Table 3.
Polysomnographic features among acute stroke patients.
| Stroke Location | OSA Prevalence | AHI | OAI | CAI | Arousal Indexa | Percent time SaO2< 90% |
|---|---|---|---|---|---|---|
| Overall | 58 (79.5) | 12.2±13.9 | 4.6±10.4 | 1.1±4.2 | 20.9±11.7 | 3.9±8.6 |
|
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| Lobar | 32 (84.2) | 14.5±16.8 | 6.3±13.6 | 1.4±4.3 | 21.8±12.2 | 5.6±8.9 |
| Frontal | 15 (79.0) | 15.0±17.3 | 5.3±8.9 | 2.0±5.6 | 21.6±11.6 | 9.2±11.4 |
| Parietal | 15 (93.8) | 18.6±21.2 | 9.3±19.3 | 0.1±0.2 | 20.9±13.0 | 6.8±9.9 |
| Temporal | 6 (66.7) | 9.3±11.0 | 6.3±8.6 | 1.8±4.9 | 26.3±8.7 | 3.0±5.1 |
| Insular | 8 (88.9) | 11.9±12.3 | 2.2±4.2 | 1.1±3.1 | 14.8±5.0 | 8.9±13.6 |
| Occipital | 9 (90.0) | 13.3±11.4 | 6.9±8.4 | 0.7±1.7 | 23.3±11.7 | 5.1±10.2 |
| 1 lobe involved | 18 (85.7) | 13.9±17.2 | 7.3±16.9 | 1.7±4.8 | 23.7±14.1 | 3.1±5.9 |
| 2 lobes involved | 9 (81.8) | 17.6±18.9 | 4.0±6.4 | 1.4±4.1 | 17.4±8.2 | 9.2±10.2 |
| >2 lobes involved | 5 (83.3) | 10.5±10.7 | 7.6±10.2 | 0.1±0.2 | 23.1±9.3 | 8.0±14.5 |
| Subcortical | 25 (78.1) | 9.1±9.3 | 2.3±4.0 | 1.4±5.0 | 23.3±11.5 | 4.6±10.0 |
| Thalamus | 7 (87.5) | 7.7±8.8 | 3.3±4.2 | 1.8±4.9 | 24.1±9.3 | 2.6±5.4 |
| Basal ganglia | 8 (66.7) | 8.7±8.8 | 1.3±1.5 | 2.3±7.4 | 19.2±10.0 | 5.0±13.5 |
| Internal capsule | 10 (100)) | 12.8±9.0 | 3.4±3.4 | 1.6±4.4 | 28.6±12.3 | 7.1±14.3 |
| Corona radiata | 13 (81.3) | 12.2±10.2 | 2.5±4.6 | 1.7±6.1 | 23.5±13.7 | 3.7±7.8 |
| Corpus callosum | 1(50.0) | 3.5±4.9 | 0.0±0.0 | 0.0±0.0 | 18.7±16.4 | 5.9±8.3 |
| Brainstem | 5 (62.5) | 11.0±9.6 | 4.6±6.9 | 0.0±0.0 | 13.2±8.8 | 0.4±0.5 |
| Midbrain | 1 (100) | 27.8 | 21.0 | 0.0 | 31.3 | 0.5 |
| Pons | 4 (57.1) | 10.0±10.0 | 4.8±7.4 | 0.0±0.0 | 13.2±9.5 | 0.4±0.6 |
| Medulla | 1 (100) | 17.7 | 3.0 | 0.0 | 12.9 | 0.6 |
| Cerebellum/cerebellar peduncles | 4 (66.7) | 11.2±13.0 | 3.2±5.0 | 0.0±0.0 | 17.7±7.5 | 1.3±2.1 |
| ACA territory | 3 (100) | 8.3±3.7 | 3.0±2.1 | 0.0±0.0 | 15.5±0.8 | 0.7±0.5 |
| MCA territory | 11 (84.6) | 7.5±6.1 | 1.1±1.8 | 0.1±0.1 | 16.6±9.9 | 4.7±8.8 |
| PCA territory | 3 (100) | 16.6±14.4 | 1.1±0.6 | 0.2±0.2 | 16.1±4.2 | 0.6±0.6 |
Shown are mean±SD or n (%). ACA: anterior cerebral artery; AHI: apnea hypopnea index; CAI: central apnea index; MCA: middle cerebral artery; OAI: obstructive apnea index; OSA: obstructive sleep apnea; PCA: posterior cerebral artery; SaO2: oxygen saturation.
a
Arousal index is the average number of arousals per hour (measure of sleep fragmentation)