Severe Acidosis Development

Pathologic Mechanisms

Lactic acidosis from tissue hypoperfusion in shock states produces massive acid loads that exceed renal excretory capacity, with lactate levels indicating tissue hypoxia and correlating with mortality 1, 2
Septic shock exhibits complex metabolic acidosis with multiple simultaneous contributors including lactic acidosis, hyperchloremic acidosis, and increased strong ion gap 1
Diabetic ketoacidosis generates large quantities of ketoacids that rapidly accumulate 2
Renal failure impairs acid excretion, allowing progressive accumulation of fixed acids 2
Respiratory compensation may be impaired in severe shock, leading to respiratory acidosis that compounds metabolic acidosis 1

Severe acidosis (base deficit >15 mmol/L) is common in shock states, with approximately 25% of cases presenting with hypotension 3, 4, 5
The mortality associated with severe acidosis reflects the underlying critical illness generating the acid load rather than the pH disturbance alone 1

High animal protein intake with low fruit/vegetable consumption produces net endogenous acid production through metabolism of sulfur-containing amino acids 6
This creates chronic low-grade metabolic acidosis that worsens with age as kidney function declines 6
Less than 20% of US adults consume adequate fruits and vegetables to provide sufficient alkali buffering 6