Posted by Luke on 7/22/2008, 1:40 am, in reply to "negative numbers"
65.61.112.113
No one here can give you much of an answer with such sketchy information. You and your father are entitled to the information on that sheet. Just ask them for a copy, then post them and you will get good information.
In the meantime here are four sites which will help you understand the PFT. Good Luck.
http://home.columbus.rr.com/allen/pft_interpretation.htm
http://jan.ucc.nau.edu/~daa/lecture/pft.htm
http://www.hopkinsmedicine.org/pftlab/predicted.html
http://noairtogo.tripod.com/pft.htm
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