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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.
user
Platypnea means-
assistant
The correct answer is  Platypnea is defined as dyspnea in the upright position with relief in the supine position.It is seen in left atrial myxoma or hepatopulmonary syndrome. Ref:Harrison's medicine-18th edition,page no:279