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Emphysema caused by cigarette smoking has a variable prognosis. Studies have shown a 40% 12 year survival rate for patients with FEV1 of 1.25 L, and 5% for those with FEV1 of 0.75 L. A 40% 12 year survival rate is interpreted as 40% of those with emphysema will live up to 12 years. FEV1 stand for forced expiratory volume in 1 second. It is a measure of lung function.

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Q: Diagnosed with emphysema at 52 how long have you got?
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