scholarly journals The Importance of Risk Factors, Methods of Their Calculation and Evaluation, Prognosis in Medicine (Literature Review; Examples of Their Use in Own Clinical Practice) – Second Notice

2021 ◽  
Vol 2-3 (35-36) ◽  
pp. 70-81
Author(s):  
О. Fayura ◽  
◽  
А. Маksymuk ◽  
О. Аbrahamovych ◽  
М. Аbrahamovych ◽  
...  

Introduction. Despite the latest advances in modern medicine, the direct etiological factors of many diseases remain unknown or it is impossible to determine the significance of each of them in their occurrence, so the theory of risk factors is extremely relevant for both theoretical and practical medicine. There are also often situations in which it is necessary to determine the optimal tactics of patient care, because preventive, curative and rehabilitation activities of the doctor require timely prediction of the occurrence probability, further course of the pathological process, its complications, recurrences under the influence of certain environmental factors, threatening and terminal stages, side effects of drugs. Therefore, the need for a practical solution to these problems has become the basis for the theory of risk factors and prognosis methods. The aim of the study. Describe the importance of risk factors and methods of their calculation and evaluation, prognosis in medicine, using literature sources, provide specific examples of their use in own clinical practice. Materials and methods. Content analysis, method of system and comparative analysis, bibliosemantic method of studying the current scientific researches concerning studying of the importance of risk factors and a technique of their calculation and estimation, prognosis in medicine were used. Sources were searched in scientometric databases: PubMed, Medline, Springer, Google Scholar, Research Gate by keywords: risk factors, one-way analysis, multi-factor analysis. 54 literary sources in English and Ukrainian, which highlight the importance of risk factors and methods of their calculation and evaluation, prognosis in medicine were selected and analyzed, we describe the results of their use in our own clinical practice. Results. The concept of risk, as the probability of an adverse event or outcome, is most often used in analytical studies, which are planned to identify the causes and their prevalence of certain conditions. "Risk" cannot be measured directly by the results of information evaluation in one person, but is calculated on the basis of selective observation of a group of persons who are under the influence (exposed group) of a certain factor. Risk factors are potentially pathogenic factors, in contact with which a person may develop a disease. A full analysis of pathological processes, assessment of risk factors and actual risks are impossible without prognosis, as well as multivariate analysis, which is often based on the probabilistic method of A. Wald or the survival curves construction. In practical health care, cases of medical and social research and in clinical studies, it is often necessary to identify the trends (predict) in changes of a certain condition. Conclusions. Determining the risk factors, calculating the actual risks and prognosis play an important role in medicine, because in the doctor's practice there are daily situations that need to determine the optimal tactics taking into account trends, course, severity and results of treatment, therefore, their definition/calculation must be clear and understandable. Depending on the case, the doctor can use the analysis of the score for certain factors, create risk groups, develop a monitoring plan etc. As a result, it becomes possible to create a plan of preventive measures and timely correction of treatment. Keywords: risk, relative risk, absolute risk, chance, forecast.

2021 ◽  
Vol 1-2 (33-34) ◽  
pp. 51-64
Author(s):  
О. Fayura ◽  
◽  
А. Маksymuk ◽  
О. Аbrahamovych ◽  
М. Аbrahamovych ◽  
...  

