Browsing by Author "Kalezić, Nevena (6602526969)"

Introduction/Objective Alcohol abuse influence on developing thyroid cancer is controversial. While some studies consider it a protective factor, others deny any impact on thyroid cancer. The objective of the paper was to establish a possible link between alcohol abuse and certain types of thyroid cancers. Methods The retrospective study included 502 patients with thyroid cancer and a control group of 600 patients with benign forms of thyroid diseases (e.g. nodular, multinodular, and toxic nodular goiter). Thyroid cancer patients were divided into four groups: I – papillary, II – medullary, III – anaplastic, and IV – follicular carcinoma, and grouped by sex, age (< 30 years; > 30 years) and alcohol abuse, as defined by the World Health Organization. Results Thyroid cancer patients were predominantly male of younger age. This distribution difference was statistically significant in groups I and II (p < 0.001). Of total 10 (0.9%) patients with chronic alcohol abuse, eight (1.6%) had thyroid cancer, while two (0.3%) belonged to the control group (p < 0.001). In thyroid cancer patients, chronic alcohol abuse was absent from groups III and IV. Distribution in groups I and II was six (1.6%) and two (2%), respectively (p < 0.001). Conclusion Alcohol abuse deserves to be considered as a risk factor for papillary and medullary forms of thyroid cancer, while it does not stay the same for anaplastic and follicular thyroid cancers. © 2021, Serbia Medical Society. All rights reserved.

Primary aldosteronism (PA) is associated with increased prevalence of metabolic disorders (impaired glucose and lipid metabolism and insulin resistance), but also with more frequent cardiovascular, renal and central nervous system complications. Biochemical and clinical parameters were retrospectively analysed for 40 patients with PA caused by aldosterone-producing adenoma (APA) and compared to the control groups of 40 patients with nonfunctioning adrenal adenoma (NFA) and essential hypertension (HT), and 20 patients with adrenal Cushing syndrome (CS) or subclinical CS (SCS). Systolic, diastolic and mean arterial blood pressures were significantly higher in the PA group (p=0.004; p=0.002; p=0.001, respectively) than in NFA+HT group. PA patients had longer hypertension history (p=0.001) than patients with hypercorticism and all had hypokalaemia. This group showed the smallest mean tumour diameter (p<0.001). The metabolic syndrome was significantly less common in the PA group (37.5% vs. 70% in CS+SCS and 65% in NFA+HT group; p=0.015), although there was no significant difference in any of the analysed metabolic parameters between groups. PA group was found to have the most patients with glucose intolerance (81.8%), although the difference was not significant. The mean BMI for all three groups was in the overweight range. Patients with PA had higher microalbuminuria and a higher tendency for cardiovascular, renal and cerebrovascular events, but the difference was not significant. Our results support the importance of the early recognition of primary aldosteronism on the bases of clinical presentation, as well as an increased screening intensity. © 2019 © 2019.

Primary aldosteronism (PA) is associated with increased prevalence of metabolic disorders (impaired glucose and lipid metabolism and insulin resistance), but also with more frequent cardiovascular, renal and central nervous system complications. Biochemical and clinical parameters were retrospectively analysed for 40 patients with PA caused by aldosterone-producing adenoma (APA) and compared to the control groups of 40 patients with nonfunctioning adrenal adenoma (NFA) and essential hypertension (HT), and 20 patients with adrenal Cushing syndrome (CS) or subclinical CS (SCS). Systolic, diastolic and mean arterial blood pressures were significantly higher in the PA group (p=0.004; p=0.002; p=0.001, respectively) than in NFA+HT group. PA patients had longer hypertension history (p=0.001) than patients with hypercorticism and all had hypokalaemia. This group showed the smallest mean tumour diameter (p<0.001). The metabolic syndrome was significantly less common in the PA group (37.5% vs. 70% in CS+SCS and 65% in NFA+HT group; p=0.015), although there was no significant difference in any of the analysed metabolic parameters between groups. PA group was found to have the most patients with glucose intolerance (81.8%), although the difference was not significant. The mean BMI for all three groups was in the overweight range. Patients with PA had higher microalbuminuria and a higher tendency for cardiovascular, renal and cerebrovascular events, but the difference was not significant. Our results support the importance of the early recognition of primary aldosteronism on the bases of clinical presentation, as well as an increased screening intensity. © 2019 © 2019.

