Accuracy of peripheral arterial tonometry in the diagnosis of obstructive sleep apnea.
BACKGROUND
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.


OBJECTIVE
To evaluate the accuracy of peripheral arterial tonometry in the diagnosis of obstructive sleep apnea.


METHODS
Contemporary cohort cross-sectional study. Thirty patients with suspected obstructive sleep apnea underwent peripheral arterial tonometry and assisted nocturnal polysomnography concomitantly.


RESULTS
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).


CONCLUSIONS
Peripheral arterial tonometry is a useful portable device for the diagnosis of obstructive sleep apnea; its accuracy is higher in moderate and severe cases.
Department of Otorhinolaryngology, Hospital São Camilo, Pompéia, São Paulo, SP, Brazil; Otorhinolaryngology and Head and Neck Surgery and Sleep Medicine Center of São Paulo (NOSP), São Paulo, SP, Brazil. Electronic address: japorl@uol.com.br.
José Antonio
JA
Pinto
Department of Otorhinolaryngology, Hospital São Camilo, Pompéia, São Paulo, SP, Brazil; Otorhinolaryngology and Head and Neck Surgery and Sleep Medicine Center of São Paulo (NOSP), São Paulo, SP, Brazil.
Luciana Balester Mello de
LB
Godoy
Department of Otorhinolaryngology, Hospital São Camilo, Pompéia, São Paulo, SP, Brazil.
Renata Coutinho
RC
Ribeiro
Department of Otorhinolaryngology, Hospital São Camilo, Pompéia, São Paulo, SP, Brazil.
Elcio Izumi
EI
Mizoguchi
Department of Otorhinolaryngology, Hospital São Camilo, Pompéia, São Paulo, SP, Brazil; Otorhinolaryngology and Head and Neck Surgery and Sleep Medicine Center of São Paulo (NOSP), São Paulo, SP, Brazil.
Lina Ana Medeiros
LA
Hirsch
Department of Otorhinolaryngology, Hospital São Camilo, Pompéia, São Paulo, SP, Brazil; Otorhinolaryngology and Head and Neck Surgery and Sleep Medicine Center of São Paulo (NOSP), São Paulo, SP, Brazil.
Leonardo Marques
LM
Gomes
D000328:Adult; D000368:Aged; D001158:Arteries / Q000503:physiopathology; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D008365:Manometry / Q000379:methods*; D008875:Middle Aged; D017286:Polysomnography; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D020181:Sleep Apnea, Obstructive / Q000175:diagnosis* / Q000503:physiopathology; D055815:Young Adult
Diagnosis; Diagnóstico; Obstructive sleep apnea syndrome; Polissonografia; Polysomnography; Síndromes da apneia do sono