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Is the Apnea/Hypopnea Index the Best Measure of Obstructive Sleep Apnea?

by Amy Hamaker • December 9, 2014

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Results: Thirty subjects underwent multilevel surgical treatment. The mean apnea-hypopnea index decreased from 44.9 ± 28.1 to 27.8 ± 26.4 events/hour (P = .008). Thirteen (43%) subjects in this heterogeneous sample achieved a response to surgery (defined as an apnea-hypopnea index reduction of ≥50% to an absolute level <15 events/hour), and body mass index ≤32 kg/m2 was associated with a higher likelihood (55%, 12/22) of response (P = .04). There was no overall change in C-reactive protein levels, but responders demonstrated a decrease (−1.02 ± 0.98 mg/L, P = .003) that was independent of changes in body weight. There were no significant changes in other health-related measures. Responders and nonresponders both demonstrated improvements in sleep-related quality of life.

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Explore This Issue
December 2014

Conclusions: This multilevel surgery was associated with a low likelihood of response in subjects with body mass index >32 kg/m2. Responders had decreased C-reactive protein levels that were independent of changes in body weight (Laryngoscope. 2010;120:1481-1488).

Depression, Sleepiness, and Disease Severity in Patients with Obstructive Sleep Apnea


ABSTRACT

Objectives/hypothesis: To determine if a relationship exists between depression, disease severity, and sleepiness in patients with obstructive sleep apnea (OSA).

Study design: Case control study.

Methods: Fifty-three consecutive patients with suspected OSA were evaluated before treatment and compared with controls by using the Beck Depression Inventory (BDI), Epworth Sleepiness Scale (ESS), and polysomnography.

Results: OSA was associated with an increased risk of depression in the study group compared to the control group (odds ratio = 6.3, 95% confidence interval: 1.9-20.6, P = .002); depression was seen in 35% of OSA patients and 8% of controls (P < .001). There was a significant correlation between BDI and ESS scores (r = 0.342, P = .012). In addition, ESS was significantly associated (P = .039) with depression in a linear regression model that controlled for race, sex, age, and respiratory disturbance index (RDI). RDI and depression were weakly associated (P = .056) in this model, and there was no correlation found between BDI scores and OSA disease severity (RDI)(r = 0.446).

Conclusions: Patients with OSA and daytime sleepiness are more likely to have depressive symptoms as compared with controls. OSA disease severity, as measured with the RDI score, is a weak predictor of BDI score, and no correlation was seen between the severity of OSA and BDI scores after controlling for other factors. However, there was a strong correlation between sleepiness (ESS) and disease severity (BDI). These data suggest that OSA patients with symptoms of excessive sleepiness have the highest risk of associated depressive symptoms and may benefit most from depression screening (Laryngoscope. 2010:120:2331-2335).

Pages: 1 2 3 4 5 6 7 | Single Page

Filed Under: Departments, Home Slider, Practice Focus, Sleep Medicine, Special Reports Tagged With: apnea/hypoapnea index, clinical, measurement, Obstructive sleep apnea, treatmentIssue: December 2014

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  • Variation in Apnea Hypopnea Index (AHI) Methods Interferes with Diagnosis, Treatment of Obstructive Sleep Apnea
  • Patient Outcomes Can Measure Success of Obstructive Sleep Apnea Surgery
  • Does Weight Loss Affect the Apnea/ Hypopnea Index?
  • Does Weight Loss Affect the Apnea/ Hypopnea Index?

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