Antiinflammatory effect of sevoflurane in open lung surgery with one-lung ventilation
AIM
To prospectively assess the antiinflammatory effect of volatile anesthetic sevoflurane in patients undergoing open lung surgery with one lung ventilation (OLV).


METHODS
This prospective, randomized study included 40 patients undergoing thoracic surgery with OLV (NCT02188407). The patients were randomly allocated into two equal groups that received either propofol or sevoflurane. Four patients were excluded from the study because after surgery they received blood transfusion or non-steroid antiinflammatory drugs. Inflammatory mediators (interleukins 6, 8, and 10, C-reactive protein [CRP], and procalcitonin) were measured perioperatively. The infiltration of the nonoperated lung was assessed on chest x-rays and the oxygenation index was calculated. The major postoperative complications were counted.


RESULTS
Interleukin 6 levels were significantly higher in propofol than in sevoflurane group (P=0.014). Preoperative CRP levels did not differ between the groups (P=0.351) and in all patients they were lower than 20 mg/L, but postoperative CRP was significantly higher in propofol group (31±6 vs 15±7 ng/L; P=0.035); Pre- and postoperative procalcitonin was within the reference range (<0.04 µg/L) in both groups. The oxygenation index was significantly lower in propofol group (339±139 vs 465±140; P=0.021). There was no significant difference between the groups in lung infiltrates (P=0.5849). The number of postoperative adverse events was higher in propofol group, but the difference was not-significant (5 vs 1; P=0.115).


CONCLUSION
The study suggests an antiinflammatory effect of sevoflurane in patients undergoing thoracotomy with OLV.