• Gokcen Duymaz, Tuncay Ozgur, Kara Ali Giray AG Department of Anesthesiology and Reanimation, University of Health Sciences, Istanbul Training & Research Hospital, Istanbul, Turkey., and Veysel Erden.
• Department of Anesthesiology and Reanimation, University of Health Sciences, Kartal Dr. Lutfi Kirdar City Hospital, Istanbul, Turkey.
• Int. J. Clin. Pract. 2021 Jun 1; 75 (6): e14149.

AimThe study aimed to investigate the effect of varying testosterone levels in the morning and evening on the depth of anaesthesia in patients who underwent a septoplasty.Materials And MethodsMale patients who underwent septoplasty under general anaesthesia between September 2016 and September 2017 were included in the study. The patients were divided into two groups. The first group consisted of patients who were operated on in the morning hours (between 8.00 and 10.00) when the testosterone level was the highest and the second group consisted of patients who had the lowest testosterone level in the afternoon (between 14.00 and 16.00). Blood was taken from the brachial vein to measure the testosterone level of the patients and blood testosterone levels were measured by mass spectrometry before the induction of anaesthesia.ResultsSixty patients were included in the study. The mean age of the patients was 33.77 ± 10.98 years. The rocuronium and propofol doses used in the morning group were significantly higher (P = .012 for propofol, P = .002 for rocuronium, P < .001 for rocuronium dose) (Table 2). Additionally, the time to reach saturation of sevoflurane doses in expirium and inspiration was later in the morning group (morning group at 15th minute, evening group at 10th minute).ConclusionsSedation anaesthesia applied in patients who underwent septoplasty operation was associated with testosterone level and it was more difficult for patients to switch to sedation with increased testosterone level.© 2021 John Wiley & Sons Ltd.

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