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    The effect of Blood Urea Nitrogen/Albumin Ratio in the Short-Term Prognosis of Chronic Obstructive Pulmonary Disease
    (Erciyes Univ Sch Medicine, 2021) Baha, Ayse Demir; Fendoglu, Turkan Zeynep Isikdogan; Kokturk, Nurdan; Kilic, Hatice; Hasanoglu, Hatice Canan; Arslan, Sertac; Alhan, Aslihan
    Objective: There is no definite laboratory parameter in predicting short-term prognosis in patients with chronic obstructive pulmonary disease (COPD). Our aim was to evaluate the prognostic effect of serum blood urea nitrogen (BUN)/albumin ratio in COPD patients. Materials and Methods: A retrospective study comprising of 264 COPD patients who were in exacerbation period and selected from 4 centers was carried out. Data on demographic characteristics, disease characteristics, comorbid conditions and short-term prognosis of patients were obtained. and analyzed. Results: The BUN/Albumin ratio was higher in patients with oxygen saturation <90% (p=0.004). There was no difference between global obstructive lung disease (GOLD) stages means of BUN/Albumin ratio but this rate was higher in those with infective exacerbations (p=0.019). The BUN/albumin ratio of patients who were discharged (5.3 +/- 2.2) was significantly higher than the patients who were transferred to the intensive care unit [ICU] (11.7 +/- 6.0) (p<0.0001). The cut-off level of BUN/albumin ratio in prediction of the need for ICU was7.2 (sensitivity 80%, specificity 85.4%) and the area under the receiver operating characteristic (ROC) curve was 0.911 (95% CI: 0.861-0.961) (p<0.001). The cut-off level of BUN/albumin ratio in prediction of mortality was 8.1 (sensitivity 88.2%, specificity 85.4%) and the area under the ROC curve was 0.963 (95% CI: 0.930-0.995) (p<0.001). Conclusion: BUN/albumin ratio can be used as an affordable, inexpensive and practical method for determining the short-term prognosis in hospitalized COPD patients. Prospective studies involving more patients are needed.