TY - JOUR
T1 - Correlation between oxygen saturation and pulse tracing patterns on overnight oximetry with normal desaturation index is an independent predictor of obstructive sleep apnea
AU - Festic, Nura
AU - Zuberi, Muhammad
AU - Bansal, Vikas
AU - Fredrickson, Paul
AU - Festic, Emir
N1 - Publisher Copyright:
© 2019 American Academy of Sleep Medicine. All rights reserved.
PY - 2019
Y1 - 2019
N2 - Study Objectives: Overnight pulse oximetry (OPO) is commonly used as a screening test for obstructive sleep apnea. Heart rate variability (HRV) correlates well with apnea-hypopnea index during polysomnography (PSG). We hypothesized that visual correlation of episodic increase in HRV with minimal oxygen desaturations on normal OPO (oxygen desaturation index less than 5 events/h) is predictive of OSA. Methods: A retrospective analysis of patients undergoing OPO and PSG in 1 year was performed. We included only OPO performed on room air and interpreted as normal. Visual correlation between simultaneous increase in HRV and minimal oxygen desaturation was independently assessed by three raters, resulting in the consensus agreement. The primary outcome was presence of OSA on the subsequent PSG. Results: Of 936 patients with OPO and PSG, 109 patients had normal overnight oximetry study on room air. Of these, 65 (60%) were females, median (interquartile range) age was 54 years (44, 67), body mass index was 29 kg/m 2 (25, 32), and the median oxygen desaturation index was 1.8 events/h (1, 2.7). Consensus agreement identifed 54 patients with visual correlation between pulse and minimal oxygen desaturations. Thirty-two patients (29%) were found to have OSA on PSG, of which 24 (75%) could have been accurately predicted by the consensus agreement (odds ratio 4.70, 95% confdence interval 1.87 11.8, P .001). When adjusted for pertinent clinical and demographic variables, consensus agreement was independently associated with diagnosis of OSA on subsequent PSG (odds ratio 5.6, 95% confdence interval 1.76 20.9, P = .003). Conclusions: Visual correlation between episodic increase in HRV and minimal oxygen desaturations on OPO is an independent predictor of OSA, and promising marker for clinical use.
AB - Study Objectives: Overnight pulse oximetry (OPO) is commonly used as a screening test for obstructive sleep apnea. Heart rate variability (HRV) correlates well with apnea-hypopnea index during polysomnography (PSG). We hypothesized that visual correlation of episodic increase in HRV with minimal oxygen desaturations on normal OPO (oxygen desaturation index less than 5 events/h) is predictive of OSA. Methods: A retrospective analysis of patients undergoing OPO and PSG in 1 year was performed. We included only OPO performed on room air and interpreted as normal. Visual correlation between simultaneous increase in HRV and minimal oxygen desaturation was independently assessed by three raters, resulting in the consensus agreement. The primary outcome was presence of OSA on the subsequent PSG. Results: Of 936 patients with OPO and PSG, 109 patients had normal overnight oximetry study on room air. Of these, 65 (60%) were females, median (interquartile range) age was 54 years (44, 67), body mass index was 29 kg/m 2 (25, 32), and the median oxygen desaturation index was 1.8 events/h (1, 2.7). Consensus agreement identifed 54 patients with visual correlation between pulse and minimal oxygen desaturations. Thirty-two patients (29%) were found to have OSA on PSG, of which 24 (75%) could have been accurately predicted by the consensus agreement (odds ratio 4.70, 95% confdence interval 1.87 11.8, P .001). When adjusted for pertinent clinical and demographic variables, consensus agreement was independently associated with diagnosis of OSA on subsequent PSG (odds ratio 5.6, 95% confdence interval 1.76 20.9, P = .003). Conclusions: Visual correlation between episodic increase in HRV and minimal oxygen desaturations on OPO is an independent predictor of OSA, and promising marker for clinical use.
KW - Heart rate variability
KW - Obstructive sleep apnea
KW - Oxygen desaturation index
KW - Pulse oximetry
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U2 - 10.5664/jcsm.7614
DO - 10.5664/jcsm.7614
M3 - Article
C2 - 30736881
AN - SCOPUS:85062107600
SN - 1550-9389
VL - 15
SP - 195
EP - 200
JO - Journal of Clinical Sleep Medicine
JF - Journal of Clinical Sleep Medicine
IS - 2
ER -