Principles Of Evidence-based Medicine Research Articles

The history of the institute of higher and additional professional education of the Endocrinology Reserch Centre

The Endocrinology Reserch Centre is proud not only of its achievements in the area of personalized approach to the examination and treatment of patients in accordance with the principles of evidence-based medicine, the use of modern diagnostic and treatment technologies, but also of its rich history of training scientific and medical personnel. For many years the Center has been attracting the best and most talented graduates of higher medical institutions, becoming the “alma mater” for young doctors - endocrinologists, pediatric endocrinologists and nutritionists. Specialists, graduates of NMRC, make a significant contribution to the development of medicine, conducting research, creating innovative methods of treatment and helping patients not only in our country, but also abroad. However, the State Research Center of the Russian Federation FGBU «NMRC Endocrinology» is famous not only for its high-quality and comprehensive training, but also for its experienced, dedicated teaching staff, giving students unique opportunities for professional growth. The purpose of this article is to reflect the most important milestones in the development of education at NMIC Endocrinology, which began its formation more than a century ago, during the most difficult period of transition for our country.

Guideline for diagnosis and treatment of recurrent spontaneous abortion with integrated traditional Chinese and western medicine

Recurrent spontaneous abortion is one of the most common pregnancy complications in obstetrics and gynecology. The normative diagnosis and treatment of recurrent spontaneous abortion has become an important problem to be solved urgently in the field of reproductive health. The integrated traditional Chinese and western medicine provides a safe and effective treatment method for recurrent spontaneous abortion, but there is no guideline for diagnosis and treatment of recurrent spontaneous abortion with integrated traditional Chinese and western medicine. The guideline is based on the requirements of World Health Organization(WHO) handbook for guideline development and follows the principles of evidence-based medicine. Through literature pre-search, expert interviews, clinical research, and conference consensus, 16 clinical problems are identified in this guideline. PICO principles are used for evidence retrieval, screening, and synthesis. The evidence quality is evaluated for the included evidence bodies. Recommendation opinions and consensus suggestions are formed through three rounds of the Delphi expert questionnaire survey. An expert meeting is held to finalize the draft. The opinions of experts in traditional Chinese medicine, western medicine, integrated traditional Chinese and western medicine, methodology and pharmacy are widely solicited. The guideline contains five parts: scope, term and definition, diagnosis, treatment, and diagnosis and treatment flow chart of integrated traditional Chinese and western medicine. There are corresponding recommendations and summaries of evidence for clinical problems related to the diagnosis and treatment of integrated traditional Chinese and western medicine. This guideline is guided by clinical problems, combining disease differentiation and syndrome differentiation and integrating pre-pregnancy regulation and treatment and post-pregnancy preservation, highlighting the therapeutic advantages of integrated traditional Chinese and western medicine, so as to further standardize the clinical diagnosis and treatment of recurrent spontaneous abortion and promote the diagnosis and treatment level of integrated traditional Chinese and western medicine for recurrent spontaneous abortion.

Biopsychosocial model in psychiatry: an anthropo-synergistic view of the problem (Report №1)

The article is devoted to the problem of the identity of psychiatry as a medical science in the descriptive categories of biological reductionism and humanitarian-anthropological approach. The positive and negative aspects of the use of biomedical principles of evidence-based medicine in psychiatric discourse are presented. The importance of cognition of a person as a synergistic (holistic) reality is emphasized, taking into account scientific prejudices. A systematic holistic description of pathokinesis and the content of a mental disorder is given through the study of the emergent qualities of a personality and its potential. The features of various types of biopsychosocial models are given, which, in the opinion of their adherents, provide a systematic approach to the relationship of the biological substrate (the brain) with mental phenomena and social behavior.

Medical Misinformation in Polish on the World Wide Web During the COVID-19 Pandemic Period: Infodemiology Study.

