Systemic effects of metabolic acidosis

Area of Science:

• Physiology
• Pathophysiology
• Systemic Effects of Acid-Base Imbalance

Background:

• Metabolic acidosis is defined by reduced serum bicarbonate and blood pH.
• It has widespread implications for systemic physiology.
• Understanding these effects is crucial for clinical management.

Purpose of the Study:

• To synthesize current evidence on metabolic acidosis's physiological effects.
• To explore its impact across cardiovascular, vascular, pulmonary, gastrointestinal, endocrine, musculoskeletal, renal, and metabolic systems.
• To highlight mechanisms contributing to organ dysfunction.

Main Methods:

• Literature review of existing evidence.
• Synthesis of findings on systemic physiological effects.
• Analysis of mechanisms underlying organ dysfunction.

Main Results:

• Cardiovascular: Impaired contractility, altered ion currents, reduced beta-adrenergic response.
• Vascular: Differential vasodilation/vasoconstriction via NO and Ca2+ pathways.
• Pulmonary: Hyperventilation, Bohr effect shifts, increased pulmonary vascular resistance.
• Gastrointestinal: Increased mucus, bicarbonate secretion, and mucosal blood flow.
• Endocrine: Growth hormone resistance, altered thyroid hormone secretion, Ca2+-PO4- imbalance.
• Renal: Increased risk of stones, accelerated chronic kidney disease.

Conclusions:

• Metabolic acidosis profoundly affects multiple organ systems.
• Specific mechanisms involve ion exchange, signaling pathways, and hormonal regulation.
• Further research into these mechanisms can guide therapeutic strategies.