Help Interpreting my Pulmonary Function Test

What do my pft results mean? Do I have mild, moderate or severe COPD? Is it emphysema? I am a 58 yr old male, 6ft 180lbs, exercise regularly, smoked 2o yrs 1-1.5 pks/day, stopped smoking 25 years ago. Used to SCUBA dive. Stopped SCUBA when symptoms started last July. Asthma as a teenager - none since.

Symptoms: Since 7/15/2001. hoarseness, mild dry cough, lung irritation (like a chest cold). Since 10/15/01. same plus occasional dyspnea (at first once a week now every 3 days)
Dyspnea starts when hoarseness, lung irritation worse. Sleep a lot, usually very tired. Feel pretty good in morning. Feels like a cold that starts every 3 or 4 days. no fever.

Diagnosis that came back with pft said: normal FEV1, FVC, and FEV1/FVC. No bronchodilator reversibility. Increased TLC, RV, and RV/TLC. Normal vital capacity, normal DLCO, normal flow volume loop. Pulmonary function study demonstrates a non-secific ventilatory dysfunction. Elevated lung volumes suggest air trappings consistent with COPD.

The actual pre and post dilator %pred numbers for some of the spirometry measurements were: fev1(94,100), fvc(108,110), fev1/fvc(87,90), fef25-75(59,68), fef50(60,73), fef25(91,102), fef75(44,51), mvv(107,84).

Some %pred for lung volumes were: tlc(136), rv(197), rv/tlc(145), svc(105), erv(127), frc(170), ic(95).

Some diffuion %predicted were dlco sb(107), dclo corrected(107),dl/va(90).

I also had xray and CT scan of the chest. The report said normal for everything except "mild changes COPD". "There are a few areas noted of destroyed lung consistent with COPD.

Thanks,
Tom

[National Jewish]

As stated in the report of the CT of the chest, you may have mild COPD.  The abnormalities of the Pulmonary Function Tests (PFT