the lungs primarily by evaporation, with radiographic clearance of most of the PFC's by 48 hours1. In addition, PFC use in the lungs enhances surfactant phospholipid production4. Instillation of Perflubron into the lungs was found to actually diminish oxidation damage to injury prone tissues5, and when used with exogenous surfactant, PFC actually improved pulmonary gas exchange after meconium aspiration6.
Liquivent® is available in both a radiopaque or radiolucent solution, and supplied in a variety of set volumes from a 20ml syringe to a 1L screw top bottle to accommodate an extensive patient range.