Research Article
Respiratory Event-Induced Blood Pressure Oscillations Vary by Sleep Stage in Sleep Apnea Patients
Table 1
Apnea-elicited variations in SBP during various sleep stages.
| | Sleep stage (no. of OSA events analyzed) | Mean ± STD baseline SBP (mmHg) | Mean ± STD peak SBP during apnea (mmHg) | Difference of mean peak and baseline BP (mmHg) | % difference of mean peak and baseline SBP | Postapnea delay (s) |
| | 1 | N1 (7) | 121.4 ± 4.1 | 130.4 ± 8.5 | 9.1 | 7.5% | 10.0 | | 1 | N2 (12) | 116.7 ± 5.4 | 128.8 ± 12.4 | 12.1 | 10.4% | 7.1 | | 4 | N1 (25) | 156.9 ± 8.9 | 170.5 ± 12.6 | 13.6 | 8.7% | 11.7 | | 5 | N1 (27) | 122.1 ± 5.9 | 137.3 ± 13.8 | 15.2 | 12.4% | 6.3 | | 6 | REM (10) | 160.2 ± 3.4 | 166.1 ± 15.5 | 5.9 | 3.7% | 25.1 | | 7 | N1 (5) | 109.5 ± 4.8 | 122.1 ± 6.2 | 12.6 | 11.5% | 7.4 | | 7 | REM (6) | 109.9 ± 3.6 | 118.9 ± 8.4 | 9 | 8.2% | 7.1 | | 8 | N1 (12) | 135.7 ± 6.6 | 152.2 ± 9.7 | 16.5 | 12.2% | 8.5 | | 10 | N1 (7) | 124.3 ± 6.7 | 142.8 ± 17.3 | 18.4 | 14.8% | 5.4 | | 10 | N2 (13) | 128.6 ± 8.1 | 152.6 ± 15.0 | 24 | 18.7% | 3.4 |
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