A positive pressure device used with an air source which provides transmission of continuous positive pressure into the lungs using an inspiratory line and a one-way valve associated with the inspiratory line. This one-way valve will not allow exhaled air to return through the inspiratory line. The pressure in the device may be measured with a monitor line which is connected to the air source and the disclosed positive pressure device. An adjustable positive end expiratory pressure valve connected to the expiratory line restricts flow of the exhaled air while permitting release of the exhaled air from an expiratory line to atmospheric pressure. The adjustable positive end expiratory pressure valve is configured to cooperate with the one-way valve to permit adjustment of an inflation pressure of the lungs of the patient.
