{Reference Type}: Journal Article
{Title}: Accuracy of peripheral arterial tonometry in the diagnosis of obstructive sleep apnea.
{Author}: Pinto JA;Godoy LB;Ribeiro RC;Mizoguchi EI;Hirsch LA;Gomes LM;
{Journal}: Braz J Otorhinolaryngol
{Volume}: 81
{Issue}: 5
{Year}: Sep-Oct 2015
{Factor}: 2.474
{DOI}: 10.1016/j.bjorl.2015.07.005
{Abstract}: <B>BACKGROUND: </B>The use of handheld devices that assess peripheral arterial tonometry has emerged as an auxiliary method for assessment and diagnosis of obstructive sleep apnea syndrome.<BR><B>OBJECTIVE: </B>To evaluate the accuracy of peripheral arterial tonometry in the diagnosis of obstructive sleep apnea.<BR><B>METHODS: </B>Contemporary cohort cross-sectional study. Thirty patients with suspected obstructive sleep apnea underwent peripheral arterial tonometry and assisted nocturnal polysomnography concomitantly.<BR><B>RESULTS: </B>The mean apnea/hypopnea index by peripheral arterial tonometry was significantly higher than that by polysomnography (p<0.001), but the values of both sleep studies were significantly correlated (r=0.762). There was a high correlation between variables: minimum oxygen saturation (r=0.842, p<0.001), oxygen saturation<90% (r=0.799, p<0.001), and mean heart rate (r=0.951, p<0.001). Sensitivity and specificity were 60% and 96.2% (AUC: 0.727; p=0.113), respectively, when at a threshold value of 5 events/h. In severe cases (≥30 events/h), the result was a sensitivity of 77.8% and a specificity of 86.4% (AUC: 0.846, p=0.003).<BR><B>CONCLUSIONS: </B>Peripheral arterial tonometry is a useful portable device for the diagnosis of obstructive sleep apnea; its accuracy is higher in moderate and severe cases.