A medical system for assisting a rescuer with an intubation procedure with an endotracheal, ET, tube for a patient, the system comprising: one or more airflow sensors (127, 210, 218, 221) configured to obtain data indicative of airflow in the patient's airway; one or more physiological sensors (212, 218) configured to obtain physiological information regarding airflow in the patient's lungs; a patient monitoring device communicatively coupled to the one or more airflow sensors and the one or more physiological sensors, the patient monitoring device comprising: a user interface comprising a display; and at least one processor and memory configured to: receive the data indicative of the airflow in the patient's airway; determine the presence of airflow in the patient's airway based on the received data; receive the physiological information regarding the airflow in the patient's lungs, including continually receiving updated physiological values as the patient is continuously monitored after initial placement of the ET tube; determine a physiological baseline regarding airflow in the patient's lungs after said initial placement of the ET tube, wherein the physiological baseline is a dynamic physiological baseline, the determining the dynamic physiological baseline including continually updating the dynamic physiological baseline after said initial ET tube placement based on the continually received updated physiological values as the updated physiological values are continually received; determine whether the ET tube remains properly placed based on a deviation from the dynamic physiological baseline; and present to the display of the user interface an output of the determination of whether the ET tube remains properly placed. one or more airflow sensors (127, 210, 218, 221) configured to obtain data indicative of airflow in the patient's airway; one or more physiological sensors (212, 218) configured to obtain physiological information regarding airflow in the patient's lungs; a patient monitoring device communicatively coupled to the one or more airflow sensors and the one or more physiological sensors, the patient monitoring device comprising: a user interface comprising a display; and at least one processor and memory configured to: receive the data indicative of the airflow in the patient's airway; determine the presence of airflow in the patient's airway based on the received data; receive the physiological information regarding the airflow in the patient's lungs, including continually receiving updated physiological values as the patient is continuously monitored after initial placement of the ET tube; determine a physiological baseline regarding airflow in the patient's lungs after said initial placement of the ET tube, wherein the physiological baseline is a dynamic physiological baseline, the determining the dynamic physiological baseline including continually updating the dynamic physiological baseline after said initial ET tube placement based on the continually received updated physiological values as the updated physiological values are continually received; determine whether the ET tube remains properly placed based on a deviation from the dynamic physiological baseline; and present to the display of the user interface an output of the determination of whether the ET tube remains properly placed. a user interface comprising a display; and at least one processor and memory configured to: receive the data indicative of the airflow in the patient's airway; determine the presence of airflow in the patient's airway based on the received data; receive the physiological information regarding the airflow in the patient's lungs, including continually receiving updated physiological values as the patient is continuously monitored after initial placement of the ET tube; determine a physiological baseline regarding airflow in the patient's lungs after said initial placement of the ET tube, wherein the physiological baseline is a dynamic physiological baseline, the determining the dynamic physiological baseline including continually updating the dynamic physiological baseline after said initial ET tube placement based on the continually received updated physiological values as the updated physiological values are continually received; determine whether the ET tube remains properly placed based on a deviation from the dynamic physiological baseline; and present to the display of the user interface an output of the determination of whether the ET tube remains properly placed. receive the data indicative of the airflow in the patient's airway; determine the presence of airflow in the patient's airway based on the received data; receive the physiological information regarding the airflow in the patient's lungs, including continually receiving updated physiological values as the patient is continuously monitored after initial placement of the ET tube; determine a physiological baseline regarding airflow in the patient's lungs after said initial placement of the ET tube, wherein the physiological baseline is a dynamic physiological baseline, the determining the dynamic physiological baseline including continually updating the dynamic physiological baseline after said initial ET tube placement based on the continually received updated physiological values as the updated physiological values are continually received; determine whether the ET tube remains properly placed based on a deviation from the dynamic physiological baseline; and present to the display of the user interface an output of the determination of whether the ET tube remains properly placed.