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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Chest X-ray shows B/L lung infiltrates next investigation is
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The correct answer is  In ARDS, a chest radiograph will show bilateral lung infiltrates. Chest CT scanning in ARDS reveals extensive heterogeneity of lung involvement. Chest X-ray in ARDS usually reveals opacities consistent with the pulmonary edema and often involves three-quaers of lung fields. But chest X-ray in ARDS does demonstrate pleural effusion, cardiomegaly, and pulmonary vascular distribution as seen in pure cardiogenic pulmonary edema. Reference: Harrison's Medicine, 20TH edition, page no:2032