This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Modes of Ventilation, Subject name: Anaesthesia
[{'content': 'All constitutes Berlin definition of acute respiratory distress syndrome :-except \nSelect and explain. \nA. A known clinical insult within 1 week, B. Bilateral opacities in chest - x ray, C. Respiratory failure not fully explained by cardiac failure or fluid overload, D. Pulmonary aery end diastolic pressure less than 18 mm ng', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Berlin definition of acute respiratory distress syndrome comprises-- Timing - within 1 week of known clinical insult Chest imaging - Bilateral opacities - not fully explained by effusions collapse Origin of edema - Respiratory failure not fully explained by cardiac failure or fluid overload. Oxygenation Mild - 200<PaO2 / FiO2 < 300 with PEEP or CPAP > 5cm H2O Moderate - 100 < PaO2 / FiO2 < 200 with PEEEP > 5 cm H2O Severe - PaO2 / FiO2 <100 with PEEP > 5 cm H2O', 'role': 'assistant'}]