On the basis of the Berlin definition of Acute Respiratory Distress Syndrome (ARDS) , the definition of moderate acute respiratory distress syndrome comprises which of the following components?
I. PaO₂/FiO₂ $\le$ 300 mm Hg
II. Onset of respiratory symptoms within 1 week of clinical insult
III. Pulmonary capillary wedge pressure greater than 18 mm Hg
IV. Chest imaging findings of new infiltrate consistent with acute pulmonary parenchymal disease

Question

On the basis of the Berlin definition of Acute Respiratory Distress Syndrome (ARDS) , the definition of moderate acute respiratory distress syndrome comprises which of the following components?
I. PaO₂/FiO₂

\le

300 mm Hg
II. Onset of respiratory symptoms within 1 week of clinical insult
III. Pulmonary capillary wedge pressure greater than 18 mm Hg
IV. Chest imaging findings of new infiltrate consistent with acute pulmonary parenchymal disease

Quizplus · Accepted Answer

Within 1 week of known clinical insult or new/worsening respiratory symptoms; bilateral opacities that are not fully explained by effusions, lobar/lung collapse, or nodules. Can be either on CXR or CT scan; with PEEP $\ge$5, mild ARDS: PaO₂/FiO₂ 201 to 300, moderate ARDS: PaO₂/FiO₂ $\le$ 200, severe ARDS: PaO₂/FiO₂ $\le$ 100; risk factors for ARDS must be present. Respiratory failure that is not fully explained by cardiac failure or fluid overload. If no risk factors are present, objective assessment (e.g., echocardiography) is required to exclude hydrostatic edema.

On the Basis of the Berlin Definition of Acute Respiratory ≤\le≤

On the Basis of the Berlin Definition of Acute Respiratory $\le$