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The plane may be flying at 35,000 feet, but the cabin is pressurized to roughly 6,000 to 8,000 feet. The lower oxygen pressure can make heart and lung problems worse, especially in vulnerable passengers. So what happens if someone may be having a heart attack? I cannot check a troponin, obtain a diagnostic 12-lead ECG or send them to the cath lab. I have to rely on the symptoms, medical history, vital signs and physical examination. I ask about chest pressure, radiation to the arm or jaw, shortn
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