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WAC 296-20-380

No agency filings affecting this section since 2003

Categories of permanent respiratory impairments.

(1) The FVC and FEV1 are greater than or equal to eighty percent of predicted normal for the person's age, gender, and height. The FEV1/FVC ratio is greater than or equal to .70. Subjective complaints may be present or absent. If exercise testing is done, the maximum oxygen consumption is greater than 25cc/kilo/min.
(2) The FVC or FEV1 is from seventy to seventy-nine percent of predicted, and if obstruction is present, the FEV1/FVC ratio is .60 - .69. If exercise testing is done, the maximum oxygen consumption is 22.5-25cc/kilo/min.
(3) The FVC or FEV1 is from sixty to sixty-nine percent of predicted, and if obstruction is present, the FEV1/FVC ratio is .60 - .69. If exercise testing is done, the maximum oxygen consumption is 20-22.4cc/kilo/min.
(4) The FVC or FEV1 is from fifty-one to fifty-nine percent of predicted. The FEV1/FVC ratio is .51 - .59. If exercise testing is done, the maximum oxygen consumption is 17.5-19.9cc/kilo/min.
(5) FVC from fifty-one to fifty-nine percent of predicted, or the FEV1 from forty-one to fifty percent of predicted, and if obstruction is present, the FEV1/FVC ratio is .41 - .50. If exercise testing is done, the maximum oxygen consumption is 15-17.4cc/kilo/min.
(6) The FVC is equal to or less than fifty percent of predicted or the FEV1 is equal to or less than forty percent of predicted. The FEV1/FVC ratio is equal to or less than .40. If exercise testing is done, the maximum oxygen consumption is less than 15cc/kilo/min.
[Statutory Authority: RCW 51.04.020(4), 51.04.030 and 51.32.080(2). WSR 94-03-073, § 296-20-380, filed 1/17/94, effective 3/1/94. Statutory Authority: RCW 51.04.020(4) and 51.04.030. WSR 82-24-050 (Order 82-39), § 296-20-380, filed 11/29/82, effective 1/1/83; Order 74-32, § 296-20-380, filed 6/21/74, effective 10/1/74.]