[Death-Related Factors in Patients With Acute Exacerbation of Chronic Obstructive Pulmonary Disease Treated by Sequential Mechanical Ventilation].

Objective To analyze the death-related factors of elderly patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD) treated by sequential mechanical ventilation,so as to provide evidence for clinical practice. Methods The clinical data of 1204 elderly patients (≥60 years old) with AECOPD treated by sequential mechanical ventilation from June 2015 to June 2021 were retrospectively analyzed.The probability and influencing factors of death were analyzed. Results Among the 1204 elderly patients with AECOPD treated by sequential mechanical ventilation,167 (13.87%) died.Multivariate analysis showed that plasma procalcitonin ≥0.5 μg/L (=2.762, 95%=1.920-3.972, <0.001),daily invasive ventilation time ≥12 h (=2.202, 95%=1.487-3.262,<0.001),multi-drug resistant bacterial infection (=1.790,95%=1.237-2.591,=0.002),oxygenation index<39.90 kPa (=2.447,95%=1.625-3.685,<0.001),glycosylated hemoglobin >6% (=2.288,95%=1.509-3.470,<0.001),and acute physiology and chronic health evaluation Ⅱ score ≥25 points (=2.126,95%=1.432-3.156,<0.001) were independent risk factors for death in patients with AECOPD treated by sequential mechanical ventilation.Oral care>twice/d (=0.676,95%=0.457-1.000,=0.048) and sputum excretion>twice/d (=0.492, 95%=0.311-0.776, =0.002) were independent protective factors for death in elderly patients with AECOPD treated by sequential mechanical ventilation. Conclusions The outcomes of sequential mechanical ventilation in the treatment of elderly patients with AECOPD are affected by a variety of factors.To reduce the mortality,we put forward the following measures:attaching great importance to severe patients,restoring oxygenation function,shortening unnecessary invasive ventilation time,controlling blood glucose,preventing multidrug resistant bacterial infection,oral care twice a day,and sputum excretion twice a day.