RESUMO
Objetivos. Averiguar la correlación entre la presión arterial de oxígeno (PaO2) y la saturación de la oxihemoglobina por pulsioximetría (SpO2) en pacientes que acuden a Urgencias con sospecha de insuficiencia respiratoria aguda. Material y métodos. Estudio prospectivo, observacional y multicéntrico realizado en los servicios de Urgencias de 3 hospitales españoles. Resultados. Se incluyeron 166 pacientes, que presentaron unos valores medios±desviación estándar de PaO2, SpO2 y fracción inspiratoria de O2 (FiO2) de 61,64±17,3mmHg, 87,61±8,8% y 0,28±0,15%, respectivamente. La mediana de los cocientes PaO2/FiO2 y SpO2/FiO2 fue de 256,6 y 359,2, respectivamente. La correlación entre la PaO2/FiO2 y la SpO2/FiO2 fue de 0,745 (p<0,001). Conclusiones. La SpO2/FiO2 se puede utilizar como estimación de la PaO2/FiO2 y conocer el estado de oxigenación del paciente con insuficiencia respiratoria aguda (AU)
Objectives. To ascertain the correlation between the partial pressure of oxygen (PaO2) and oxyhaemoglobin saturation by pulse oximetry (SpO2) in patients who were admitted to the emergency department with suspected acute respiratory failure. Material and methods. A prospective, observational multicentre study was conducted in the emergency departments of 3 Spanish hospitals. Results. The study included 166 patients who presented mean±standard deviation PaO2, SpO2 and fraction of inspired oxygen (FiO2) values of 61.64±17.3mmHg, 87.61±8.8% and 0.28±0.15%, respectively. The median PaO2/FiO2 and SpO2/FiO2 ratios were 256.6 and 359.2, respectively. The correlation between PaO2/FiO2 and the SpO2/FiO2 was 0.745 (P<.001). Conclusions. The SpO2/FiO2 ratio can be used to calculate PaO2/FiO2 and determine the oxygenation state of patients with acute respiratory failure (AU)
Assuntos
Humanos , Oxiemoglobinas/análise , Oximetria/métodos , Insuficiência Respiratória/fisiopatologia , Gasometria/métodos , Doença Aguda , Estudos Prospectivos , Serviço Hospitalar de Emergência/estatística & dados numéricos , Tratamento de Emergência/métodos , Testes de Função Respiratória/métodosRESUMO
OBJECTIVES: To ascertain the correlation between the partial pressure of oxygen (PaO2) and oxyhaemoglobin saturation by pulse oximetry (SpO2) in patients who were admitted to the emergency department with suspected acute respiratory failure. MATERIAL AND METHODS: A prospective, observational multicentre study was conducted in the emergency departments of 3 Spanish hospitals. RESULTS: The study included 166 patients who presented mean±standard deviation PaO2, SpO2 and fraction of inspired oxygen (FiO2) values of 61.64±17.3mmHg, 87.61±8.8% and 0.28±0.15%, respectively. The median PaO2/FiO2 and SpO2/FiO2 ratios were 256.6 and 359.2, respectively. The correlation between PaO2/FiO2 and the SpO2/FiO2 was 0.745 (P<.001). CONCLUSIONS: The SpO2/FiO2 ratio can be used to calculate PaO2/FiO2 and determine the oxygenation state of patients with acute respiratory failure.
