Reader Mail

AVmail: September 15, 2014 »

George Pappas writes: "I am 85 years old and have a lung condition. I had a pulse oximeter for years, and it normally indicated a saturation level of around 92 to 94 percent. It was one of the American-made units and cost about $150. Eventually it quit, and when I went to replace it, I found an import at a department store for $35. It indicated a saturation level of 98 percent or better all the time. The point here is that all POs are not equal. If you are going to be using it to monitor your oxygen level in flight, you should buy a quality unit and verify its accuracy by checking it against a hospital machine. Your life just might depend on it." Click through to read more mail from AVweb readers. More

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