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Updated: Jul 19, 2026
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Drug-Induced Sleep Endoscopy (DISE) with Target Controlled Infusion (TCI) and Bispectral Analysis in Obstructive Sleep Apnea
Published on: December 6, 2016
[Sleep apnea syndrome and hypertension using desaturation index]
1Department of Geriatric Medicine, Tokyo University Hospital.
Nihon Ronen Igakkai Zasshi. Japanese Journal of Geriatrics
|August 11, 2000
Summary
Obstructive sleep apnea (OSA) poses a higher hypertension risk than central sleep apnea (CSA) in elderly individuals. The severity of apneas, not oxygen desaturation, is linked to hypertension in sleep apnea syndrome (SAS).
Area of Science:
- Sleep Medicine
- Cardiology
- Gerontology
Context:
- Sleep apnea syndrome (SAS) is prevalent in elderly populations.
- Hypertension is a common comorbidity with SAS.
- The distinct roles of obstructive apnea (OA) and central apnea (CA) in SAS pathogenesis require further elucidation.
Purpose:
- To investigate the differential impact of OA and CA on nocturnal oxygen desaturation and hypertension in elderly subjects with SAS.
- To determine the relationship between apnea severity, oxygen desaturation, and hypertension within the SAS spectrum.
Summary:
- A sleep study on 41 elderly subjects (mean age 69.5) compared central-type (n=8), obstructive-type (n=21), and control (n=12) groups.
- Obstructive-type subjects showed significantly higher desaturation index (DI) and hypertension prevalence (71.4%) compared to central-type (50.0%) and control (33.3%) groups.
- Mean blood pressure correlated significantly with apnea index (AI), with hypertensive individuals exhibiting higher AI, suggesting apnea severity is key in SAS-related hypertension.
Impact:
- Findings indicate that obstructive apneas pose a greater hypertension risk than central apneas in elderly SAS patients.
- Hypertension in SAS pathogenesis appears more closely related to the severity of apneas than to the degree of oxyhemoglobin desaturation.
- This research highlights the importance of differentiating apnea types for risk stratification and management of hypertension in SAS.
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