Serum Chloride and Heart Failure

Area of Science:

• Cardiology
• Electrolyte Physiology
• Heart Failure Pathophysiology

Background:

• Heart failure (HF) remains a major public health concern with high prevalence and mortality.
• Traditionally, serum sodium has been the focus for electrolyte imbalances in HF.
• Emerging evidence suggests serum chloride plays a critical role in HF progression.

Purpose of the Study:

• To review the current understanding of chloride's role in heart failure.
• To examine basic science, translational, and clinical evidence linking chloride to HF outcomes.
• To discuss potential therapeutic strategies targeting chloride homeostasis in HF.

Main Methods:

• Comprehensive literature review of basic science, translational research, and clinical studies.
• Analysis of existing data on serum chloride levels and their association with HF pathophysiology and prognosis.
• Exploration of potential mechanisms by which chloride influences HF.

Main Results:

• Hypochloremia is associated with increased neurohumoral activation in HF patients.
• Low serum chloride levels correlate with resistance to diuretic therapy.
• Hypochloremia is a significant predictor of poor prognosis in heart failure.

Conclusions:

• Chloride is a critical electrolyte in heart failure, with hypochloremia indicating worse outcomes.
• Understanding chloride homeostasis is essential for managing heart failure.
• Targeting chloride balance may offer novel therapeutic avenues for heart failure treatment.