RT Journal Article
SR Electronic
T1 Sensitivity and specificity of neck circumference in obstructive sleep apnea syndrome
JF European Respiratory Journal
JO Eur Respir J
FD European Respiratory Society
SP P2293
VO 44
IS Suppl 58
A1 Carmen Ardelean
A1 Diana Dimitriu
A1 Stefan Frent
A1 Iosif Marincu
A1 Daniel Lighezan
A1 Stefan Mihaicuta
YR 2014
UL http://erj.ersjournals.com/content/44/Suppl_58/P2293.abstract
AB Objectives: A cross-sectional review to assess the ability of the neck circumference(NC) to predict obstructive sleep apnoea syndrome(OSAS) in a population group from Timisoara, Romania.Methods: 836 consecutive adult male patients referred to a sleep lab were polysomnographic evaluated for OSAS between 2005-2013. NC was recorded. With the area under curve(AUC) derived from the receiver-operating characteristic(ROC) curve we assessed the classification ability of NC for the diagnostic of OSAS. Sensitivity, specificity, positive predicted value(PPV), negative predicted value(NPV), positive likelihood ratio(LR+) and negative likelihood ratio(LR-) were calculated for different cut-off points.Results: Age=19-83years; NC=30-62cm. 778(93.1%) patients with OSAS, with apnoea-hypopnea index(AHI)> 5/hour. median AHI=38.75/h.Correlation was found between NC and AHI (ρ=0.35, p<0.001). AUC=0.71 (95% CI 0.63-0.79, p<0.001)[figure1]. The optimal NC was 41 cm, sensitivity=0.8099, specificity=0.5185, PPV=0.9588, NPV=0.1647. LR+=1.68 indicating that a male patient with NC>41 is 1.68 times more likely to have OSASView this table:ROC analysis.Conclusion: NC measurement is easy to obtain with no additional costs. NC is a reliable measurement in patients suspected to have OSAS on a population referred to a sleep lab. Patients with NC of more than 41 cm should have a priority for the overnight sleep study.