Tidal volume.expired.spontaneous+mechanical^on ventilator:Vol:Pt:Respiratory system.airway:Qn
tidal volume.expired.spontaneous+mechanical^on ventilator:vol:pt:respiratory system.airway:qn
Tidal volume expired spontaneous+mechanical Respiratory system airway --on ventilator
tidal volume expired spontaneous+mechanical respiratory system airway --on ventilator