Although researchers extensively study the rapid generation and spread of misinformation about the novel coronavirus during the pandemic, numerous other health-related topics are contaminating the internet with misinformation that have not received as much attention. This study aims to gauge the reach of the most popular medical content on the World Wide Web, extending beyond the confines of the pandemic. We conducted evaluations of subject matter and credibility for the years 2021 and 2022, following the principles of evidence-based medicine with assessments performed by experienced clinicians. We used 274 keywords to conduct web page searches through the BuzzSumo Enterprise Application. These keywords were chosen based on medical topics derived from surveys administered to medical practitioners. The search parameters were confined to 2 distinct date ranges: (1) January 1, 2021, to December 31, 2021; (2) January 1, 2022, to December 31, 2022. Our searches were specifically limited to web pages in the Polish language and filtered by the specified date ranges. The analysis encompassed 161 web pages retrieved in 2021 and 105 retrieved in 2022. Each web page underwent scrutiny by a seasoned doctor to assess its credibility, aligning with evidence-based medicine standards. Furthermore, we gathered data on social media engagements associated with the web pages, considering platforms such as Facebook, Pinterest, Reddit, and Twitter. In 2022, the prevalence of unreliable information related to COVID-19 saw a noteworthy decline compared to 2021. Specifically, the percentage of noncredible web pages discussing COVID-19 and general vaccinations decreased from 57% (43/76) to 24% (6/25) and 42% (10/25) to 30% (3/10), respectively. However, during the same period, there was a considerable uptick in the dissemination of untrustworthy content on social media pertaining to other medical topics. The percentage of noncredible web pages covering cholesterol, statins, and cardiology rose from 11% (3/28) to 26% (9/35) and from 18% (5/28) to 26% (6/23), respectively. Efforts undertaken during the COVID-19 pandemic to curb the dissemination of misinformation seem to have yielded positive results. Nevertheless, our analysis suggests that these interventions need to be consistently implemented across both established and emerging medical subjects. It appears that as interest in the pandemic waned, other topics gained prominence, essentially "filling the vacuum" and necessitating ongoing measures to address misinformation across a broader spectrum of health-related subjects.

Pilonidal disease: comparative analysis of leading professional organizations clinical guidelines

pilonidal disease is an inflammatory disease that is most often localized in the sacrococcygeal area and is characterized by the formation of a cyst or abscess with the possible secondary formation of fistulas. Pilonidal disease is a fairly common disease, according to individual studies, the incidence ranges from 26 cases per 100,000 people (USA) to 48 per 100,000 people (Germany). Men are three times more likely to suffer than women. Most often, the disease manifests itself between the ages of 18 and 30. The risk factors for developing the disease are: excess weight, increased hair growth, chronic trauma to the sacrococcygeal area and anatomical features of the gluteal cleft (its shape, depth, configuration). The occurrence and development of the disease in persons of working age often leads to a sharp decrease in work capacity and quality of life. There is still no single, generally accepted classification of pilonidal disease in the world. Today, there are 3 clinical guidelines created by professional associations (USA, Germany, Italy), based on the principles of evidence-based medicine. The purpose of the study is to perform a comparative analysis of the main points of the clinical guidelines of leading professional organizations (German National Guideline on the management of pilonidal disease, The American Society of Colon and Rectal Surgeons' Clinical Practice Guidelines for the Management of Pilonidal Disease, Consensus statement of the Italian society of colorectal surgery: management and treatment of pilonidal disease) regarding the clinical-diagnostic approach and the choice of optimal treatment tactics for patients with certain forms of pilonidal disease. In the study, a review and comparative analysis of literary sources from the scientific databases of medical literature PubMed Central (U.S. National Institutes of Health's National Library of Medicine), ScienceDirect (Elsevier publishing house), Wiley online library, Springer Link, Cochrane library, materials of the 3rd International Pilonidal Conference ( 2023, Copenhagen, Denmark) and clinical guidelines of specialized organizations of the USA, Germany and Italy. The following issues of diagnosis and treatment of diseases are selected for comparative analysis: choice of prevention method and non-surgical procedures that reduce the risk of disease recurrence; choice of treatment method and assessment of its necessity for asymptomatic pilonidal cysts; the choice of a surgical method of treatment for symptomatic pilonidal cysts; the choice of a method of surgical treatment for a recurrent form of PC. According to the performed analysis, it can be concluded that the diagnostic and therapeutic strategies reflected in the clinical guidelines are based on the evidence base and the analysis of research data conducted in the field of treatment of pilonidal disease, which leads to the existence of an essential correlation between the recommendations related to the choice of a method of prevention and non-surgical procedures that reduce the risk of recurrence of the disease, the method of treatment and assessment of its necessity for the asymptomatic form of the disease, methods of surgical treatment of the recurrent form of the disease. There are differences between clinical guidelines due to varying general consensus structures and main questions chosen to form a list of general provisions.

