Objective To explore the incidence of increased hemoglobin(Hb)in elderly women with obstruc-tive sleep apnea(OSA)and its influencing factors.Methods The medical record data of 363 elderly female patients diagnosed with OSA in six tertiary hospitals from January 2015 to October 2017 were selected.The patients were divided into simple OSA group(329 cases)and OSA complicated with increased Hb group(34 cases)according to the occurrence of increased Hb.The baseline data,polysomnography monitoring data and history of relevant comorbidities were com-pared between the two groups.Multivariate linear regression analysis was used to analyze the influencing factors of Hb level in the elderly OSA women.Results A total of 363 elderly female OSA patients were enrolled,and 34 cases(9.37%)of the elderly female OSA patients had increased Hb.According to the oxygen desaturation index(ODI),there were 9 cases(5.96%)of mild OSA patients,7 cases(7.07%)of moderate OSA patients,and 18 cases(15.93%)of severe OSA patients had increased Hb.The ODI,time with blood oxygen saturation less than 90%,diastolic blood pressure,red blood cell,white blood cell and eosinophil levels of the OSA complicated with increased Hb group were significantly higher than those in the simple OSA group,and the lowest oxygen saturation(LSpO2)and the mean oxygen saturation(MSpO2)in the OSA group were significantly lower than those in the simple OSA group,and the differences were significant(P<0.05).The results of multivariate linear regression analysis showed that age,white blood cell,time with blood oxygen saturation less than 90%and diastolic blood pressure were the influencing factors of Hb level(P<0.05).Conclusion The incidence rate of increased Hb in the elderly female patients with OSA is elevated,and the incidence rate of increased Hb is significantly high in the severity OSA patients.Higher levels of white blood cell,diastolic blood pressure,time with blood oxygen saturation less than 90%and younger age are the risk factors for increased Hb in this population.
Obstructive sleep apneaElderly womenHemoglobinOxygen desaturation index