Table 1.
Patient 1 | Patient 2 | ||
---|---|---|---|
Age at sleep study | 1 month | 4 years | 1 month |
EEG arousal index (per hour), Normal < 14/hour | 13.9 | 22.2 | 21.8 |
Respiratory arousal index (per hour) | 0.5 | 2.6 | 3.4 |
Obstructive apnea hypopnea index (per hour), Normal < 1/hour | 0.2 | 3.2 | 23.8 |
Central apnea hypopnea index (per hour), Normal < 5/hour | 4.4 | 74 | 1.9 |
Average saturations (SaO2) | 87–93% | 91–95% | 90–93% |
Nadir saturation (SaO2) | 81% | 65% | 81% |
% time SaO2 <92% | 7.5% | 61.4% | 13.6% |
Awake CO2 (mmHg), Normal = 35–45 mmHg | 52–56 | 36–48 | N/A |
Average ETCO2/TcCO2, Normal = 35–45 mmHg | 52–56 | 52–60 | 60–70 |
% time CO2 >50 torr during sleep | 80% | 100% | 100% |
Respiratory rate (per minute) | 30–48 | 8–30 | 24–28 |
Heart rate (per minute) | 130–158 | 107–136 | 135–155 |
Electrocardiogram abnormalities | None | None | None |
Note. Electroencephalogram (EEG) arousal index: Number of arousal divided by total sleep duration; Respiratory arousal index (RAI): Total number of arousal due to respiratory events divided by total sleep duration; Apnea hypopnea index (AHI): Total number of apnea and hypopneas divided by total sleep duration. Based on obstructive or central events respective AHI is calculated (Berry et al., 2017)