Continuous positive airway pressure delivered with a “helmet”: Effects on carbon dioxide rebreathing*

Abstract

a) The helmet predisposes to CO2 rebreathing and should not be used to deliver CPAP with a ventilator; b) continuous high flow minimizes CO2 rebreathing during CPAP with the helmet; and c) minute ventilation and Pco2 should be monitored during CPAP with the helmet.