To infer ventilation status, we used a heuristic approach, empirically utilizing information from multiple chart variables that were informative of ventilation status: Airway, Ventilator Mode, Respiratory Support, Breath Rate, and Oxygen Delivery Device. Ventilation status was coded as "intubated" or "not-intubated". An "extubation" event was defined as the time point where "intubated" status changed to "not-intubated". This rule-based method was used as a first- pass method for patient selection. We manually verified the results against nursing notes to ensure the correct status was assigned to each event of each patient.
Aus dem Paper:
To infer ventilation status, we used a heuristic approach, empirically utilizing information from multiple chart variables that were informative of ventilation status: Airway, Ventilator Mode, Respiratory Support, Breath Rate, and Oxygen Delivery Device. Ventilation status was coded as "intubated" or "not-intubated". An "extubation" event was defined as the time point where "intubated" status changed to "not-intubated". This rule-based method was used as a first- pass method for patient selection. We manually verified the results against nursing notes to ensure the correct status was assigned to each event of each patient.