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Published on: November 29, 2024
Decreased survival in diabetic patients with heart failure due to systolic dysfunction
Masoor Kamalesh1, Usha Subramanian, Stephen Sawada
1Krannert Institute of Cardiology and VA Medical Center, Indiana University School of Medicine, Indianapolis, IN 46202, USA. masoor.kamalesh@med.va.gov
Insights
Diabetic patients with heart failure (HF) have higher mortality rates than non-diabetic patients, even with recent therapeutic advancements. This prospective study confirms diabetes remains a significant risk factor for death in HF patients.
Area of Science:
- Cardiology
- Diabetology
- Clinical Medicine
Background:
- Heart failure (HF) prognosis has improved with new therapies.
- The impact of these advances on diabetic HF patients in clinical practice remains unclear.
- Prospective studies are needed to evaluate diabetic HF patient outcomes.
Purpose of the Study:
- To prospectively investigate the prognosis of diabetic patients with heart failure (HF) and left ventricular systolic dysfunction.
- To compare mortality rates between diabetic and non-diabetic HF patients.
- To identify predictors of mortality in this population.
Main Methods:
- Prospective enrollment of 495 HF patients with systolic dysfunction from October 1999 to November 2000.
- Data collection via electronic medical records, including comorbidities, medications, and echocardiograms.
- Mean follow-up duration of 2.7 years for mortality assessment.
Main Results:
- 59% of enrolled HF patients had diabetes (293/495).
- Diabetic patients showed higher rates of hypertension and diuretic use.
- Mortality was significantly higher in the diabetic group (37%) compared to the non-diabetic group (24%).
- Independent predictors of death included diabetes, age, serum creatinine, and diuretic use.
Conclusions:
- Diabetic patients with heart failure experience higher mortality rates than non-diabetic patients.
- Despite advances in HF therapy, diabetes remains a significant adverse prognostic factor.
- Further research may be needed to optimize HF management in diabetic populations.
Background:
Prognosis of patients with heart failure (HF) has improved in recent years due to advances in therapy. Whether this is also true for diabetic subjects with HF in clinical practice has not been studied in a prospective manner.
Methods:
All patients with HF and left ventricular systolic dysfunction attending the outpatient clinic at our Veteran's Hospital between October 1999 and November 2000 were enrolled in our study and followed prospectively. Electronic medical records were accessed for data on comorbid conditions, medications, echocardiogram results and mortality information. Mean follow-up was 2.7 years.
Results:
Of 495 patients with HF due to systolic dysfunction enrolled in the study, 293 (59%) had diabetes. Prevalence of hypertension, diuretic use and angiotensin converting enzyme inhibitor use was higher among diabetics. Beta-blocker usage was equal and high in both groups (60%). On follow-up, 109/273 (37%) patients in the diabetic group died, compared with 49/202 (24%) in the non-diabetic group. Independent predictors of death were diabetes (p<0.005, OR=1.73), age at enrollment (p<0.0001, OR=1.06), serum creatinine (p<0.01, OR=1.44) and diuretic use (p=0.038, OR=1.85). Beta-blocker use was associated with a decreased risk of death on univariate analysis only.
Conclusions:
Our results show that diabetic patients with HF continue to have higher mortality than non-diabetic patients with HF despite advances in therapy.
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