Task: Answer Verification
Input (English): Question: Is extreme hypercapnia a long-term prognostic factor after near-fatal asthma : a 12-year follow-up study?
Answer: Extreme hypercapnia in near-fatal asthma tended to recur, but is not an aggravating long-term prognostic factor. Targeted surveillance of these high-risk patients should make it possible to reduce relapses and death rates from asthma.
Output (English): no