Usefulness of Home Overnight Pulse Oximetry in Patients with Suspected Sleep-Disordered Breathing

Figure 1

Correlations of apnea-hypopnea index with oxygen desaturation index and percentage of recording with SpO₂ < 90% measured by nocturnal oximetry. The correlation in ODI3 (good correlation, r > 0.8) and ODI4 (excellent correlation, r > 0.9) is shown. AHI: apnea-hypopnea index; ODIs: mean number of oxygen desaturations ≥3% and 4% (ODI3 and ODI4) per hour of recording; T90: time spent with SpO₂ < 90%.

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