Efecto de un dispositivo binivel autoajustable sobre los eventos respiratorios en pacientes con Síndrome de Apnea Obstructiva del Sueño

Abstract

Objective: To evaluate the effect of an auto-bilevel device on respiratory events in adults with severe obstructive sleep apnea syndrome (OSAS). Polysomnographies (PSG) with the use of auto-bilevel device were reviewed. Sleep architecture, respiratory events, O2 saturation (SpO2) and exhaled carbon dioxide (EtCO2) were compared among baseline and therapeutic PSG. Results: We included 10 PSG. Auto-bilevel device corrected the sleep architecture; the apnea hypopnea index (AHI) decreased from 76 (39-137) to 14 (6-13) at the expense of obstructive and mixed apneas (p < 0.05), there was no significant decrease in hypopneas. Central apneas increased from 0.5 (0-12.4) to 8.2 (0-20) h?1. SpO2 and EtCO2 improved. Conclusions: In severe OSAS auto-bilevel device corrects sleep architecture, improves SpO2 and EtCO2 and decreases AHI at the expense of obstructive and mixed apneas, but could not eliminate hypopneas and even could increase central apneas.