Management of bipolar disorder in South Africa: National Department of Health essential medicine selection and treatment algorithms

Background. Bipolar disorder (BD) is a severe mental illness associated with multimorbidity, psychosocial disability and significant public health issues. However, guideline heterogeneity clouds therapeutic decisions, particularly in relapse prevention. Polypharmacy and poor health outcomes are common. For low- and middle-income countries, deciding which medicines to procure and how to treat BD in an integrated manner remains elusive. Although South Africa (SA) is committed to universal health coverage, the estimated treatment gap for mental disorders in the public health sector is 91%. An Essential Medicines List (EML) enables equitable access to medicines, while Standard Treatment Guidelines (STGs) facilitate rational prescribing and quality care. Objectives. To describe the medicine selection process for the treatment of BD in the SA public health sector, and the treatment algorithms developed to guide integrated care. Methods. Evidence-based medicine principles, stakeholder consultation and consensus decision-making were used. The existing (2015) BD guideline and stakeholder comments were reviewed by a ministerially appointed expert review committee, following which a research question with eligibility criteria was formed, and rapid systematic evidence synthesis conducted. PubMed and Cochrane databases were searched for systematic reviews of randomised controlled trials and observational studies of acute and maintenance treatment in BD, with an additional PubMed search for primary research. Quality of the systematic reviews was appraised using the 11-item assessment of multiple systematic reviews. After costing to ensure affordability, final recommendations were made to the National EML Committee (NEMLC) using the strength of recommendation taxonomy classification. Following approval by the NEMLC, proposed medicines were incorporated into the 2019 National Department of Health Adult Hospital STGs. As the STGs are updated every 3 years, stakeholder input was sought in 2021 and 2023, with no changes to the medicine selection. Results. Seven systematic reviews and one observational study were included in the evidence synthesis. Six medicines were selected as essential for maintenance treatment: lithium, valproate, lamotrigine, olanzapine, quetiapine and clozapine. While risperidone and benzodiazepines were retained for acute mania, carbamazepine and fluoxetine were removed from acute depression. Treatment algorithms for predominantly manic and depressive courses of illness were constructed to encourage person-centred care, aiming for euthymia, individual functioning and relapse prevention. Conclusion. Evidence-based medicine principles enabled the NEMLC to select a range of essential medicines for the management of BD in a middle-income country. Local monitoring and evaluation are needed to inform future editions of the STGs and EML.

Clinical guidelines for diagnosis and treatment of cervical spondylotic myelopathy with the integrated traditional Chinese and Western medicine(2023)

The "Clinical Guidelines for Diagnosis and Treatment of Cervical Spondylotic Myelopathy with the Integrated Traditional Chinese and Western Medicine" were formulated by the Orthopedic and Traumatology Professional Committee of the Chinese Association of Integrative Medicine in accordance with the principles of evidence-based medicine and expert consensus, and provide clinicians with academic guidance on clinical diagnosis and treatment of CSM. The main content includes diagnostic points, disease grading assessment, TCM syndrome differentiation, surgical indications and timing, integrated traditional Chinese and Western medicine treatment, and postoperative rehabilitation. This guideline proposes for the first time that the treatment of CSM should follow the principle of grading, clarify the timing and methods of surgical treatment, establish common TCM syndrome differentiation and classification, attach importance to postoperative integrated rehabilitation of Chinese and Western medicine, and strengthen daily follow-up management. It hopes to promote the standardization, effectiveness, and safety of clinical treatment of CSM.

Assessing medical devices: a qualitative study from the validate perspective.

