TABLE 14

Utility of Cardiovascular Parameters in Predicting OSAS

MeasureSleep EvaluationSourceLevelNo.Findings
Pulse rateOximetryConstantin et al63IV25 OSASPulse rate decreases in children who have OSAS after AT
Pulse rateHome cardiorespiratory studiesNoehren et al264III5 OSASPulse rate changes poor at detecting differences between respiratory events and movements, and between central and obstructive apneas
20 controls
Heart rate variabilityPSGDeng et al64IV34 OSASHeart rate chaos intensity had sensitivity of 72% and specificity of 81% for OSAS
18 controls
Pulse transit timePSGKatz et al265III24 SDBDepending on the severity of the event, 80%–91% of obstructive respiratory events were associated with pulse transit time changes. However, pulse transit time changes also occurred with spontaneous arousals from sleep
10 controls
Heart rate, pulse transit timePSGFoo et al266 (similar data published in Foo and Lim267)III15 suspected OSASPulse rate had 70% sensitivity and 89% specificity, and pulse transit time had 75% sensitivity and 92% specificity in identifying obstructive events
Peripheral arterial tonometryPSGTauman et al268II40 OSASPeripheral arterial tonometry had sensitivity of 95% and specificity of 35% in identifying EEG arousals
20 controls