Info

PM not disclosed. PSG hypopneas included arousals. Sensitivity and specificity estimated from receiver operating characteristic (ROC) curves.

Note-. Data obtained with portable monitor simultaneous with polysomnography; Chicago, apnea/hypopnea index (AHI) and respiratory disturbance index (RDI) calculated from criteria proposed in Reference (16); Medicare, AHI and RDI calculated from criteria required by Medicare (17); AHI per hour of sleep with polysomnography; RDI, AHI per hour of recording unless otherwise indicated for portable monitor. "Cannot be calculated due to division by 0.

Abbreviations: corr, corresponding sensitivity or specificity when best sensitivity and specificity at different RDI or AHI thresholds (when this occurs, there are a number of nondiagnostic tests); est, estimated from receiver operating characteristic (ROC) curves; Evid, evidence grade; H, high; LR, likelihood ratio; L, low; NA, not available; Non (%), percent of nondiagnostic tests; NPV, negative predictive value = true negatives/true negatives plus false negatives; PAT, peripheral arterial tonometry; PSG, attended polysomnography; PM, portable monitor; Prev (%), prevalence in percent; PPV, positive predictive value = true positives/true positives plus false positives; red, reduction; Sens, sensitivity (%); Spec, specificity (%).

TABLE 5 Peripheral Arterial Tonometry Laboratory Vs. Home

Study AH I RDI Prev (%) Sens Spec LR(H) LR(L) Non (%) PPV NPV Evid Comment^

61 (Chicago criteria for 5 5 100 100 100 a a 0 100 100 I

AHI)

61 (Medicare criteria for 5 4.7 55 100 100 a a 0 100 100 I AHI)_

Note-. Laboratory, data obtained from polysomnography; Home, data obtained with portable monitor unattended in the home; Chicago, apnea/hypopnea index (AHI) and respiratory disturbance index (RDI) calculated from criteria proposed in Reference (16); Medicare, AHI and RDI calculated from criteria required by Medicare (17); AHI per hour of sleep with polysomnography; RDI and AHI per hour of recording unless otherwise indicated for portable monitor. "Cannot be calculated due to division by 0.

bHigh prevalence (100%) makes generalization difficult. Oximeter sampling rates identical between PSG and PM with a sampling rate of one second.

┬░RDI was oxygen desaturation index for PAT (i.e., essentially functioned as an oximeter). Oximeter sampling rates identical between PSG and PM with a sampling rate of one second.

Abbreviations: Evid, evidence grade; H, high; L, low; LR, likelihood ratio; Non (%), percent of nondiagnostic tests; NPV, negative predictive value = true negatives/true negatives plus false negatives; PAT, peripheral arterial tonometry; PSG, attended polysomnography; PM, portable monitor; Prev (%), prevalence in percent; PPV, positive predictive value = true positives/true positives plus false positives; Sens, sensitivity (%); Spec, specificity (%).

Sleep Apnea

Sleep Apnea

Have You Been Told Over And Over Again That You Snore A Lot, But You Choose To Ignore It? Have you been experiencing lack of sleep at night and find yourself waking up in the wee hours of the morning to find yourself gasping for air?

Get My Free Ebook


Post a comment