Our objective was to explore procedures and methods used at health technology assessment (HTA) agencies for assessing medical devices and the underlying views of HTA practitioners about appropriate methodology to identify challenges in adopting new methodologies for assessing devices. We focused on the role of normative commitments of HTA practitioners in the adoption of new methods. An online survey, including questions on procedures, scoping, and assessments of medical devices, was sent to members of the International Network of Agencies for Health Technology Assessment. Interviews were conducted with survey respondents and HTA practitioners involved in assessments of transcatheter aortic valve implantation to gain an in-depth understanding of choices made and views about assessing medical devices. Survey and interview questions were inspired by the "values in doing assessments of health technologies" approach towards HTA, which states that HTA addresses value-laden questions and information. The current practice of assessing medical devices at HTA agencies is predominantly based on procedures, methods, and epistemological principles developed for assessments of drugs. Both practical factors (available time, demands of decision-makers, existing legal frameworks, and HTA guidelines), as well as commitments of HTA practitioners to principles of evidence-based medicine, make the adoption of a new methodology difficult. There is a broad recognition that assessments of medical devices may need changes in HTA methodology. In order to realize this, the HTA community may require both a discussion on the role, responsibility, and goals of HTA, and resulting changes in institutional context to adopt new methodologies.

The Buzz Surrounding Precision Medicine: The Imperative of Incorporating It into Evidence-Based Medical Practice.

Precision medicine (PM), through the integration of omics and environmental data, aims to provide a more precise prevention, diagnosis, and treatment of disease. Currently, PM is one of the emerging approaches in modern healthcare and public health, with wide implications for health care delivery, public health policy making formulation, and entrepreneurial endeavors. In spite of its growing popularity and the buzz surrounding it, PM is still in its nascent phase, facing considerable challenges that need to be addressed and resolved for it to attain the acclaim for which it strives. In this article, we discuss some of the current methodological pitfalls of PM, including the use of big data, and provide a perspective on how these challenges can be overcome by bringing PM closer to evidence-based medicine (EBM). Furthermore, to maximize the potential of PM, we present real-world illustrations of how EBM principles can be integrated into a PM approach.

A Guide to an Iterative Approach to Model-Based Decision Making in Health and Medicine: An Iterative Decision-Making Framework.

Decision makers frequently face decisions about optimal resource allocation. A model-based economic evaluation can be used to guide decision makers in their choices by systematically evaluating the magnitude of expected health effects and costs of decision options and by making trade-offs explicit. We provide a guide to an iterative approach to the medical decision-making process by following a coherent framework, and outline the overarching iterative steps of model-based decision making. We systematized the framework by performing three steps. First, we compiled the existing guidelines provided by the ISPOR-SMDM Modeling Good Research Practices Task Force, and the ISPOR ValueofInformation Task Force. Second, we identified other previous work related to frameworks and guidelines for model-based decision analyses through a literature search in PubMed. Third, we assessed the role of the evidence and iterative process in decision making and formalized key steps in a model-based decision-making framework. We provide guidance on an iterative approach to medical decision making by applying the compiled iterative model-based decision-making framework. The framework formally combines the decision problem conceptualization (Part I), the model conceptualization and development (Part II), and the process of model-based decision analysis (Part III). Following the overarching steps of the framework ensures compliance to the principles of evidence-based medicine and regular updates of the evidence, given that valueofinformation analysis represents an essential component of model-based decision analysis in the framework. Following the provided guide and the steps outlined in the framework can help inform various health care decisions, and therefore it has the potential to improve decision making.

