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| A/H flow comparison || Prior 1 min RMS moving average. || Prior 1 min RMS moving average. || Average of 80th–90th percentile WPFs of prior 4 min moving average. || Prior 5 min scaled flow amplitude. || 3 min including time before and after event RMS moving average
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| Apnea detection || 2 s RMS (Root Mean Square) moving average <25% for 10 s. || 2 s RMS moving average <25% for 10 s. || WPF (Weighted peak flow) per breath <20% for 10 s, terminating with breath >30%. || Recent 1 min with flow amplitude <10% for 10 s (or set 0%–20% for 6–150 s). || 4 s RMS moving average <10% for 10 s.
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| Non-OA detection || S8: None S9–S10: 1 cm 4 Hz FOT throughout apnea with mixed apnea detection. || 1 cm 4 Hz FOT with mixed apnea detection. || Pressure pulse few seconds into apnea but if larger than expected breath at end of apnea, event is defined as obstructive. || <5% for 10 s || Modulating 0.07 cm 3.5–4.5 Hz micro-oscillation throughout apnea.
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