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Medical management is the way to go for ventricular reconstruction post STICH?
Brisham Harchandani1, Alex Reyentovich
1The Leon H. Charney Division of Cardiology, New York University School of Medicine, New York, NY 10016, USA.
Insights
Neurohormonal antagonists are foundational for treating heart failure with reduced ejection fraction, improving outcomes by blocking remodeling. Surgical ventricular reconstruction showed no clinical benefit in the STICH trial.
Area of Science:
- Cardiology
- Heart Failure Research
- Medical Science
Background:
- Ventricular remodeling, a response to injury, involves cellular and systemic factors leading to left ventricular dilation and heart failure.
- Neurohormonal activation initiates remodeling, making antagonists key therapeutic agents.
- Surgical ventricular reconstruction aimed to reduce ventricular size and wall stress, but lacked clinical benefit.
Purpose of the Study:
- To review the evidence supporting neurohormonal blockade in managing heart failure with reduced ejection fraction.
- To explore the concept of "medical ventricular reconstruction" through pharmacological interventions.
Main Methods:
- Literature review and evidence synthesis.
- Analysis of clinical trial data, including the STICH trial.
- Examination of the pathophysiological mechanisms of ventricular remodeling.
Main Results:
- Neurohormonal antagonists have demonstrated efficacy in improving outcomes for heart failure with reduced ejection fraction.
- The STICH trial found no clinical benefit from surgical ventricular reconstruction in addition to coronary artery bypass surgery.
Conclusions:
- Neurohormonal blockade is a cornerstone therapy for heart failure with reduced ejection fraction.
- The concept of "medical ventricular reconstruction" highlights the potential of pharmacologic agents to modify ventricular remodeling.
- Surgical interventions like ventricular reconstruction have not proven beneficial in this patient population.
Abstract:
Ventricular remodeling is a complex process mediated by pathogenic factors all of which interact at the cellular, ventricular and systemic levels to cause progressive left ventricular dilation and subsequently a heart failure syndrome. Remodeling is a well-characterized response to insult or injury and is initiated early on by neurohormonal activation. Neurohormonal antagonists have formed the foundation of therapy to alter the progression of remodeling and concomitantly improve outcomes. Surgical ventricular reconstruction was designed as a surgical means to reduce the ventricular radius and in principal decrease ventricular wall stress as defined by the Law of Laplace. Despite optimistic initial results from case series, the Surgical Treatment for Ischemic Heart Failure Trial (STICH) trial, a large randomized trial of ventricular reconstruction in addition to coronary artery bypass surgery (CABG) therapy for management of patients with heart failure with a reduced ejection fraction showed no clinical benefit. We will summarize the evidence that demonstrates the foundational role of neurohormonal blockade in improving outcomes in patients with heart failure with a reduced ejection and the evidence behind its role in "medical ventricular reconstruction".
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