ENDOTHELIAL GLYCOCALYX DAMAGE IN PATIENTS WITH SEVERE FUNCTIONAL INJURY

In modern medical science, endothelial glycocalyx, which is considered a target organ in many diseases, including severe traumatic injuries, is becoming one of the main objects of researchers' attention [1,2]. Trauma is the leading cause of death and disability worldwide, and despite the introduction of damage-controlled resuscitation, mortality remains very high. More than half of trauma patients are found to have laboratory-defined coagulopathy on admission, which further leads to increased mortality [3,4]. Laboratory-defined coagulopathy, also called trauma-induced coagulopathy, is described as either excessive activation of the protein C pathway accompanied by hyperfibrinolysis or as a manifestation of the hemorrhagic phenotype of disseminated intravascular coagulation. Common to both of these explanations is that, they are based on the measurement of concentrations of pro- and anticoagulant clotting factors, platelet counts, and fibrin degradation products [5,6]. Nowadays, evidence is accumulating for a key role of the glycocalyx as one of the first structures involved in the trauma-induced coagulopathic response and it may be one of the earliest signs of progression in the severity of patients. In our study of trauma patients using whole blood thrombelastography (TEG), we found that the hemostatic profile became increasingly hypocoagulative and hyperfibrinolytic with increasing severity of injury, Therefore, studies of the significance of glycocalyx in the development of severe complications in conditions of persistently high lethality in trauma patients [7,8], are a priority and primary task of science and practical health care. Glycocalyx is a birth of a new clinical paradigm, but the full understanding of its significance and functions is still far away and researchers are only at the beginning of the way. We study the role of the endothelial glycocalyx system and analyze the relationship between markers of glycocalyx degradation and the severity of the clinical course of the disease in severe traumatic injuries. It is expected that a deeper study of the glycocalyx, understanding the relationship between the mechanisms of its degradation and trauma is extremely important and will lead to the development of new scientific strategies for early diagnosis and the possibility of predicting disease outcomes in patients with severe traumatic injuries. The object of our scientific research were patients with severe combined trauma. The study was carried out taking into account the principles of evidence-based medicine. The obtained data were processed using standard methods of statistical analysis.

Феномен терапевтического заблуждения: биоэтический аспект

Introduction.The obligatory study of medical drugs during clinical trials conduction can be named as one of the fundamental principles of evidence-based medicine. The article deals with the phenomenon of a therapeutic misconception occurring in volunteers participating in such experiments, who failed to understand the scientific goals of clinical trials and incorrectly expect the therapeutical advantages linked with such a participation. It is analyzed which methodological decisions can cause a therapeutic misconception, and also the main bioethical risks associated with this phenomenon are indicated. Theoretical analysis. It is shown that the procedure of the receipt of informed consent form is the main problematic aspect for an adequate understanding of clinical trials’ goals by its volunteers, and violation of the principle of patient autonomy can be named as a primary bioethical risk. During the COVID-19 pandemic there has been a heterogeneity of therapeutic strategies fixed because of the lack of knowledge about the new pathogen. As a result, the inability to adequately assess the risks of the intended treatment both by a patient and a doctor became a new factor that caused the therapeutic misconception. Conclusion. The procedure for obtaining informed consent form is supposed to be revised, the additional analysis of the methodology of clinical trials should be done to reduce the risk of a therapeutic misconception.

ИЗУЧЕНИЕ ПЕРСПЕКТИВ ПРИМЕНЕНИЯ ИНТРАГАСТРАЛЬНЫХ КОКТЕЙЛЕЙ С ПРЕПАРАТАМИ КОРНЯ СОЛОДКИ РАЗНОГО ГАЗОВОГО СОСТАВА ПРИ COVID-19 НА ЭКСПЕРИМЕНТАЛЬНОЙ МОДЕЛИ ИММУНОПАТОЛОГИИ, ВЫЗВАННОЙ ГАММА ОБЛУЧЕНИЕМ ЖИВОТНЫХ

This article is devoted to the results of an experimental study, the purpose of which was to clarify the mechanisms of action on the immune system of intragastric cocktails of different gas compositions (oxygen, carbon dioxide, and nitrogen), including in combination with licorice root preparations, with the subsequent prospect of use at different stages of rehabilitation of patients after COVID-19. The experimental model was male Wistar rats, whose acute external gamma irradiation causes a state of immunopathology similar to COVID-19. The data obtained indicated the presence of immunological correction effects under the influence of the studied agents. Moreover, it was noted that in cases of violations of the cellular component of immunity, preference should be given to nitrogen as a dispersion medium and carbon dioxide as a humoral medium, while the immunosuppressive effect is caused by cocktails with oxygen. Thus, it has been established that intragastric cocktails of different compositions differ from each other in the characteristics of the reactions that occur to their use, which in the future can be used at different stages of rehabilitation of patients with COVID-19 and for preventive purposes in the interpandemic period as differentiated methods of immunological correction. This requires additional clinical studies in accordance with the principles of evidence-based medicine.

