Multiple logistic regression analysis of risk factors in elderly pneumonia patients: QTc interval prolongation as a prognostic factor

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• 作者：Yasuyuki Taooka (17) (18)
  Gen Takezawa (17)
  Miki Ohe (18)
  Akihisa Sutani (18)
  Takeshi Isobe (18)
  
  17. Department of General Medicine ; Aki-Ohta Hospital ; Shimodono-Gohchi 236 ; Aki-Ohta-Cho ; Yamagata-Gun ; Hiroshima ; 731-3622 ; Japan
  18. Division of Clinical Oncology and Respiratory Medicine ; Department of Internal Medicine ; Shimane University Faculty of Medicine ; Izumo ; Japan
  
• 关键词：Elderly ; Electrocardiogram ; QTc interval ; Pneumonia
• 刊名：Multidisciplinary Respiratory Medicine
• 出版年：2014
• 出版时间：December 2014
• 年：2014
• 卷：9
• 期：1
• 全文大小：285 KB
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• 刊物主题：Pneumology/Respiratory System;
• 出版者：BioMed Central
• ISSN：2049-6958

文摘

Background Acute pneumonia is a serious problem in the elderly and various risk factors have already been reported, but the involvement of QTc interval prolongation remains uncertain. The aim of this study was to elucidate the prognostic factors for the development of pneumonia in elderly patients and to study the possible involvement of QTc interval prolongation. Methods The subjects were 249 hospitalized pneumonia patients more than 65 years old in Aki-Ohta Hospital from January 2010 to December 2013. Community-acquired pneumonia patients and nursing care and healthcare-associated pneumonia patients were included in the study. The pneumonia severity index, vital signs, blood chemistry data and ECG findings were retrospectively compared using multiple logistic regression analysis. Results 39 patients died within 30 days from onset. The clinical features related to poor prognosis were: advanced age, past history of cerebral vascular disease and/or diabetes mellitus, decreased serum albumin level, higher CURB-65 or PORT index scores and QTc interval prolongation. Patients showing a prolonged QTc interval had a higher mortality than those with a normal QTc interval. A prolonged QTc interval was not related to serum calcium concentration and/or treatment with QTc prolongation drug, clarithromycin or azithromycin, but related to age, lower albumin concentration and past history of diabetes mellitus. Conclusions These findings suggest potential prognostic factors for pneumonia in elderly patients, including a prolonged QTc interval (> 0.44 seconds).