At what altitudes does high-altitude pulmonary edema generally develop? EMT At what altitudes does high-altitude pulmonary edema generally develop? A) b. 8000 to 12,000 feet B) a. 5000 to 6000 feet C) c. 12,000 to 15,000 feet D) d. Above 15,000 feet Answer: A) b. 8000 to 12,000 feet Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+