Postoperative nausea and vomiting emerge during the first 240-48 hours from surgery. Prevalence of postoperative nausea and vomiting is as high as 30% among all patients undergoing surgery, and almost 80% among the patients with high risk of postoperative vomiting. Since postoperative nausea and vomiting create very unpleasant experience and could lead to serious complications, they should be either prevented or treated. There are several perioperative factors which may initiate postoperative vomiting: opioids, inhalation anesthetics, anxiety, adverse drug effects and transporting the patient. More than one neurotransmitter system is involved in regulation of nausea and vomiting: cholinergic, dopaminergic, serotonergic, histaminergic and neurokinin system. Procedures which may decrease prevalence of postoperative vomiting are: use of local or regional anesthesia instead of general one and use of propofol for anesthesia induction (prevalence of vomiting drops for 30%). Ondansetron, dexamethasone and droperidol are equally effective: when administered prophylactically, they decrease risk of posoprative vomiting for 25%. These drugs have additive effect, since their mechanisms of action are different. The patients with extreme risk of postoperative vomiting should receive long-acting antiemetic, like transdermal scopolamine or palonosetron, or combinations of two antiemetics. If a patient who already received antiemetic prophylaxis still develops nausea and vomiting, he or she should be treated by new antiemetic having another mechanism of action.

1 Department of Pharmacology, Th e Faculty of Medical Sciences, University of Kragujevac, Serbia 2 Department of Economics, Center for Children and Childhood Studies, Rutgers University, the State University of New Jersey, U.S.A. 3 Department of Epidemiology & Community Health, School of Health Sciences & Practice, New York Medical College, U.S.A. 4 Clinic for Neurology and Psychiatry for Children and Youth, Clinical Center of Serbia, Belgrade, Serbia 5 Psychiatric Clinic, University Clinical Center Kragujevac, Serbia 6 Centre for Clinical Pharmacology, Medical Faculty, Military Medical Academy University of Defence, Belgrade Serbia 7 Faculty of Medical Sciences University of Kragujevac, Serbia 8 Primary Care Facility Svilajnac, Serbia

INTRODUCTION High prevalence of metabolic syndrome (MetS) in children and adolescents is a great concern of the modern society. OBJECTIVE bjective: Our aim was to determine the influence of previously investigated, but also and potentially novel risk factors for the development of metabolic syndrome in children and adolescents. METHODS Observational case-control clinical study was conducted involving children and adolescents with obesity/metabolic syndrome, treated on inpatient basis from January 2008 to January 2012 at the Pediatric Clinic of the Clinical Centre Kragujevac, Kragujevac, Serbia. The group of"cases"(n=28) included patients aged 10-16 years with the diagnosis of metabolic syndrome according to the International Diabetes Federation (IDF) criteria, while the control group included twice as many obese patients (n=56) matched to the compared group. RESULTS Presence of maternal gestational diabates (ORadjusted: 39.426; 95% Cl: 1.822-853.271; p=0.019), and/or lack of breastfeeding in the first six months of life (ORadjusted: 0.079; 95% CI: 0.009-0.716; p=0.024) were significant predictors for developing MetS. Also, microalbuminuria is associated with MetS in obese children and adolescants (ORadjusted: 1.686; 95% Cl: 1.188-2.393; p=0.003) CONCLUSION: Presence of maternal gestational diabetes and/or lack of infant breastfeeding are considered as relevant factors that may contribute to the increased risk of developing MetS syndrome, while microalbuminuria is frequently associated with MetS in obese children and adolescents.

Background: Dry socket is a disturbance in the healing of tooth extraction, characterized by the absence of blood clot and persistence of intense pain. The aim of this study was to determine the costs of treating dry socket, as in Serbia, until now, there has been no adequate estimation of the expenses and cost structure for treating patients with dry socket. Material and Methods: The costs of treating dry socket were analyzed on the sample of 455 adults with confirmed diagnosis of dry socket. All the patients were treated at the Oral Surgery Department, Institute of Dental Medicine in Kragujevac, during 2012. Direct costs per patient, concerning the acquisition of medicines and medical supplies, as well as medical services, were recorded in accordance with the Blue Code Book of the National Health Insurance Fund. Results: Out of total 12.652 teeth extracted, 455patients (3.6%) were diagnosed with dry socket. Total direct cost for treating dry socket in 2012 was 1.298,58 ± 468.93 RSD per patient, of which 1.065,16 RSD ± 394.49 RSD (82.02%) was the total price of the service and 1. 298,58 ± 468.93 RSD (17.98%) was spent on dental supplies. Conclusion: The actual cost of treating dry socket in Serbia shows that there is a need for the implementation of the relevant preventive measures. Global economic crisis, worsens the constant lack of available resources in dental healthcare services. Dry socket, as one of the most frequent post-extraction complications, although quite harmless in terms of clinical prognosis represents substantial economic loss for Serbia.