The occurrence of cardiac arrest during anesthesia and surgery is nowadays associated with many challenges imposed by 21st century medicine. On the one hand, good education of healthcare practitioners, sophisticated anesthetic techniques and equipment, along with safer anesthetics and improved surgical techniques have significantly reduced the risk of cardiac arrest during the perioperative period. Still, the introduction of new, invasive diagnostic and therapeutic procedures in the aging patients and those with comorbidities carries along new risk and challenges. Epidemiological data indicate that intraoperative cardiac arrest is an extremely rare event. Due to variety of moral and ethical prejudices, intraoperative cardiac arrest is frequently presented as if it has happened in the immediate postoperative period, following surgery and anesthesia. The preventive measures, the etiology and diagnosis of cardiac arrest, as well as the specificities regarding organization and performance of cardiopulmonary resuscitation in the operating room, result in a better prognosis compared to other hospital departments. The article also describes the specifics of cardiopulmonary resuscitation in the catheterization laboratory, while a separate section is dedicated to cardiopulmonary resuscitation following systemic toxicity of local anesthetics. Since intraoperative cardiac arrest and death represent very rare complications, European Resuscitation Council has only recently published Guidelines for Resuscitation for performing cardiopulmonary resuscitation in the operating room - in 2015. © 2018, Serbia Medical Society. All rights reserved.

Preoperative preparation of the patients with adrenal cortex dysfunction is based on the careful preoperative evaluation of the type and the severity of the disturbance. The dysfunction involving adrenal glands may be: insufficiency (severe, mild, expressed) and hyperfunction (hypercorticism and/or hyperaldosteronism). If we speak about the patients with limited adrenal reserve (Addison's disease, therapeutic glucocorticoid application etc.) they need necessary corticosteroid supplementation, during preoperative preparation, as well as, during complete perioperative period. Doses needed for the substitution are adjusted according to the severity of adrenal insufficiency and according to the extent of the planned surgical procedure. Patients with Cushing's syndrome (or other form of hypercorticism), as well as, patients with Conn's syndrome (or other forms of hyperaldosteronism), do have numerous organ dysfunctions, that are significant in preoperative preparation, anesthesia and for the outcome of the surgical treatment. Common feature for both of the above syndromes is hydroelectrolyte disbalance, with hypokalemia, metabolic alkalosis and hypertension. Disturbances related to the adrenal cortex hyperfunction must be corrected preoperatively, in order to avoid complications. When we speak about hypokalemia it must be promptly corrected even before urgent/vital surgical procedure because it may cause severe intraoperative cardiac arrhythmia.

Introduction Postoperative nausea and vomiting (PONV) is one of the most common postoperative complications. The incidence in adult population is 20-30%, and it can be up to 80% in high-risk population such as gynecological and laparoscopic surgeries. The objective of this study is to compare the efficiency of the combination therapy in comparison with monotherapy in the prevention of PONV in gynecological and laparoscopic surgeries. Methods An observational prospective cohort study was conducted on a sample of 64 patients (32 patients per group) treated postoperatively at the Gynecology and Obstetrics Ward of GH Subotica, in the period from January-March 2017. The anesthesiologist in charge administered the combination of dexasone and metoclopramide or granisetron in monotherapy according to protocol to patients for prevention of PONV. Results The demographic characteristics of patients are homogenous and show a statistically significant difference only in the characteristics of length of smoker status and maximum intra-abdominal pressure during surgery. The total incidence of postoperative nausea in the fifth, 15th and 60th minute was 15.6%, 17.2% and 18.7% respectively, and in the fourth, eighth, 12th, and 24th postoperative hour it was 12.5%, 7.8%, 10.9%, and 6.2%, respectively. The incidence of postoperative vomiting in the fifth, 15th, and 60th minute was 1.6%, 4.7%, and 4.7%, respectively, and in the fourth, eighth, 12th, and 24th postoperative hour it was 1.6%, 3.2%, 1.6%, and 1.6%, respectively. Conclusion The study proved that the combination effect of dexasone and metoclopramide is not inferior compared to monotherapy with granisetron. © 2019, Serbia Medical Society. All rights reserved.

