Fred takes a trip to La Paz, Bolivia. At almost 12,000 feet above sea level, the

Question

Fred takes a trip to La Paz, Bolivia. At almost 12,000 feet above sea level, the oxygen content of the air in La Paz is significantly lower than it is in his hometown of Boston. When he arrives, chemosensors in his blood vessels detect the drop in oxygen saturation of his blood, and send signals to his nervous system to increase his ventilation. Meanwhile, his body continues to produce similar amounts of carbon dioxide. The result is that his oxygen levels move closer to normal, but his PaCO2 decreases. How would you expect the pH of his urine to change, assuming he has normal kidney function and his diet remains the same?

Fred takes a trip to La Paz, Bolivia. At almost 12,000 feet above sea level, the oxygen content of the air in La Paz is significantly lower than it is in his hometown of Boston. When he arrives, chemosensors in his blood vessels detect the drop in oxygen saturation of his blood, and send signals to his nervous system to increase his ventilation Meanwhile, his body continues to produce similar amounts of carbon dioxide. The result is that his oxygen levels move closer to normal, but his PaCO2 decreases. How would you expect the pH of his urine to change, assuming he has normal kidney function and his diet remains the same? Urine pH will be higher several days after his arrival. Urine pH will be lower several days after his arrival Urine pH will be higher within hours of his arrival. Urine pH will be lower within hours of his arrival. O

Explanation / Answer

Urine pH will be higher several days after his arrival.

reference: https://academic.oup.com/ndt/article/29/3/497/1862881/Short-term-responses-of-the-kidney-to-high

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