Historical and current aspects of angiovisualization methods in CАD (a literature review)

The aim of the work. To summarize and expand knowledge about current methods used for visualization of coronary arteries, their evolution, capabilities, effectiveness, indications for use, safety for patients, guided by the principles of evidence-based medicine. Coronary artery disease (CАD) is an extremely common clinical cardiovascular disease, which is caused by atherosclerosis of the subepicardial coronary arteries (CAs) and can have both acute and chronic course. The incidence of CАD is increasing every year and getting younger. CАD has not only a high morbidity rate, but also a high mortality rate. In Ukraine, mortality from CАD is the main cause of population mortality. Without timely diagnosis and effective treatment, myocardial infarction or sudden cardiac death may develop. It is possible to ascertain the etiological cause of myocardial ischemia only after visualization of the СAs. A practicing physician is able to visualize the СAs using X-ray contrast coronary angiography or contrast-enhanced computed tomography of the chest. СA visualization methods have been used in clinical practice for more than half a century. The hardware and software are constantly upgraded, the diagnostic options of these methods are improved and expanded, and recommendations regarding their use in general clinical practice are updated. The main task for clinicians is to confirm or rule out the presence of a СA atherosclerotic lesion, as well as to determine its localization, extent, degree of stenosis and its significance for coronary blood flow, the presence of СA calcification, collateral pathways, plaque composition and its internal structure. Only after identifying the anatomical and physiological aspects of the atherosclerotic process in СA, it is possible to choose the right strategy for the treatment of patients by a multidisciplinary heart team including pharmacological therapy, a method of cardiac revascularization, and measures for primary or secondary prevention. Conclusions. CАD is a common disease worldwide. Today, two methods of the CА visualization are available – invasive coronary angiography and non-invasive coronary CT angiography. Further research is needed on the efficacy and safety of different СA imaging methods in CAD. Better results of the diagnostic search depend on both the capabilities of the clinic hardware component and on the optimal sequence for diagnostic processes rationally constructed by physicians.

Chinese expert consensus on the diagnosis and treatment of sacrococcygeal pilonidal disease (2023 edition)

Sacrococcygeal pilonidal disease(SPD) is an acquired disease intimately related to the presence of hair in the gluteal groove. Although its pathogenesis is still controversial, numerous treatment options are available for SPD including gluteal groove and surrounding skin hair removal, sinusectomy, open healing by secondary intention, primary closure, and local excision with flap reconstruction. Lacking of standardized diagnosis and treatment processes of SPD in China, Chinese Medical Doctor Association Anorectal Branch and its Clinical Guidelines Committee jointly organized experts in this field to form expert consensus opinion on the basis of summarizing latest research progress in China and abroad, experts' clinical experience and principles of evidence-based medicine. The expert group formed opinion in 12 terms of SPD diagnosis, risk factors, non-surgical treatment, surgical treatment, minimally invasive treatment, and wound management, and developed the "Chinese expert consensus on the diagnosis and treatment of sacrococcygeal pilonidal disease (2023 edition)" after rounds of discussion and revision, to improve the diagnosis and treatment of SPD.

Diabetes mellitus type 2: National Russian guidelines vs real clinical practice

According to the "Federal Law on the Fundamentals of Protection of the Public Health", medical care for patients should be provided in accordance with National Russian guidelines for the relevant nosology, which are based on the principles of evidence-based medicine. The article presents an analysis of the compliance with the completeness of implementation of National Russian guidelines in the treatment of patients with type 2 diabetes mellitus (DM 2) in real clinical practice. The analysis of the actual state of management of DM 2 patients was carried out from the Federal Register of diabetes as of 01.01.2023. Incomplete compliance with the guidelines on the frequency of measuring glycated hemoglobin, the rate of intensification of hypoglycemic therapy, and the appointment of new classes of hypoglycemic drugs was established. Possible reasons for the identified discrepancies between real practice and guidelines requirements are discussed, as well as possible measures to overcome these discrepancies.

Modern Approaches to the Management of Patients with Urticaria

The Union of Pediatricians of Russia together with the Russian Association of Allergologists and Clinical Immunologists and the Russian Society of Dermatovenerologists and Cosmetologists have developed new clinical guidelines for the urticaria in adults and children. Urticaria is a common disease; its various clinical variants are diagnosed in 15–25% of people in the global population, and a quarter of all cases belongs to chronic urticaria. The prevalence of acute urticaria is 20%, and 2.1–6.7% in child population, whereas acute urticaria is more common in children than in adults. The prevalence of chronic urticaria in adults in the general population is 0.7 and 1.4%, and 1.1% in children under 15 years of age, according to the systematic review and meta-analysis, respectively. This article covers features of epidemiology, etiology, and pathogenesis of the disease with particular focus on differential diagnostic search. Guidelines on treatment and step-by-step therapy scheme (both based on principles of evidencebased medicine) for pediatric patients were presented. Clarification on the analysis of the therapy efficacy and the degree of disease activity was given.

