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[Pulse oximetry screening for sleep-disordered breathing in stroke]
T E Wessendorf1, G Alymov, Y M Wang
1Ruhrlandklinik, Abt. Pneumologie/Schlaf- und Beatmungsmedizin, Essen, Germany. thomas.wessendorf@uni-essen.de
Pneumologie (Stuttgart, Germany)
|June 14, 2002
Summary
Automated pulse oximetry effectively screens for sleep-disordered breathing (SDB) in stroke patients. This method offers a feasible alternative to polysomnography for identifying SDB in high-risk populations.
Area of Science:
- Neurology
- Sleep Medicine
- Cardiorespiratory Physiology
Context:
- Stroke patients exhibit a high prevalence of sleep-disordered breathing (SDB), particularly obstructive sleep apnea.
- Current diagnostic methods like polysomnography are not routinely feasible for screening in this population.
- Pulse oximetry presents a potential simple screening tool.
Purpose:
- To evaluate the efficacy of automated pulse oximetry analysis for screening sleep-disordered breathing (SDB) in stroke patients.
- To compare the oxygen desaturation index (ODI) derived from pulse oximetry with the polysomnographic apnoea-hypopnoea index (AHI).
Summary:
- A strong correlation (r=0.84, p<0.001) was found between AHI and ODI in 184 stroke patients.
- Sensitivity ranged from 32-83% and specificity from 99-96% depending on SDB and ODI cut-off points.
- The area under the ROC curve indicated a diagnostic accuracy of 96% for automated pulse oximetry.
Impact:
- Automated pulse oximetry analysis provides reliable results for SDB screening in stroke patients.
- This technique could be implemented in clinical settings for populations with a high pre-test probability of SDB.
- Facilitates earlier identification and management of SDB in stroke survivors, potentially improving outcomes.