APNEA HRV+SPO2 DATASET
The HuGCDN2014-OXI database was provided by the Dr. Negrín University Hospital (Las Palmas de Gran Canaria, Spain) and contains recordings of 83 subjects, each containing the ECG signal, digitized at 200 Hz, and the SpO2 signal, digitized at 50 Hz. The sleep studies and the labelling process were carried out following the American Academia of Sleep Medicine (AASM) guidelines. An expert labeled every minute based on simultaneous polysomnography, marking it as apnea or nonapnea. There are three groups: 1) CONTROL: thirty-eight (38) healthy subjects with AHIs lower than 5 ranged between (0-5). 2) DESATURATING PATIENTS: thirty-four (34) OSA patients with AHIs higher than 25 ranged between (30-106.3) that show desaturations during apneic episodes. 3) NONDESATURATING PATIENTS: eleven (11) OSA patients with AHIs higher than 25 ranged between (26.2-87.5) that do not always show desaturations during apneic episodes. Patients are defined as nondesaturating when their ODI is less than half their AHI, in our case the 75% of the nondesaturating patients present an ODI less than 7.35 and a total of apneas less than 98, then for 75% of the nondesaturating patients the percentage of desaturating apneic events is below of 7.5%.