Abstract. The number of patients with diabetes increases annually. Modern forecasts predict that diabetes will be the seventh leading cause of death in 2030. Despite many significant advances in the research of diabetes and the use of new modern treatments, the disease is still progressing, and it is necessary to continue to study the effects of diabetes on human systems and organs: kidney and myocardium. Methods. A total of 24 rats of reproductive age (6 months old) were involved in this experimental study. Experimental rats were injected with alloxan intraperitoneally once at a dose of 20 mg/100 g on an empty stomach. In addition, they received a 10% glucose solution 24 hours after alloxan injection and a 5% glucose solution during the experiment. We measured glucose level with Accu-Chek Advantage (Boehringer, Germany) after 2, 12, and 24 hours after alloxan injection, and then weekly. The subjects of the investigation were kidney and heart of the experimental (n=12) and control (n=12) animals for correct comparative analysis. Results. The average blood glucose level remained at 11 mmol/L ± 2 mmol/L. During the experimental period, the rats' weight gain, dilation of both ventricles and relative renal weight gain were determined. By the histological examination of the myocardium, we revealed polymorphic nuclei, perinuclear cytolysis, fragmentation, wavy-like deformation of cardiomyocytes, stromal and perivascular edema, uneven filling of blood vessels, and local fibrosis. Thinning of fibrous capsule and cortical layer, destruction of nephrons, and hemorrhages were detected in the kidney. Conclusions. Our study confirms the robustness of alloxan-induced hyperglycemia in rats. We came to this conclusion because the early changes in the kidneys and heart are explained by the development of microangiopathies, which is a typical feature of the pathogenesis of diabetes. With prolonged exposure to chronic hyperglycemia, structural disorders of vital organs are worsened. This experimental model could be used for conducting comprehensive research aimed to study the mechanisms of diabetes mellitus, the effects of hyperglycemia on organs and tissues, and correct the complications.
Objective. To estimate the efficiency of different methods of temporary external hemostasis at the pre-hospital stage of emergency medical care, taking into account the localization of injuries. Material and Methods. The cases (n=86) of prehospital emergency medical care for patients with external bleeding were studied. The data on the victims (age, gender), clinical status (type and location of injuries, type of bleeding), the volume of emergency care, the hemostasis methods used to control bleeding, their efficiency, side effects, difficulty of use were collected, and the duration of the pre-hospital stage were also taken into account. Results. The study found out that the most common cause of external bleeding is domestic accident (45.35%) of cases. By the nature of tissue damage, the cut wounds prevailed. Multiple or combined injuries occurred in 13.95% of cases. A tourniquet was the main method of hemostasis. Contact hemostatic agents were used only in 2.32% of cases at the pre-hospital stage. In some cases, when attempting to control the external bleeding, several hemostatic agents were sequentially used due to the lack of their efficacy. In 17.4% of cases, the victims with multiple or combined injuries received intravenous administrationof the systemichemostatic agents. In the complex of anti-shock measures in patients with severe trauma 77.91% of the prehospital patients underwent infusion therapy. Isotonic crystalloid solutions were used. A reliable increase in the duration of the prehospital stage of victims who underwent to a combination of hemostasis methods and intravenous infusion has been registered. The increase in the length of the prehospital stay occurs at the expense of the time required for creation of venous access and initiate infusion. The authors propose the algorithm for temporal control of external bleeding during emergency medical care at the pre-hospital stage. Conclusion. The main principles that need to be guided in the choice of any methods for stopping of bleeding are the speed and reliability of hemostasis for entire time of evacuation and the minimum damaging effect on the tissues. What this paper adds The effectiveness of various methods for temporal external hemostasis at the pre-hospital stage of emergency medical treatment taking into account the localization of injuries was estimated. It has been established that the main principles that must be followed in choosing any of the methods for stopping the bleeding are the speed and reliability of hemostasis for the entire duration of evacuation and the minimal tissue damage.
The article considers the issues of experiments on animals during the training process of medical students. The objective of the work is to assess the possibility, necessity and expediency of experiments on animals during the training of medical students with identification of possible alternatives. An anonymous impersonal survey of 83 interns was conducted. The purpose of the experiments, animal species, methods of anesthesia, respondent’s role in the experiment, and the level of acquired knowledge were investigated. As an option, the respondents offered an alternative to experiments on animals during the educational process. It was found that 47% of respondents perceive experiments on animals during training as an indispensable, traditional and common practice. A significant part of respondents (33.7%) stated complete absence of new information obtained, 47% admitted that the level of knowledge obtained was moderate, and 19.3% reported considerable level of knowledge obtained. Most respondents were not familiar with the same issue in other countries and with the relevant national laws and regulations. In general, 86.7% of respondents expressed their negative attitude to causing harm to animals. The practice of experiments on animals must be brought into accordance with legal requirements. It is unacceptable to use animals for educational purposes, if this goal can be achieved in other ways. Animal testing is justified only when there is a reason to expect that the results will significantly contribute to the solution of current scientific problems. The introduction of alternative methods and means in the educational process will improve the learning process and reduce the number of experiments on animals.
Currently, anesthesiologists-resuscitators have a large number of sedatives (hypnotics, general anesthetics, anxiolytics), but many of them, in addition to the main action, give a number of side effects or do not provide optimal sedation. On the other hand, there are new modern drugs for sedation, thus, the need to correct existing regimens of sedative therapy is quite timely and necessary. The aim of the study was to examine the advantages and disadvantages of different sedation methods in patients with urological profile operated under spinal anesthesia. 80 patients (54 men and 26 women) who underwent urological surgery under balanced anesthesia (spinal anesthesia in combination with drug sedation) were examined. Patients were randomly divided into two groups. Group 1 (n = 40) – sedation with dexdor, group 2 (n = 40) – sedation with diprivan. The level of sedation was assessed using the RAMSEY scale, the degree of post-anesthesia recovery on the Bidway five-point scale, and anesthesia satisfaction was assessed using the Lowa Satisfaction with Anesthesia Scale (ISAS). The degree of hemodynamic disorders was determined by continuous monitoring of heart rate, blood pressure and ECG. The normality of the distribution was checked using the Shapiro–Wilk method. The Mann–Whitney test was used to assess the statistical significance of the difference between the two independent groups. Results. The study showed that a deeper level of sedation during surgery was observed in the second group (sedation with diprivan). In this group, postoperative drowsiness was also higher both during the first 15 minutes and 30 minutes after surgery. Despite the fact that patients receiving dexdor had more superficial sedation, they generally showed significantly higher overall satisfaction with anesthesia. The study proved the effectiveness and safety of both drugs for sedation in urological patients under spinal anesthesia. However, a number of important advantages of dexdor were found as compared to diprivan. Dexdor, due to its ability to cause mild to moderate sedation, allows the patient to contact staff, almost does not suppress respiration, lets the patient feel comfortable and causes sufficient retrograde amnesia.
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