Research Article

Outcomes of Noninvasive Positive Pressure Ventilation in Acute Respiratory Distress Syndrome and Their Predictors: A National Cohort

Figure 1

Study design flow chart. NIS: national in-patient sample; n: actual number of observations,; ARDS: acute respiratory distress syndrome; DNR: do not resuscitate; ACPE: acute cardiogenic pulmonary edema; MV: mechanical ventilation; IMV: invasive mechanical ventilation; NIPPV: noninvasive positive pressure ventilation.