Table 3.
Individual COPD patients with VEP abnormality
| VEP abnormalities | No. of COPD patients (n = 40) | Percentage of COPD patients |
|---|---|---|
| Latency P100 | 21 | 52.5 |
| (Right eye) | ||
| Latency P100 | 17 | 42.5 |
| (Left eye) | ||
| Amplitude P100 | 1 | 2.5 |
| (Right eye) | ||
| Amplitude P100 | 2 | 5 |
| (Left eye) | ||
| Total abnormalities# | 23 | 57.5 |
COPD = Chronic obstructive pulmonary disease; SD = Standard deviation; VEP = Visual evoked potentials; Abnormality defined as a variation of more than ±3 SD from mean of the healthy volunteer mean;
#
Some of the patients had more than one abnormality