Variants of the typical variability of alveolar arches in different craniotypes

Background. The implementation of the principles of evidence-based medicine in applied and fundamental research consists in the precision of morphometric measurements in determining the types, dimensions and spatial location of the facial and cerebral parts of the skull. Published scientific data on the variability of morphometric parameters of the alveolar arches are contradictory and heterogeneous due to the lack of definition of interdependencies with gender, age characteristics and individual features of the skull.Goal. Investigation of the regularities between morphometric values and forms of the alveolar arches of the upper jaw in mesocrane, brachycrane and dolichocrane types of the skull.Materials and methods. Morphometry was performed on 93 preparations of skulls with lower jaws of both sexes of the first and second periods of adulthood with physiological types of bite and the shapes of the alveolar arches of the upper jaw were established. Taking into account the value of the transverse-longitudinal index, the skulls of mesocrane (n=54; 58.1%), brachycrane (n=23; 24.7%) and dolichocrane (n=16; 17.2%) types were identified. The length, width, depth and diagonal of the alveolar arches were studied as morphometric parameters.Results. The minimum and maximum limits of fluctuations of values, average statistical indicators, coefficients of variation are determined. The variability of the parameters of the alveolar arches of the upper jaw depending on the shape of the facial skull and gender characteristics was established. It is proved that the smallest values of the depth of the alveolar arch of the upper jaw are noted in brachycranes, the largest – in dolichocrans, while the smallest dimensions of the length, width of the alveolar arch of the upper jaw are determined in dolichocrans, and the largest – in brachycranes, while the smallest diagonal values of the alveolar arch of the upper jaw are revealed in mesocrans.Conclusions. The shape of the alveolar arches in the mesocrane type of skull has a proportional arcuate shape, in brachycrania − an arcuate «wide and short» shape, in dolichocrania − an arcuate «narrow and long» shape. The obtained new data on the variant variability of the alveolar arches should be used when planning treatment tactics for patients with complete adentia.

Determination of the diagnostic potential of research methods in the differentiation of pancreatic cancer and chronic pancreatitis based on evidence-based medicine

