Chronic Obstructive Pulmonary Disease (COPD) Expert Forum
PFT Interpretation
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PFT Interpretation

I would appreciate if you could review the results of my PFT and give me your analysis or opinion. I am 61 (well in a month anyway) and 70.5 inches tall and 170 pounds. I know almost nothing about most of what is contained here with the exception of PEF and FEV1. I am somewhat concerned by the 145% of predicted for RV and 136% of predicted for FRC. The FEF25-75% and the FEV1/FVC are also concerning. I have no idea whether the DLCO results being over 100% is a good thing or a bad thing so would appreciate your explanation of those numbers as well. Actually I guess I am asking for an interpretation of the entire report.
Thank you


SPIROMETRY pre drug pre drug post drug post drug
units predicted reported % predictedreported % predicted
FVC L,btps 4.54 5.03 111 5.24 116
FEV1 L,btps 3.64 2.37 65 2.46 68
FEV1/FVC % 80 47 59 47 59
FEV3 L,btps 4.17 3.49 84 3.6 86
FEF25-75%L/s 3.67 0.69 19 0.7 19
FEF25% L/s 8.03 2.79 35 2.78 35
FEF50% L/s 4.51 0.81 18 0.85 19
FEF75% L/s 1.69 0.29 17 0.3 18
PEF L/s 8.73 10.33 118 10.43 119
FIVC L,btps 4.87 4.9
FIFnax L/s 9.81 9.49

LUNG VOLUME (PRE ONLY NO POST SHOWN)

TLC L,btps 7.09 8.26 117
VC L,btps 4.54 4.98 110
IC L,btps 3.39 3.23 95
FRC L,btps 3.7 5.03 136
FRC (N2) L,btps 3.7
ERV L,btps 1.43 1.75 122
RV L,btps 2.27 3.28 145
RV/TLC % 33 40 122
TLC (N2) L,btps 7.09
RV (N2) L,btps 2.27

DLCO

Dsb ml/min/mmHg,stpd 22.88 25.64 112
D/VAsb ml/min/mmHg/L,stpd 3.3 3.36 102
VAsb L,btps 6.92 7.62 110
Vlnsp L 5.09
242587_tn?1355427710
The first thing to do is to confirm that the PFT values are valid; performed in a reliable lab by an experienced technician and interpreted by a qualified physician.  

Greater than predicted values indicate lung hyperinflation.  This phenomenon is characteristic of what are called obstructive lung diseases that include Asthma, COPD, Emphysema.  The degree of severity of these diseases varies from Mild to Very Severe.

A reduction in FEV1/FVC ratio ( 100% is inconsistent with the finding of hyperinflation and reduced FEV1.  I suggest that you discuss this apparent discrepancy with the physician who ordered your testing.

Good luck
3 Comments
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Avatar_m_tn
The columns seemed to have gotten messed up so here is the colunn headings if that helps any.

Units
Predicted
Pre Drug Reported
% of Predicted
Post Drug Reported
% of Predicted.

SIROMETRY
FVC L,btps 4.54 5.03 111% 5.24 116%
FEV1 L,btps 3.64 2.37 65% 2.46 68%
FEV1/FVC % 80 47 59% 47 59%
FEV3 L,btps 4.17 3.49 84% 3.6 86%
FEF25-75%L/s 3.67 0.69 19% 0.7 19%
FEF25% L/s 8.03 2.79 35% 2.78 35%
FEF50% L/s 4.51 0.81 18% 0.85 19%
FEF75% L/s 1.69 0.29 17% 0.3 18%
PEF L/s 8.73 10.33 118% 10.43 119%
FIVC L,btps 4.87 4.9
FIFnax L/s 9.81 9.49

LUNG VOLUME (PRE ONLY NO POST SHOWN)

TLC L,btps 7.09 8.26 117%
VC L,btps 4.54 4.98 110%
IC L,btps 3.39 3.23 95%
FRC L,btps 3.7 5.03 136%
FRC (N2) L,btps 3.7
ERV L,btps 1.43 1.75 122%
RV L,btps 2.27 3.28 145%
RV/TLC % 33 40 122%
TLC (N2) L,btps 7.09
RV (N2) L,btps 2.27

DLCO

Dsb ml/min/mmHg,stpd 22.88 25.64 112%
D/VAsb ml/min/mmHg/L,stpd 3.3 3.36 102%
VAsb L,btps 6.92 7.62 110%
Vlnsp L 5.09

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Avatar_m_tn
I am not sure how to report these numbers. I had them all spaced out nicely so they were in proper columns but as soon as I posted it they went back to the same way they did in the original post.

If there is someway to post these and keep the formatting could someone please know.
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