Changes in systemic variables (SD) in smokers and non-smokers after breathing 100% oxygen
| Blood pressure | Mean blood pressure (mm Hg) | Heart rate (per minute) | |||||
|---|---|---|---|---|---|---|---|
| Systolic (mm Hg) | Diastolic (mm Hg) | ||||||
| Non-smokers: | |||||||
| Before O2 | 116 (16) | 74 (8) | 95 (11) | 74 (10) | |||
| After O2 | 105 (14) | 73 (8) | 89 (11) | 72 (11) | |||
| difference | −9% (6) | — | −6% (5) | — | |||
| p Value | <0.001 | NS | <0.02 | NS | |||
| Smokers: | |||||||
| Before O2 | 134 (16) | 82 (10) | 108 (12) | 77 (15) | |||
| After O2 | 127 (16) | 83 (11) | 105 (11) | 75 (13) | |||
| Difference | −6% (6) | — | — | — | |||
| p Value | <0.002 | NS | NS | NS | |||
NS = non-significant.