Background. Currently, the use of the principles of evidence-based medicine is an integral part of assessing the effectiveness and safety of modern technology for the diagnosis and treatment of any disease or clinical condition. Differential diagnosis of pancreatic cancer and chronic pancreatitis is one of the most controversial issues in surgical pancreatology. The reduced number of cases of resectable pancreatic cancer indicates the need to develop programs for the differentiation of these pathologies with the wide implementation of modern diagnostic methods.
 Purpose − to compare the results of diagnostic methods (which are standardly used in accordance with clinical guidelines for the diagnosis of chronic pancreatitis) based on evidence-based medicine and quantitative assessments of their specificity, sensitivity, and general accuracy in terms of the differential diagnosis of chronic pancreatitis and pancreatic cancer in order to determine the most significant results for the differentiation of these pathologies.
 Materials and methods. The results of diagnostic methods were compared in 80 patients, among them 38 (47.5%) had pancreatic cancer, and 42 (52.5%) − chronic pancreatitis with predominant lesion of the pancreatic head. The patients underwent general clinical blood and urine tests, biochemical blood tests, and the following procedures and examinations available in the clinic: ultrasound examination of the abdominal organs, spiral computed tomography, fibrogastroduodenoscopy, endoscopic retrograde cholangiopancreatography, magnetic resonance imaging, CA 19-9 tumor marker test, ultrasound-guided percutaneous puncture of the pancreas, aspiration of pancreatic juice, urgent intraoperative biopsy, and histological examination of surgically resected areas of the pancreas. Based on the received data, we performed a comparison of their quality, accuracy, and informativeness.
 Results. Ultrasound imaging is a screening method for suspected pancreatic cancer, however, the overall accuracy, sensitivity, and specificity of the method are quite low (82.5%, 76.32%, 88.10%, respectively). When analyzing the qualitative characteristics of endoscopic retrograde cholangiopancreatography, the overall accuracy, sensitivity, and specificity indicators for the differential diagnosis of pancreatic cancer were 71%, 78.6%, and 63.3%, respectively. The interval assessment of the accuracy of the method of transcutaneous biopsy of the pancreas aimed at determining chronic pancreatitis was (34.9; 96.8)%; for pancreatic cancer – (8.5; 75.5)%. The interval assessment of the accuracy of the method of endoscopic aspiration of pancreatic juice for chronic pancreatitis was (6.8; 93.2)%; for pancreatic cancer – (19.4; 99.4)%. An increase in the level of CA 19-9 was found in 40.5% of patients (CI95% from 27.0% to 55.5%), while the average level was significantly higher in pancreatic cancer. The level of the CA 19-9 tumor marker depended on the size of the tumor and the spread of the process, and during the dynamic observation in the settings of treatment, it had a tendency to decrease, which indicated chronic pancreatitis. The significance of intraoperative morphological verification of the diagnosis of pancreatic cancer in histological examination was 98%, in cytological examination – 95.3%, in 4.7% urgent intraoperative biopsy was questionable. In all examinations, the surrounding tumor tissue showed a morphological pattern of chronic pancreatitis, in 36 (88%) cases – with foci of metaplasia and intraductal neoplasia of the epithelium, which can be considered as a background for the development of intraductal adenocarcinoma. At the same time, cancerous occlusion of the ducts led to their expansion above the point of narrowing with pronounced fibrous changes and inflammatory reaction of the stroma that was accompanied by widespread atrophy of the parenchyma.
 Conclusions. On the basis of evidence-based medicine, it was established that spiral computed tomography is the most informative method for the differential diagnosis of pancreatic cancer with chronic pancreatitis, with an overall accuracy of 92.2%, sensitivity of 89.2%, and specificity of 95%. The low qualitative indicators of ultrasound diagnostics can be increased due to its complex combination with the CA 19-9 tumor marker test with an overall accuracy of 92.3%, with sensitivity and specificity of 95% and 91%, respectively, which is significantly different from such indicators when the method was used separately (82.5%, 76.3%, and 88.1%, respectively). In the cases when the complex combination of endoscopic retrograde cholangiopancreatography with the measurement of the level of the CA 19-9 tumor marker was used, the overall accuracy of the method was 95.2%, with sensitivity of 95% and specificity of 95.5%, which is significantly different from such indicators obtained when the method was used separately (71%, 78.6% and 63.3%, respectively). Advances in modern imaging methods cannot replace histological examination as the «gold standard» for the correct determination of the morphological substrate of these pancreatic lesions.

Claims in the clinic: A qualitative group interview study on healthcare communication about unestablished side effects of the copper IUD.

Lay online communication about health-related issues has in recent years largely been associated with the spread of misinformation and decreased trust in healthcare. Such communication has included claims about systemic side effects of the copper IUD. In Sweden, a social media group centered on this issue now gathers around 8,700 members. This study aimed to use the case of reported yet unestablished side effects of the copper IUD to investigate experiences of and reasoning about healthcare encounters between caregivers and patients contesting established medical knowledge. We conducted qualitative, semi-structured, digital group interviews with members of the social media group (seven groups, n = 23) and with midwives and gynecologists (six groups, n = 15). We also gathered essays written by social media group members (n = 23). The material was analyzed thematically. The participant accounts pointed towards tensions related to principles of evidence-based medicine, i.e., perceived insufficiency of research on the safety of the copper IUD and lack of clarity in routines for reporting and following up suspected side effects, and of patient-centered care, i.e., listening respectfully to patients. Tension between caregivers' obligation to adhere to evidence-based medicine while also providing patient-centered care was noted. Healthcare providers' efforts to assess and address patient claims contesting established medical knowledge should include ensuring and communicating sufficient research, clarifying procedures for reporting suspected side effects, and improving person-centered care. This can increase the quality of care while contributing to the mitigation of distrust in healthcare and the spreading of health-related misinformation.