Zinc metabolism and surgical trauma

Area of Science:

• Surgical research
• Nutritional science
• Wound healing studies

Background:

• Zinc deficiency is known to impair wound healing in surgical and chronic wounds.
• Surgical trauma causes a significant reduction in serum zinc concentration.
• The role of increased urinary zinc excretion in this postoperative decrease remains unclear.

Purpose of the Study:

• To investigate the relationship between postoperative urinary zinc excretion and the decline in serum zinc levels.
• To assess the impact of surgical trauma on zinc metabolism.
• To identify potential interventions for mitigating zinc-related complications in surgical patients.

Main Methods:

• Studied 38 patients undergoing surgery.
• Monitored serum zinc concentrations pre- and postoperatively.
• Measured urinary zinc excretion in the postoperative period.

Main Results:

• A correlation between urinary zinc excretion and the fall in serum zinc postoperatively was observed.
• Older patients exhibited lower preoperative serum zinc concentrations.
• Surgical trauma appears to influence zinc homeostasis, potentially through urinary losses.

Conclusions:

• Postoperative urinary zinc excretion is linked to the decrease in serum zinc levels.
• Older surgical patients may be at higher risk of preoperative zinc deficiency.
• Preoperative zinc supplementation is recommended for older patients to potentially improve surgical outcomes.