Background: The objective of our study was to determine the serum concentrations of protein S100B and neuron specific enolase (NSE) as well as their ability and accuracy in the prediction of early neurological outcome after a traumatic brain injury. Methods: A total of 130 polytraumatized patients with the associated traumatic brain injuries were included in this prospective cohort study. Serum protein S100B and NSE levels were measured at 6, 24, 48 and 72 hours after the injury. Early neurological outcome was scored by Glasgow Outcome Scale (GOS) on day 14 after the brain injury. Results: The protein S100B concentrations were maximal at 6 hours after the injury, which was followed by an abrupt fall, and subsequently slower release in the following two days with continual and significantly increased values (p<0.0001) in patients with poor outcome. Secondary increase in protein S100B at 72 hours was recorded in patients with lethal outcome (GOS 1). Dynamics of NSE changes was characterized by a secondary increase in concentrations at 72 hours after the injury in patients with poor outcome. Conclusion: Both markers have good predictive ability for poor neurological outcome, although NSE provides better discriminative potential at 72 hours after the brain injury, while protein S100B has better discriminative potential for mortality prediction. © by Branislava Stefanović 2017.

Background: The objective of our study was to determine the serum concentrations of protein S100B and neuron specific enolase (NSE) as well as their ability and accuracy in the prediction of early neurological outcome after a traumatic brain injury. Methods: A total of 130 polytraumatized patients with the associated traumatic brain injuries were included in this prospective cohort study. Serum protein S100B and NSE levels were measured at 6, 24, 48 and 72 hours after the injury. Early neurological outcome was scored by Glasgow Outcome Scale (GOS) on day 14 after the brain injury. Results: The protein S100B concentrations were maximal at 6 hours after the injury, which was followed by an abrupt fall, and subsequently slower release in the following two days with continual and significantly increased values (p<0.0001) in patients with poor outcome. Secondary increase in protein S100B at 72 hours was recorded in patients with lethal outcome (GOS 1). Dynamics of NSE changes was characterized by a secondary increase in concentrations at 72 hours after the injury in patients with poor outcome. Conclusion: Both markers have good predictive ability for poor neurological outcome, although NSE provides better discriminative potential at 72 hours after the brain injury, while protein S100B has better discriminative potential for mortality prediction. © by Branislava Stefanović 2017.

The hyomental distance ratio (HMDR) is the ratio between the hyomental distance (HMD) (the distance between the hyoid bone and the tip of the chin) at the extreme of head extension (HMDe) and the one in the neutral position (HMDn). The objective of the study was to examine the predictive value, sensitivity, and specificity of HMDe, HMDn, and HMDR in predicting difficult endotracheal intubation (DI). A prospec-tive study included 262 patients that underwent elective surgical operations. The following parameters were observed as possible predictors of DI: HMDR, HMDe, HMDn, Mallampati score, and body mass index (BMI). The cut-off points for the DI predictors were HMDe <5.3 cm, HMDn ≤5.5 cm, and HMDR ≤1.2. The assessment that DI existed was made by the anesthesiologist while performing laryngoscopy by applying the Cormack-Lehane classification. DI was present in 13 patients (5%). No significant difference was observed in the frequency of DI with regard to the sex, age, and BMI of the patients. Our research indicated HMDR as the best predictor of DI with a sensitivity of 95.6% and specificity of 69.2%. HMDR can be used in the everyday work of anesthesiologists because HMDR values ≤1.2 may reliably predict DI. © 2016 ABMSFBIH.

