From: Decreased blood pressure associated with in-vehicle exposure to carbon monoxide in Korean volunteers
 | COHb levels in the first test (n = 23) | COHb levels in second test (n = 20) | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
33.2Â ppm in comparison with 0Â ppm | 72.4Â ppm in comparison with 0Â ppm | 30.2Â ppm in comparison with 0Â ppm | 48.8Â ppm in comparison with 0Â ppm | |||||||||
0Â ppm | 33.2Â ppm | Delta | 0Â ppm | 72.4Â ppm | Delta | 0Â ppm | 30.2Â ppm | Delta | 0Â ppm | 48.8Â ppm | Delta | |
COHb (%) | 1.2 0.9-1.5 | 1.6 1.4-2.1 | 0.4* 0.1-0.9 | 1.2 0.9-1.5 | 2.4 2.2-2.7 | 1.2* 1.1-1.5 | 1.2 1.0-1.4 | 1.6 1.4-1.7 | 0.4* 0.2-0.6 | 1.2 1.0-1.4 | 2.3 2.0-2.4 | 1.0* 0.9-1.2 |