"Desenvolvimento de monitor de oximetria contínua para diagnóstico de apnéia obstrutiva do sono na unidade coronária" / Development of a continuous overnight oximetry monitor for the diagnosis of obstructive sleep apnea in the coronary care unit.

AUTOR(ES)

Simone de Oliveira Alvarenga Prezotti

DATA DE PUBLICAÇÃO

2005

RESUMO

BACKGROND: A high prevalence of Obstructive sleep apnea (OSA) has been reported in patients with coronary artery disease (CAD). Several OSA related mechanisms, such as oxygen desaturation, high sympathetic activity, increased cardiac oxygen demand and a prothrombotic state, may be particularly dangerous in acute CAD patients. Nevertheless, OSA is frequently underdiagnosed and patients with CAD are not routinely screened for OSA when admitted to the Coronary Care Unit (CCU). OBJECTIVES: To build and validate a continuous overnight oximetry, by recording oximetry data derived from the CCU monitor, for the detection of OSA in acute CAD patients. DESIGN: We studied consecutive patients recruited on the basis of the presence of acute CAD requiring CCU, analyzed overnight continuous oximetry data and further compared it with full overnight polysomnography (PSG). RESULTS: Thirty-seven patients underwent overnight oxygen saturation monitoring in the CCU and 20 of these patients were submitted to PSG, performed within 3 months after hospital discharge. OSA was present in 43% and 45% of the patients studied by overnight oxygen saturation monitoring and PSG, respectively. The oxymetry derived oxygen desaturation index and the PSG derived apnea hypopnea index were strongly correlated (r = 0,737; p <0,0001). There was a good level of agreement between abnormal oxymetric results and abnormal PSG results (kappa = 0.898; p <0,0001). Overnight oximetry had a sensitivity of 88.9% and a specificity of 100% for OSA diagnosis. CONCLUSIONS: Continuous overnight oximetry derived from monitors that are already present in the CCU is a simple and accurate method for the diagnosis of OSA in the CCU.

ASSUNTO(S)

coronariopatia oximetry apnÉia do sono tipo obstrutiva/diagnóstico oximetria/métodos obstructive sleep apnea coronary disease

Documentos Relacionados

• Validation of short induced sleep polysomnography for the diagnosis of obstructive sleep apnea
• Screening for obstructive sleep apnea using pulse oximetry.
• Validação de sistema portátil de monitorização respiratória para o diagnóstico de apneia obstrutiva do sono em pacientes com doença arterial coronariana
• Apnéia obstrutiva do sono: Estudo por meio de telerradiografias horizontais e verticais.
• Nasopharyngoscopic study in obstructive sleep apnea syndrome: comparision between Muller maneuver and induced sleep