The aim of our study was to investigate the expression of γ-catenin in normal kidney and in Wilms' tumor by immunohistochemistry and to correlate the results with tumor stage, histological type, and prognostic group. We investigated 28 cases of Wilms' tumor, 2 Wilms' tumor metastases in lungs, and 1 specimen of normal renal tissue. Expression of γ-catenin was detected in 14 cases. There was a weak inverse relationship between γ-catenin expression and tumor stage. Expression of γ-catenin was detected in various histologic types of Wilms' tumor, but there was no statistically significant correlation, except in cases with diffuse anaplasia that were negative. In 2 metastatic cases and in the case of bilateral Wilms' tumor γ-catenin immunostaining was not observed Our findings suggest an absence of strong correlation between the loss of γ-catenin and unfavorable outcome. Copyright © Informa Healthcare USA, Inc.

Background/Aim. The most effective method for human adult pancreatic islets purification is density-gradient centrifugation. The aim of this study was to analyze the effects of non-automated purification on preservation of functional capacity of human adult pancreatic islet cells. Methods. Human pancreata were obtained after pancreatectomy in the patients with chronic pancreatitis or benign tumors. Pancreatic islets were purified by non-automated method in discontinuous Ficoll density gradient. The samples were divided in 2 fractions: purified (P) and non-purified (NP) cultures. Islets were stained with diphenyl-thiocarbazone. The efficiency of separation was determined by comparing percentage of stained cells in P and NP cultures on day 1, 3 and 7 of shortterm cultivation. Glucose-stimulated insulin secretion was expressed as stimulation index (SI). Results. The results obtained showed a statistically significant difference (p < 0.01) between P and NP cultures. P cultures had higher percentages of stained cells (70.43 ± 3.97%, 73.77 ± 4.22% and 71.34 ± 4.69% on the first, third and seventh day of cultivation, respectively) than NP cultures (53.68 ± 1.71%, 57.14 ± 3.94% and 43.97 ± 4.56%, respectively). P cultures had higher values of SI for the first, third and seventh day of cultivation than NP cultures (0.45 ± 0.08, 0.80 ± 0.21, 1.28 ± 0.15 and 0.46 ± 0.10, 0.752 ± .0.16, 0.76 ± 0.11 for P and NP cultures respectively). The difference was statistically significant on day seven (p = 0.01). Conclusion. Although during purification process islets were exposed to a number of insults that might result in cellular damage and functional impairment, our assessments showed that islets in P cultures preserved their functional capacity better than islets in NP cultures, since they had greater insulin secretion.

Difficult tracheal intubation (DI) is more common in thyroid than in other surgical branches due to thyromegaly. Proper preoperative airway evaluation is necessary in order to reduce the potential numerous complications. The study examined the incidence of DI in thyroid surgery and the influence of tracheal dislocation and other risk factors on DI. A prospective study was conducted on 2379 patients who underwent thyroidectomy at the Center for Endocrine Surgery, Clinical Center of Serbia, from 2007 to 2012. Patients were divided into groups with (n=162) and without DI (n=2217). Besides tracheal dislocation, another 13 risk factors contained in 13 screening tests and three additional factors of gender, age and diagnosis were defined. The incidence of DI in our study was 6.81%. The presence of tracheal dislocation was statistically significant, but not an independent predictor of DI. The diagnosis, large circumference and small neck length, previous DI, recessive mandible, tooth characteristics and oral anomalies were the most significant and independent predictors of DI. Neck circumference and small neck length had highest sensitivity. Previous DI had highest specificity. Thyromegaly, if causing tracheal dislocation and/or stenosis, represents a significant DI predictor, not individually, but in combination with other factors.

