[Validation of the advanced event detection in patients with sleep apnea hypopnea syndrome using auto-CPAP treatment].

OBJECTIVE

To validate the use of the event detection capabilities in an auto-CPAP system used by patients with sleep apnea hypopnea syndrome (SAHS).

METHODS

A total of 28 subjects with SAHS were recruited in the study. All the underwent tests of polysomnography (PSG) before and during treatment by an-auto-CPAP system with advanced event detection (AED) in the sleep lab. Apnea-hypopnea index (AHI), apnea index (AI) and hypopnea index (HI) by PSG and PAP machine were compared.

RESULTS

The mean AHI derived from PSG and AED was (6.1 ± 5.6) and (7.1 ± 5.3) times/h (P>0.05), AI was (5.4 ± 5.4) and (4.6 ± 4.2) times/h (P>0.05), HI was (0.77 ± 1.07) and (2.54 ± 1.98) times/h (P<0.05). The Spearman correlation coefficient of AHI was 0.698 (P<0.05), AI was 0.767 (P<0.05), HI was 0.141 (P>0.05). Bland-Altman plot also showed a high agreement between AHI derived from PSG and AHI derived from AED.

CONCLUSION

AED showed a high agreement with PSG in the detection of AHI and AI, but not in HI. This technique may be helpful to monitor the efficacy of PAP treatment at home for long-term follow-up.