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Neurohumoral activation in congestive heart failure: a double-edged sword?

D L Mann1, G Cooper

  • 1Department of Medicine, Gazes Cardiac Research Institute Medical University of South Carolina, Charleston.

Clinical Cardiology
|September 1, 1989
PubMed

Insights

Excessive adrenergic stimulation initially aids failing hearts but can worsen function over time. This review suggests it plays a key role in congestive heart failure development.

Area of Science:

  • Cardiology
  • Pathophysiology
  • Pharmacology

Background:

  • Congestive heart failure involves progressive left ventricular dysfunction.
  • The exact mechanisms driving this deterioration remain incompletely understood.
  • A single cause for congestive heart failure is unlikely due to its complexity.

Purpose of the Study:

  • To review evidence on the dual role of adrenergic stimulation in heart failure.
  • To explore how excessive adrenergic signaling impacts myocardial function.

Main Methods:

  • Review of recent experimental data.
  • Analysis of clinical evidence.

Main Results:

  • Adrenergic stimulation can initially support failing myocardium.
  • Prolonged excessive adrenergic stimulation may cause myopathic effects.
  • This can lead to worsening left ventricular function and intractable heart failure.

Conclusions:

  • Excessive adrenergic stimulation appears to be a double-edged sword in heart failure.
  • While not the sole cause, it may play a primary role in the pathogenesis of congestive heart failure.

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