Acute respiratory distress syndrome: the berlin definition.

 Under the Berlin definition, patients with PaO2/FiO2 200-300 would now have "mild ARDS." Onset of ARDS (diagnosis) must be acute, as defined as within 7 days of some defined event, which may be sepsis, pneumonia, or simply a patient's recognition of worsening respiratory symptoms.

By placing 2 fingers at the sternum (the spot where the lower ribs meet) the put the heel of your other hand next to your fingers. hope this