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Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
Published on: December 11, 2017
Long-term outcome in diabetic heart failure patients treated with cardiac resynchronization therapy
Cecilia Fantoni1, François Regoli, Ali Ghanem
1Division of Cardiology, University Hospital, Magdeburg, Germany.
Insights
Diabetic patients with heart failure (HF) show similar positive outcomes to non-diabetic patients when treated with cardiac resynchronization therapy (CRT). This therapy improves function and survival rates for both groups, regardless of diabetes status.
Area of Science:
- Cardiology
- Diabetology
- Medical Technology
Background:
- Diabetes mellitus is a significant risk factor for heart failure (HF) complications.
- Understanding treatment efficacy in diabetic HF patients is crucial.
Purpose of the Study:
- To compare the effects of cardiac resynchronization therapy (CRT) on functional, structural, and long-term outcomes in diabetic versus non-diabetic HF patients.
Main Methods:
- A comparative study of 141 diabetic and 214 non-diabetic HF patients receiving CRT.
- Analysis of major adverse events (death, transplantation, LV assist device), hospitalizations, and CRT-D discharges.
Main Results:
- CRT improved functional capacity, ventricular geometry, and neurohumoral balance in both groups over 34 months.
- No significant differences in event-free survival, CRT-D interventions, or hospitalizations between diabetic and non-diabetic patients.
- Multivariable analysis identified factors like NYHA class, LV ejection fraction, beta-blocker use, renal function, and lead presence, but not diabetes, as predictors of poor outcome.
Conclusions:
- Diabetic HF patients experience comparable functional and survival benefits from CRT as non-diabetic patients.
- CRT is an effective treatment option for improving outcomes in diabetic HF populations.
Background:
Diabetes mellitus is an independent risk factor for increased morbidity and mortality in heart failure (HF) patients.
Aims:
To compare functional and structural improvement, as well as long-term outcome, between diabetic and non-diabetic HF patients treated with cardiac resynchronization therapy (CRT).
Methods:
We compared response to CRT in 141 diabetic and 214 non-diabetic consecutive patients. Major events were; death from any cause, urgent heart transplantation and implantation of a left ventricular (LV) assist device. Frequencies of hospitalisation and defibrillator (CRT-D) discharges were also analyzed.
Results:
CRT was able to significantly improve functional capacity, ventricular geometry and neurohumoral imbalance in both diabetic and non-diabetic patients over a median follow-up time of 34 months. Overall event-free survival was similar in diabetic and non-diabetic patients (HR 1.23, p=0.363), as was survival free from CRT-D interventions (HR 1.72; p=0.115) and hospitalisations (HR 1.12; p=0.500). On multivariable analysis, NYHA class IV (p=0.002), low LV ejection fraction (p=0.002), absence of beta-blocker therapy (p<0.001), impaired renal function (p=0.003), presence of an epicardial lead (p=0.025), but not diabetes (p=0.821) were associated with a poor outcome after CRT.
Conclusions:
Diabetic HF patients treated with CRT had a very favourable functional and survival outcome, which was comparable to non-diabetic patients.
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