To create an opening through the neck into the trachea. A tube is most often placed through this opening to provide an airway and to remove secretions from the lungs.
Moisture loss - 13.2mg H2O/l
Calculated moisture return - 26 mg H20/l
Resistance at 30L/min - 0.2 cm H20
Resistance at 60L/min - 0.7 cm H20
Connectors - 15F
Minimum tidal volume - >60ml