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Published on: October 3, 2019
Pharmacologic therapy of chronic heart failure
Eman Hamad1, Paul J Mather, Siva Srinivasan
1Jefferson Medical College of Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
Abstract:
Over the past 2 decades, investigators have learned more about the pathophysiologic changes that occur in systolic and diastolic dysfunction. Ironically, in some cases, the biologic pathways that have protected the heart during acute dysfunction are the same pathways that cause progressive deleterious effects with chronic activation. In particular, it is the activation of the neurohormonal system that has a significant impact on disease progression. As a result, the neurohormonal system has provided a key target for pharmacologic therapy in patients with heart failure secondary to systolic dysfunction. These targets include the renin-angiotensin-aldosterone system as well as the sympathetic nervous system. Neurohormonal manipulation, however, is often ineffective in the pharmacologic therapy of patients with endstage heart failure, therefore other treatment strategies - including the use of inotropic agents to improve pump function and diuretics to control fluid balance are needed.
Insights
Understanding heart failure progression reveals that neurohormonal system activation, while protective acutely, causes chronic damage. Targeting this system is key, but other treatments are vital for advanced heart failure.
Area of Science:
- Cardiology
- Pathophysiology
- Pharmacology
Background:
- Investigated pathophysiologic changes in systolic and diastolic dysfunction over 20 years.
- Identified chronic activation of protective biologic pathways contributing to progressive heart damage.
- Highlighted the significant impact of neurohormonal system activation on disease progression.
Purpose of the Study:
- To explore the role of the neurohormonal system in heart failure progression.
- To identify key targets for pharmacologic therapy in systolic dysfunction.
- To discuss limitations of neurohormonal manipulation in end-stage heart failure.
Main Methods:
- Review of pathophysiologic changes in heart failure.
- Analysis of neurohormonal system activation pathways.
- Evaluation of pharmacologic therapies for heart failure.
Main Results:
- Chronic activation of neurohormonal pathways leads to deleterious effects.
- The renin-angiotensin-aldosterone system and sympathetic nervous system are key targets.
- Neurohormonal manipulation shows limited efficacy in end-stage heart failure.
Conclusions:
- Pharmacologic therapy targeting the neurohormonal system is crucial for systolic dysfunction.
- Alternative strategies are necessary for end-stage heart failure.
- Inotropic agents and diuretics are important for managing pump function and fluid balance.
Related Concept Videos
Heart Failure V: Medical Management
Heart Failure Drugs: Inhibitors of Renin-Angiotensin System
Heart Failure VI: Adjunct Therapies
Heart Failure Drugs: β-Blockers
Heart Failure Drugs: Diuretics
Heart Failure Drugs: Inotropic Agents
