Changes in oxidative stress during outpatient surgery

Area of Science:

• Biomedical Science
• Surgical Research
• Oxidative Stress Biomarkers

Background:

• Reactive oxygen species contribute to inflammation and tissue damage.
• Ethane in exhaled breath serves as a biomarker for total body oxidative stress.
• Lipid peroxidation is a key process generating reactive oxygen species.

Purpose of the Study:

• To assess oxidative stress following minor surgeries using breath ethane.
• To evaluate the antioxidant efficacy of propofol during ischemia-reperfusion.
• To correlate oxidative stress with the duration of ischemia.

Main Methods:

• Patients undergoing laparoscopic bilateral tubal ligation (BTL) and anterior cruciate ligament (ACL) repair were studied.
• Breath ethane was measured as a biomarker of oxidative stress post-reperfusion.
• Data were analyzed using one-way analysis of variance.

Main Results:

• Breath ethane significantly increased after reperfusion in both BTL (p = 0.03) and ACL (p = 0.005) patients.
• Clinically relevant propofol concentrations did not completely inhibit the rise in oxidative stress.
• Increased oxidative stress correlated with the duration of ischemia.

Conclusions:

• Minor surgical procedures involving ischemia-reperfusion induce measurable oxidative stress.
• Propofol exhibits limited efficacy in preventing oxidative stress during mild ischemia-reperfusion.
• Breath ethane is a viable biomarker for monitoring oxidative stress in surgical contexts.