Researchers from King’s College London and Imperial College London have developed a theoretical model for how one ventilator could be used to treat two patients. They say that, although splitting ventilators can be inherently dangerous, their model shows how some of the issues can be mitigated by using variable resistances and one-way valves.
The researchers developed a theoretical model based on an electrical circuit analogy and used it to test various configurations for connecting a single ventilator to two patients. They found that providing tailored ventilation to different patients from one ventilator is theoretically possible when variable resistances and one-way valves are added into the inhalation and exhalation paths of the ventilator circuit.
The team point out that there are a range of significant issues associated with ventilator splitting, and that the practice is only ever to be considered in the most extreme circumstances because it poses serious risks. They say their method could be considered a 'last resort' solution.
Dr Vincent added: "Our team is now keen to get feedback from the international community and begin bench testing the approach.”
