Table 5 Changes in blood pressure parameters in therapeutic and subtherapeutic CPAP groups.
| Therapeutic CPAP (n = 23) | Therapeutic CPAP (n = 23) | Subtherapeutic CPAP (n = 23) | Subtherapeutic CPAP (n = 23) | Difference (95% CI) in BP changes (mm Hg) | p value ANOVA | |
|---|---|---|---|---|---|---|
| Baseline | 3 months | Baseline | 3 months | |||
| Sleep time BP | ||||||
| Systolic | 118.3 (3.3) | 114.2 (2.8) | 113.7 (3.3) | 115.9 (2.9) | −6.3 (−11.8 to −0.7) | 0.028* |
| Diastolic | 76.9 (2.5) | 73.9 (2.1) | 73.6 (2.2) | 74.5 (1.8) | −3.8 (−8.0 to 0.4) | 0.078 |
| MAP | 91.3 (2.5) | 87.8 (2.1) | 87.5 (2.5) | 88.7 (2.0) | −4.9 (−9.2 to −0.4) | 0.033* |
| Wake time BP | ||||||
| Systolic | 129.1 (3.0) | 126.8 (3.0) | 127.7 (3.0) | 128.0 (3.4) | −2.5 (−8.2 to 3.2) | 0.376 |
| Diastolic | 84.3 (2.1) | 82.3 (2.0) | 83.6 (2.1) | 83.4 (1.9) | −1.8 (−5.3 to 1.8) | 0.317 |
| MAP | 98.9 (2.1) | 96.9 (2.1) | 98.1 (2.1) | 98.3 (2.4) | −2.2 (−6.2 to 1.9) | 0.293 |
| Mean 24 hour BP | ||||||
| Systolic | 125.9 (3.0) | 123.5 (2.8) | 122.0 (3.0) | 120.2 (5.6) | −0.4 (−10.7 to 9.8) | 0.928 |
| Diastolic | 82.5 (2.2) | 80.1 (2.0) | 79.6 (2.2) | 80.7 (1.8) | −3.5 (−6.6 to −0.5) | 0.025* |
| MAP | 96.8 (2.1) | 94.4 (2.0) | 93.9 (2.1) | 95.2 (2.1) | −3.8 (−7.2 to −0.2) | 0.037* |
Values are expressed as mean (SE).
MAP, mean arterial blood pressure.
* Statistically significant.