Table 1.

Results of the exams before and after the initiation of nocturnal non-invasive ventilation.

Patient	Exam	Baseline	After the initiation of NIV
1	Cardio-Respiratory Monitoring	AHI 6.1/h, mean SpO2 89%, CT90 33.8%	AHI < 1/h, mean SpO2 92.8%, CT90 8.5%
	Arterial Blood Gas Analysis	pH 7.41, pO2 75 mmHg, pCO2 43 mmHg, HCO3− 27.3 mmol/L	pH 7.45, pO2 84 mmHg, pCO2 40 mmHg, HCO3− 27.6 mmol/L
2	Cardio-Respiratory Monitoring	AHI 6.9/h, mean SpO2 88%, CT90 66.7%	AHI < 1/h, mean SpO2 96%, CT90 0%
	Arterial Blood Gas Analysis	pH 7.43, pO2 69 mmHg, pCO2 40 mmHg, HCO3− 26.4 mmol/L	pH 7.44, pO2 74 mmHg, pCO2 39 mmHg, HCO3− 26.5 mmol/L

NIV = non-invasive ventilation; AHI = apnea-hypopnea index; SpO2 = mean nocturnal oxygen saturation; CT90 = cumulative percentage of time with SpO2 less than 90%.