• G M Koksal, C Sayilgan, G Gungor, H Oz, O Sen, H Uzun, and S Aydin.
• Department of Anaesthesiology and Reanimation, Istanbul University Cerrahpasa Medical Faculty, Istanbul, Turkey. gunizkoksalhotmail.com
• Acta Anaesthesiol Scand. 2005 Jul 1;49(6):835-9.

BackgroundThis study was devised to compare the effects of sevoflurane and desflurane anaesthesia on the cytokine response.MethodsSixty ASA I-II patients, scheduled for tympanoplasty, were randomly allocated to be anaesthetized with either sevoflurane or desflurane at maintenance inspiratory concentrations of 1-1.5 MAC of either agent. Blood samples were taken for plasma tumour necrosis factor alpha (TNFalpha), interleukin 1beta and interleukin-6 assay before induction of anaesthesia, before surgery, and at the end of surgery. Alveolar cells were obtained after induction of anaesthesia and at the end of surgery.ResultsPlasma TNFalpha was greater with desflurane than sevoflurane both before surgery (45.1 +/- 3.5 pg ml(-1) for desflurane vs. 23.2 +/- 2.5 pg ml(-1) for sevoflurane, P < 0.01) and (62.0 +/- 5.3 pg ml(-1) vs. 35.5 +/- 4.6 pg ml(-1), P < 0.001). Interleukin 1beta was similarly greater with desflurane than sevoflurane before (39.3 +/- 4.0 pg ml(-1) vs. 17.4 +/- 3.0 pg ml(-1); P < 0.01) and after surgery (46.0 +/- 3.4 pg ml(-1) vs. 23.3 +/- 3.2 pg ml(-1), P < 0.001). There were similar results for interleukin 6 before (42.3 +/- 3.5 pg mls(-1). 29.0 +/- 2.6 pg ml(-1), P < 0.001) and after surgery (86.0 +/- 4.5 pg ml(-1) vs. 45.9 +/- 6.3 pg ml(-1), P < 0.001). Alveolar cell TNFalpha concentrations after surgery were also greater with desflurane than sevoflurane (96.3 +/- 12.4 pg ml(-1) vs. 64.8 +/- 10.1 pg ml(-1), P < 0.001), as were interleukin 1beta (75.4 +/- 6.2 pg ml(-1) vs. 32.0 +/- 8.3 pg ml(-1), P < 0.001) and interleukin 6 concentrations (540.1 +/- 65.3 pg ml(-1) vs. 363.6 +/- 29.2 pg ml(-1), P < 0.001).ConclusionDesflurane appears to cause a greater systemic and intrapulmonary pro-inflammatory response than sevoflurane during anaesthesia for ear surgery.

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