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Introduction and Objectives: There are a few reports in the literature about the successful use of sugammadex in the treatment of hypersensitivity reactions caused by rocuronium; however, the pathophysiological mechanism is still unknown. This study aims to investigate the changes caused by rocuronium in the lung and the effect of sugammadex on these changes with biochemical, light microscopic and immunohistochemical parameters on a rat model., Materials and Methods: For the study, 28-male Sprague-Dawley rats were randomly divided, seven of each, into four groups. Group C (control) received only 0. 9 % NaCl without any drug. Group R received rocuronium alone 1mg/kg. Group S received sugammadex alone 96 mg/kg. Group RS received rocuronium 1mg/kg and sugammadex 96 mg/kg. After 24 h later, the animals were sacrificed and their tissues were removed. Biochemical (IgE/CRP), light microscopic and immunohistochemical findings were recorded., Results: Immunoglobulin E and CRP levels, peribronchial, alveolar septal lymphocytic infiltration, thickening of the alveolar membranes and bleeding sites in Group R were significantly higher than all the other groups. In Group RS, while these parameters were significantly lower than that of Group R and Group S, it was significantly higher than that of Group C. Total mast cells and tryptase-positive mast cells counts were significantly higher in Group R than in all other groups. In Group RS, these parameters were statistically lower than that of Group R and Group S, but higher than that of Group C., Conclusions: This study shows that allergic inflammatory changes due to rocuronium in the lungs of rats are reduced with sugammadex. These results support cases of anaphylaxis due to rocuronium which improved with sugammadex.

Objective: Anesthesia induction is usually achieved with sevoflurane for pediatric patients without vascular access. The aim of this study was to investigate the optimum intravenous access time and to evaluate the corresponding bispectral index (BIS) value in pediatric patients after sevoflurane induction., Method: This prospective study included 100 children enrolled between January 1, 2017 and January 1, 2018 at Istanbul Medeniyet University Goztepe Training and Research Hospital. Anesthesia was induced with 8% sevoflurane and oxygen. Measurements included mask adaptation time, time to loss of the ciliary reflex, time to recovery of regular breathing, and optimal timing of intravenous access time with the corresponding BIS values, as well as the time elapsed for the BIS value to fall below 60., Results: The mean mask adaptation time was 27.8±28.4 s, time to loss of the ciliary reflex was 39.7±10.3 s, and time to reach regular respiration was 88.5±116.9 s, with mean BIS value of 80.4±16.9, 70.2±10.4, and 52.4±12.1, respectively. The mean time for BIS to fall below 60 was 72.54±24.41 s. The mean time required for the the iniation of optimal intravenous access was 104.92±36.45 s, with a mean BIS value of 30±10.1., Conclusion: Following anesthesia induction with sevoflurane in children, the BIS value below 60 which is the upper limit for surgical anesthesia, was found to be insufficient for intravenous intervention. For pediatric patients undergoing sevoflurane induction it has been concluded that, the BIS value below 30 or an average waiting time of 104.9 s is ideal for initiation of optimal intravenous access., Competing Interests: Conflict of interest: The authors declare that they have no conflict of interest., (Copyright Istanbul Medeniyet University Faculty of Medicine.)

Objective: Methylene tetrahydrofolate reductase (MTHFR) deficiency is an autosomal recessive disorder that results in increased homocysteine levels in the body. Hyperhomocysteinemia causes a predisposition to venous and arterial thrombosis and ischaemic insults. The incidence of the deficiency is around 40% in some countries. In this study, we aimed to evaluate the effects of anaesthetic agents in children with MTHFR deficiency., Methods: Twelve paediatric patients with an MTHFR enzyme deficiency who underwent surgery in a ten-month period in a single centre were retrospectively evaluated. Demographic data, homocysteine levels before and after surgery, anaesthesia management and postoperative complications were recorded., Results: In four patients, propofol was used both for anaesthesia induction and total intravenous anaesthesia (TIVA). Eight patients received sevoflurane for both induction and maintenance of anaesthesia. Nitrous oxide (N 2 O) was not used in any patients. There was not a significant difference between the preoperative and postoperative homocysteine levels (p>0.05). Twenty-four hours after the surgery, the homocysteine levels were within normal limits. No complications were observed., Conclusion: Sevoflurane and propofol have no deleterious effects on homocysteine levels in patients with MTHFR deficiency. Avoidance of N 2 O is the key point for anaesthetic consideration regarding these patients., Competing Interests: Conflict of Interest: No conflict of interest was declared by the authors.

