The primary metric extracted from the polysomnogram in patients with sleep apnea is the apnea-hypopnea index (or respiratory disturbance index) and its derivatives. Other phenomena of possible importance such as periods of stable breathing, features suggestive of high respiratory control loop gain, and sleep fragmentation phenotypes are not commonly generated in clinical practice or research. A broader phenotype designation can provide insights into biological processes, and possibly clinical therapy outcome effects.
CITATION STYLE
Thomas, R. J., Shin, C., Bianchi, M. T., Kushida, C., & Yun, C.-H. (2017). Distinct polysomnographic and ECG-spectrographic phenotypes embedded within obstructive sleep apnea. Sleep Science and Practice, 1(1). https://doi.org/10.1186/s41606-017-0012-9
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