Impact of diabetes mellitus on mortality in patients with acute heart failure: A prospective cohort study

Min Gyu Kong, Se Yong Jang, Jieun Jang, Hyun Jai Cho, Sangjun Lee, Sang Eun Lee, Kye Hun Kim, Byung Su Yoo, Seok Min Kang, Sang Hong Baek, Dong Ju Choi, Eun Seok Jeon, Jae Joong Kim, Myeong Chan Cho, Shung Chull Chae, Byung Hee Oh, Soo Lim, Sue K. Park, Hae Young Lee

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Abstract

Background: Although more than one-third of the patients with acute heart failure (AHF) have diabetes mellitus (DM), it is unclear if DM has an adverse impact on clinical outcomes. This study compared the outcomes in patients hospitalized for AHF stratified by DM and left ventricular ejection fraction (LVEF). Methods: The Korean Acute Heart Failure registry prospectively enrolled and followed 5625 patients from March 2011 to February 2019. The primary endpoints were in-hospital and overall all-cause mortality. We evaluated the impact of DM on these endpoints according to HF subtypes and glycemic control. Results: During a median follow-up of 3.5 years, there were 235 (4.4%) in-hospital mortalities and 2500 (46.3%) overall mortalities. DM was significantly associated with increased overall mortality after adjusting for potential confounders (adjusted hazard ratio [HR] 1.11, 95% confidence interval [CI] 1.03-1.22). In the subgroup analysis, DM was associated with higher a risk of overall mortality in heart failure with reduced ejection fraction (HFrEF) only (adjusted HR 1.14, 95% CI 1.02-1.27). Inadequate glycemic control (HbA1c ≥ 7.0% within 1 year after discharge) was significantly associated with a higher risk of overall mortality compared with adequate glycemic control (HbA1c < 7.0%) (44.0% vs. 36.8%, log-rank p = 0.016). Conclusions: DM is associated with a higher risk of overall mortality in AHF, especially HFrEF. Well-controlled diabetes (HbA1c < 7.0%) is associated with a lower risk of overall mortality compared to uncontrolled diabetes. Trial registration ClinicalTrial.gov, NCT01389843. Registered July 6, 2011. https://clinicaltrials.gov/ct2/show/NCT01389843

Original languageEnglish
Article number49
JournalCardiovascular Diabetology
Volume19
Issue number1
DOIs
Publication statusPublished - 2020 May 2

All Science Journal Classification (ASJC) codes

  • Internal Medicine
  • Endocrinology, Diabetes and Metabolism
  • Cardiology and Cardiovascular Medicine

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    Kong, M. G., Jang, S. Y., Jang, J., Cho, H. J., Lee, S., Lee, S. E., Kim, K. H., Yoo, B. S., Kang, S. M., Baek, S. H., Choi, D. J., Jeon, E. S., Kim, J. J., Cho, M. C., Chae, S. C., Oh, B. H., Lim, S., Park, S. K., & Lee, H. Y. (2020). Impact of diabetes mellitus on mortality in patients with acute heart failure: A prospective cohort study. Cardiovascular Diabetology, 19(1), [49]. https://doi.org/10.1186/s12933-020-01026-3