The SMART BAG® MO has been designed to allow the provision of consistent ventilations while almost completely eliminating the risks associated with conventional BVM ventilation. The unique actuating mechanism hidden inside the neck bushing of the SMART BAG® MO actually responds to the rescuer and the patient. By responding to the rescuer’s squeeze and release of the BVM, the SMART BAG® MO limits the excessive flow of gas into the patient’s airway, significantly reducing the risk of gastric insufflation by effectively lowering the airway pressure generated. In a normally compliant and resistant airway, the airway pressure is limited to below the esophageal sphincter opening pressure of 19 cm H2O. The response by the SMART BAG® MO is proportional to the rescuers squeeze. The harder the squeeze, the greater the greater the restriction to flow. This alerts the rescuer to ease up on the squeeze, reducing the effort required, resulting in the airway pressure being kept to the minimum to achieve adequate ventilation. At no time is the flow of gas into the patient compromised by the SMART BAG® MO, allowing the rescuer to ventilate even the stiffest lung or most restrictive airway. To assist the rescuer a visual warning of incorrect ventilation technique of the SMART BAG® MO is provided. If the SMART BAG® MO is squeezed too hard, the SMART BAG® MO responds by closing the valve to lower the Flowrate. Should this occur, the “red pressure actuating indicator” moves to the forward position in the neck of the patient valve producing a visual warning of improper technique.