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Some research studies have found that a high RDI was significantly correlated with [[excessive daytime sleepiness]], and that this correlation was stronger than that for the frequency of [[oxygen saturation]] decreases below 85%, but other studies have found only a weak correlation.
RERA Rule for Adults [Recommended] (Consensus)
If electing to score respiratory effort-related arousals, score a respiratory event as a RERA if there is a sequence of breaths lasting at least 10 seconds characterized by increasing respiratory effort or by flattening of the inspiratory portion of the nasal pressure (diagnostic study) or PAP device flow (titration study) waveform leading to arousal from sleep when the sequence of breaths does not meet criteria for an apnea or hypopnea.
==Formula==
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