Table 4.
Vascular measurements
| Vascular Measurement | Overlap Syndrome(n = 12) | COPD Only(n = 47) | OSA Only(n = 9) | Former Smoker Controls(n = 21) | One-WayANOVA P Value |
|---|---|---|---|---|---|
| Brachial PP, mmHg | 52 ± 3 | 51 ± 2 | 55 ± 2 | 48 ± 9 | 0.30 |
| Carotid diameter, mm | 7.58 ± 0.91 | 6.95 ± 0.78 | 6.90 ± 0.77 | 7.0 ± 0.75 | 0.11 |
| Carotid distension, % | 0.36 ± 0.18 | 0.43 ± 0.12 | 0.52 ± 0.22 | 0.46 ± 0.11 | 0.06 |
| Carotid compliance, mm2·mmHg−1 | 0.08 ± 0.01 | 0.10 ± 0.04 | 0.10 ± 0.04 | 0.01 ± 0.04 | 0.27 |
| Carotid β-stiffness index, U | 13.57 ± 1.68 | 8.99 ± 0.47 | 8.37 ± 0.96 | 7.99 ± 0.54 | <0.001* |
Data are means ± SE. COPD, chronic obstructive pulmonary disease; OSA, obstructive sleep apnea; ANOVA, one-way analysis of variance (ANOVA). n = number of subjects. *P < 0.05.