Intraoperative hypertension (IOHTA) during neck surgery is undesirable because this type of surgery has a propensity to bleed profoundly even in normotensive anesthesia. The purpose of our study was to detect predictors of IOHTA in patients undergoing neck surgery. This single center retrospective study included 880 adult patients who underwent neck surgery under general anesthesia. The impact of gender, age, comorbidity, difficult tracheal intubation, anesthesia duration, and induced hypotension on IOHTA was studied. IOHTA was present in 57 (6.7%) patients. The highest incidence of IOHTA was recorded in patients with ASA 4 status and those with Cormack-Lehane grade 4,: (22.2% and 21.4%, respectively). Significantly more patients with hypertension, hyperlipoproteinemia and ventricular extrasystoles had IOHTA compared with patients without these comorbidities. Statistically significant predictors of IOHTA were age (OR 1.438; 95% CI 1.144-1.808; p=0.002), cardiac arrhythmia (OR 1.702; 95% CI 1.129-2.566; p=0.011), Cormack-Lehane grade (OR 1.407; 95% CI 1.054-1.878; p=0.020), and duration of anesthesia (OR 1.005; 95% CI 1.001-1.008; p=0.005). The risk of IOHTA occurrence was lower in patients with induced hypotension (OR 0.024; 95% CI 0.003-0.185; p=0.000). During neck surgery, special attention is needed in patients of older age, those with cardiac arrhythmia, difficult intubation, and longer anesthesia duration because they are at risk of IOHTA. © 2023, Dr. Mladen Stojanovic University Hospital. All rights reserved.

Ageing of populataion world wide has significant contribution as one of the major risk factor for neurodegenerative disorders. The patients with neurodegenerative as well as other neuological diseases presented the population with possible great need either of small or big surgical intervention. There are several important issues in patients with neurological diseases: the nature, disease duration, therapy, the patient's ability to live without assistance. Neurological disease may become worst by general and regional anesthesia. Stopping therapy may lead to worsening of neurological diseases. One of the main common threat is the risk of significant cardiorespiratory complications, which is important in assessing operational risk, in preoperative preparation and in terms of postoperative recovery and outcomes of surgical treatment. This has resulted in greater preoperative care by detailed patient history evaluation and examination, patient information and informed consent. Besides the effect of the anaesthetic technique upon the course of the disease, there is also the interaction of drugs administered during anaesthesia and patient medication. Several undiagnosed diseases may be disclosed following a surgical/anaesthetic intervention.

Proper diagnosis of psychoactive substance abuse and addiction, as well as acute intoxication, withdrawal syndrome and overdosing are of great importance in patients who are preparing for surgical intervention. There are some specific details in their preoperative preparation whether they underwent emergency or elective surgery. Good knowledge of the characteristics of psychoactive substance abuse and addiction, interaction of psychoactive substances and anesthetics and any other drugs that could be used in the perioperative period is important especially for anastesiologist. In this work we present key issues for recognizing theese patients as well as some guidelines for adequate preoperative preparation and postoperative care.

The goal of this article is to present the importance of diabetes mellitus as comorbidity in patients submitting to different surgical procedures. The results of numerous studies that have been presented here showed worst surgical outcome in patients with bad diabetes control. This review considers the elements for preoperative evaluation and preparation of these patients (former therapy, longterm metabolic control, micro and macrovascular complications etc). According to existing data, the goals for preoperative preparation and the regimes for their achievement have been defined. Also, the regimes for blood glucose controle during intraoperative and postoperative period have been evaluated in this article.

Arterial hypertension is not an independent risk factor in cardiovascular complications in noncardiac surgery. Nevertheless, preoperative evaluation is necessary and includes estimation of arterial hypertension grade and possible damage of target organs. In patients with first and second grade of arterial hypertension postponement of elective intervention is not necessary, only optimization of therapy. On the other hand, patients with third level arterial hypertension have benefit if intervention is postponed till the reduction of arterial pressure. There is no indication that any of the antihypertensive drug groups has advantage in the preoperative treatment of hypertension. Unlike arterial hypertension pulmonary hypertension increases the risk of cardiac morbidity and mortality in the perioperative period. In patients with pulmonary hypertension, anesthesia and surgery may be complicated with heart failure, hypoxia and arrhythmias. Preoperative and postoperative treatments include calcium channel blockers, prostanoids, endothelin receptor antagonists and inhibitors of phosphodiesterase type 5.