Background: Epidural anesthesia is one of the best options for lower abdominal and lower limb surgery. However, there have been insufficient reports regarding the use of epidural anesthesia for pilonidal sinus surgery. The present study was performed to compare the clinical profiles of epidural block performed with 0.75% levobupivacaine and 0.75% ropivacaine in this procedure., Methods: Thirty patients undergoing pilonidal sinus surgery were randomly allocated into two groups: one group received levobupivacaine and the other received ropivacaine at 0.75% in a volume of 10 ml. Arterial blood pressure, heart rate, oxygen saturation, the onset time of analgesia and duration of block, highest sensory block level, perioperative and postoperative side effects, and patients' and surgeons' satisfaction were recorded., Results: Hemodynamic stability was maintained in both groups throughout surgery. The onset time of analgesia (the time from epidural injection of local anesthetic to reach L2 sensorial block) was 6.26 ± 3.49 min in the levobupivacaine group and 4.06 ± 1.75 min in the ropivacaine group (P = 0.116). The duration of sensorial block (time for regression of sensory block to L2) was 297.73 ± 70.94 min in group L and 332.40 ± 102.22 min in group R (P = 0.110). Motor block was not seen in any of the patients in the study groups. Patients' and surgeons' satisfaction with the anesthetic technique were mostly excellent in both groups., Conclusions: In patients undergoing pilonidal sinus surgery, both levobupivacaine and ropivacaine produce rapid and excellent epidural block without leading to motor block or significant side effects. Although not statistically significant, the onset time of anesthesia was shorter and the duration of effect was longer with ropivacaine than with levobupivacaine in this study.

Background: The aim of the study was to evaluate the comparative effects of propofol infusion versus sevoflurane for maintenance of anesthesia with respect to hemodynamics, recovery characteristics, nausea and vomiting in patients undergoing percutaneous nephrolithotomy., Methods: Forty American Society of Anesthesiologists physical status I-II patients, aged between 22 and 65 years were randomly divided to receive either intravenous anesthesia with propofol (group P) or sevoflurane (group S). Cardiovascular variables, peripheral oxygen saturation (SpO2), end-tidal carbon dioxide (ETCO2), bispectral index (BIS) and train-of-four (TOF) values were recorded at intervals throughout the procedure. Time to spontaneous respiration, eye opening, extubation, obey commands, hand squeezing, Aldrete Score > 9 and the incidence of postoperative nausea and vomiting were recorded., Results: Early recovery times [spontaneous respiration (P = 0.002), eye opening (P = 0.006), extubation (P = 0.013), obey commands (P < 0.05), hand squeezing (P = 0.005)] were significantly longer in group P. The incidence of vomiting was significantly higher in group S (P < 0.05). Hemodynamic parameters, levels of SpO2, ETCO2, and BIS and TOF values were not significantly different between the groups (P > 0.05)., Conclusions: The present study which adjusted sevoflurane concentration and propofol infusion rate according to BIS values revealed that maintenance of anesthesia with sevoflurane is associated with faster recovery than anesthesia with propofol. Propofol resulted in a significantly lower incidence of postoperative nausea and vomiting. Hemodynamic parameters and levels of SpO2 and ETCO2 were comparable between the groups during percutaneous nephrolithotomy.