The metabolic situation in ureterosigmoidostomy

Area of Science:

• Urology
• Nephrology
• Metabolic Medicine

Background:

• Assessing long-term acid-base and electrolyte balance in patients with ureterosigmoidostomies versus colonic conduits.
• Evaluating the necessity and efficacy of oral alkali substitution therapy.
• Identifying risk factors for metabolic complications post-urinary diversion surgery.

Observation:

• No significant metabolic alterations were observed in 67 patients with ureterosigmoidostomies compared to 39 patients with colonic conduits.
• Oral alkali substitution was necessary long-term only in patients with pre-existing upper urinary tract defects.
• Hyperchloremic acidosis episodes correlated with acute pyelonephritis and renal deterioration, often linked to inconsistent therapy.

Findings:

• Metabolic disturbances are primarily associated with compromised upper urinary tract function.
• Prompt detection and management of renal deterioration are crucial for preventing metabolic imbalances.
• Adaptation of substitution therapy can effectively manage metabolic imbalances in most cases.

Implications:

• Ureterosigmoidostomy should be avoided in patients with pre-damaged upper urinary tracts.
• Close medical supervision is essential for patients with urinary diversion, particularly those with renal compromise.
• Timely intervention can mitigate risks of metabolic acidosis and renal decline in these patients.