Preoperative preparation of patients with hyperarathyroidism planned to be operated and/or already operated because of some other disease have specific characteristics in function of the type of hyperparathyroidism, primary or secondary. In primary hyperparathyroidism, repercussions of pronounced hypercalcemia on organs and systems are of essential importance. The most important aspect of preoperative preparation of these patients is therefore the treatment of hypercalcemia. In patients with secondary hyperparathyroidism as comorbidity, calcium level is of lesser importance since it stays mostly within reference values. Essential for perioperative preparation of these patients is the fact that they have chronic renal insufficiency and usually are on extrarenal depuration, so that uremic toxic disorders important for the perioperative course should be taken into account. Disorders caused by primary or secondary hyperparathyroidism (and terminal chronic renal insufficiency) must be brough to so-called "stable state" in elective surgical interventions. Preoperative preparation in urgent surgical interventions is focused only on vitally endangering consequences of hyperparathyroidism such as hypercalcemic crisis or extreme hyperkalemia.

Background and aims: The present study attempted to identify the diagnostic significance of procalcitonin (PCT) in acute abdominal conditions as well as the range of concentrations relating to diagnosis of abdominal sepsis. Materials and methods: This was prospective clinical study. The study included 98 consecutive patients with acute abdominal conditions, divided in sepsis and systemic inflammatory response syndrome (SIRS) group. Results: PCT concentrations on admission were significantly higher in the sepsis group than in the SIRS group (median [interquartile range] 2.32 [7.41] vs 0.45 ng/ml [2.62]). A cutoff value of 1.1 ng/ml yielded 72.4% sensitivity and 62.5% specificity. In a group of patients with abdominal symptoms lasting for more than 24 h, a cut-off value of 1.1 ng/ml yielded higher sensitivity (82.9%) and higher specificity (77.3%). Conclusion: Our results suggest that PCT measurements may be useful for early, preoperative diagnosis of abdominal sepsis. © 2007 Springer-Verlag.

Intraoperative bradycardia (IOB) is one of the most common cardiac arrhythmias observed in clinical anaesthetic practice. Controlled hypotension, as a strategy of lowering patient’s blood pressure during anesthesia has been practiced for decades in head and neck surgery. The aim of our study was to determine the incidence and the risk factors for intraoperative bradycardia in maxillofacial, ear, nose and throat surgery, as well as to determine whether controlled hypotension affects the occurrence of IOB. The retrospective study included 2304 patients who underwent maxillofacial, ear, nose or throat surgery. We studied the influence of: sex, age, comorbidity, type of surgery, duration of anesthesia and controlled hypotension on the occurrence of IOB. IOB was registered in 473 patients (20.5%). Patients with controlled hypotension had IOB significantly more often than patients without controlled hypotension (33.9 vs 15.1%) (p = 0.000). The significant predictors of IOB were: age (OR = 1.158; 95% CI = 1.068–1.256; p = 0.000), sex (OR = 0.786; 95% CI = 0.623–0.993; p = 0.043), ischemic heart disease (OR = 2.016; 95% CI = 1.182–3.441; p = 0.010); ear surgery (OR = 1.593; 95% CI = 1.232–2.060; p = 0.000), anesthesia duration, (OR = 1.006; 95% CI = 1.004–1.007; p = 0.000) and controlled hypotension (OR = 2.204; 95% CI = 1.761–2.758; p = 0.000). IOB is common in maxillofacial, ear, nose and throat surgery, particularly in male, older age and patients with ishemic heart disease. The ear surgery, longer anesthesia duration and controlled hypotension raise the risk for occurrence of IOB. © 2017, Springer-Verlag GmbH Germany, part of Springer Nature.