Abstract：
:Obstructive sleep apnea (OSA) is a risk factor for perioperative complications, but many OSA patients present undiagnosed. While polysomnography (PSG) is the "gold standard" for diagnosis, its application is technology-intense, time-consuming, expensive, and requires specialists, often delaying surgery. Thus, miniaturized devices were developed for OSA screening aimed at ruling out major OSA while measuring a lesser number of biological signals. We evaluated the accuracy of a photoplethysmography (PPG)-based device for OSA detection. 48 patients with established or strongly suspected (STOP-Questionnaire) OSA scheduled for surgery underwent in their preoperative nights parallel recordings by PPG and a classic polygraphy (PG) devices (SomnoLab2®). We compared the diagnostic accuracy of the PPG in diagnosing mild [Apnea-/Hypopnea-Index (AHI) 5-14 events/h] and moderate-to-severe OSA (AHI > 15). PPG and PG-derived AHI correlated significantly (r = 0.85, p < 0.0001) and high area under curve (AUC) in receiver operator characteristics (ROC) values were seen for both AHI thresholds (0.93 and 0.95, respectively). For an AHI > 5, sensitivity was 100%, specificity 44%, positive predictive value (PPV) 62%, negative predictive value (NPV) 100%, likelihood ratio (LHR) 1.79, and Cohen κ was 0.43. For an AHI > 15, sensitivity was 92%, specificity 77%, PPV 60%, NPV 96%, LHR 4.04, and Cohen κ was 0.59. In a typical perioperative cohort of confirmed and suspected OSA patients, PPG reliably detected OSA patients while showing some false-positive results. Such devices are helpful for preoperative OSA screening.
journal_name
J Clin Monit Computjournal_title
Journal of clinical monitoring and computingauthors
Faßbender P,Haddad A,Bürgener S,Peters Jdoi
10.1007/s10877-018-0151-2subject
Has Abstractpub_date
2019-04-01 00:00:00pages
341-345issue
2eissn
1387-1307issn
1573-2614pii
10.1007/s10877-018-0151-2journal_volume
33pub_type
杂志文章abstract：:We tested whether the ratio of alveolar dead space to alveolar tidal volume (VD(alv)/VT(alv)) can detect states of low pulmonary blood flow (PBF) in a non-invasive way. Fifteen patients undergoing cardiovascular surgeries with cardiopulmonary bypass (CPB) were studied. CPB is a technique that excludes the lungs from t...
journal_title：Journal of clinical monitoring and computing
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journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章,多中心研究
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abstract：:Severe traumatic brain injury (TBI) patients are monitored with continuous arterial blood pressure (ABP) and intracranial pressure (ICP). The pressure reactivity index (PRx) is a frequently used correlation coefficient between ABP and ICP to inform clinicians at the bedside about trends in global cerebrovascular press...
journal_title：Journal of clinical monitoring and computing
pub_type： 信件
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更新日期：2020-02-08 00:00:00
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journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
doi：10.1023/a:1021246119194
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journal_title：Journal of clinical monitoring and computing
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journal_title：Journal of clinical monitoring and computing
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journal_title：Journal of clinical monitoring and computing
pub_type： 杂志文章
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journal_title：Journal of clinical monitoring and computing
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journal_title：Journal of clinical monitoring and computing
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journal_title：Journal of clinical monitoring and computing
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journal_title：Journal of clinical monitoring and computing
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