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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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Barometric pressure at 10,000 feet deep in the sea is
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The correct answer is  The approximate barometric at sea level, the barometric pressure is 760 mm Hg; at 10,000 feet, it is only 523 mm Hg; and at 50,000 feet, it is 87 mm Hg. This decrease in barometric pressure is the basic cause of all the hypoxia problems in high-altitude physiology because, as the barometric pressure decreases, the atmospheric oxygen paial pressure (PO2) decreases propoionately, remaining at all times slightly less than 21 percent of the total barometric pressure; At sea level, PO2 is about 159 mm Hg, but at 50,000 feet, PO2 is only 18 mm Hg.Ref: Guyton; 13th edition; Chapter 44; Ation, High Altitude, and Space Physiology