Context. Despite the latest advances in modern medicine, the direct etiological factors of many diseases remain unknown or it is impossible to determine the significance of each of them in their occurrence, so the theory of risk factors is extremely relevant for both theoretical and practical medicine. Besides, there often occur situations in which it is necessary to determine the optimal tactics of patient care, because preventive, curative and rehabilitation activities of the doctor require timely prediction of the occurrence probability, further course of the pathological process, its complications, recurrences due to certain environmental factors, threatening and terminal conditions, side effects of drugs. Therefore, the need for a practical solution to these problems has become the basis for the theory of risk factors and prognosis methods. Objective. To determine the significance of risk factors and methods of their calculation and evaluation, prognosis in medicine, using literature sources, provide specific examples of their use in one’s own clinical practice. Materials and methods. Content analysis, method of systemic and comparative analysis, bibliosemantic method of studying the current scientific researches concerning the investigation of the importance of risk factors and a technique of their calculation and estimation, prognosis in medicine were used. The sources were searched for in scientometric databases: PubMed, Medline, Springer, Google Scholar, Research Gate by keywords: risk factors, one-way analysis, multi-factor analysis. 54 literary sources in English and Ukrainian, which highlight the importance of risk factors and methods of their calculation and evaluation, prognosis in medicine were selected and analyzed to describe the results of their use in our own clinical practice. Results. The concept of risk, as the probability of an adverse event or outcome, is most often used in analytical studies, which are planned to identify the causes and their prevalence of certain conditions. Risk cannot be measured directly by the results of information evaluation in one person, but is calculated on the basis of selective observation of a group of persons who are under the influence (exposed group) of a certain factor. Risk factors are potentially pathogenic factors, in contact with which a person may develop a disease. A full analysis of pathological processes, assessment of risk factors and actual risks are impossible without prognosis, as well as multivariate analysis, which is often based on the probabilistic method of A. Wald or the survival curves construction. In practical health care, cases of medical and social research and in clinical studies, it is often necessary to identify the trends (predict) in changes of a certain condition. Conclusions. Determining the risk factors, calculating the actual risks and prognosis play an important role in medicine, because in the doctor’s practice there are daily situations that need to determine the optimal tactics taking into account trends, course, severity and results of treatment. Therefore, their definition/calculation must be clear and understandable. Depending on the case, the doctor can use the analysis of the score for certain factors, create risk groups, develop a monitoring plan, etc. As a result, it becomes possible to create a plan of preventive measures and timely correction of treatment.


2017 ◽  
pp. 7-10 ◽  
Author(s):  
K. V. YEVDOKIMOV ◽  
V. B. ROVNIY ◽  
I. V. BABACHENKO ◽  
E. V. SHARIPOVA

The review focuses on respiratory syncytial virus infection (RSVI) and, based on the literature and authors' own observations, highlights epidemiological aspects and risk factors for RSVI (including severe forms of the infection), the specific clinical manifestations, challenges of laboratory diagnostics, and the benefits of various methods and their relevance in clinical practice. The available types of RSVI therapies are discussed based on meta-analyses of the data. The authors emphasize the importance of palivizumab in the specific passive prevention of respiratory syncytial virus infection in children from risk groups.


Author(s):  
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Vladimir Florensov ◽  
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Andrey Petukhov ◽  
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...  

Rare occurrence, absence of specific clinical manifestations, difficult diagnostics on early stages, and insufficient experience in treatment of endometriosis genitalis externa deserve special attention. The study summarizes the results of treatment of scar endometriosis in four patients (three of reproductive and one of late reproductive age) describing clinical and diagnostic peculiarities of all cases. We revealed no specific laboratory diagnostic criteria of the pathology. The article is illustrated with photos of ultrasound findings, surgical field, a fragment of scar tissue removed during the surgery, and photomicrographies of surgical specimen histological sections. All presented pictures are described with indication of pathological process markers. We have stated the discrepancy between the sizes of endometrioid infiltrations in anterior abdominal wall revealed with echosonography and the sizes of those found during the surgery. During the surgery, we discovered that parietal peritoneum was not involved in pathological process. Basing on our observations, we have made recommendations on formation of scar endometriosis risk groups. In all four cases, surgical treatment with succeeding course of hormone therapy resulted in recovery of the patients.


2015 ◽  
Vol 18 (4) ◽  
pp. 140 ◽  
Author(s):  
Mehmet Taşar ◽  
Mehmet Kalender ◽  
Okay Güven Karaca ◽  
Ata Niyazi Ecevit ◽  
Salih Salihi ◽  
...  

Background: Carotid artery disease is not rare in cardiac patients. Patients with cardiac risk factors and carotid stenosis are prone to neurological and cardiovascular complications. With cardiac risk factors, carotid endarterectomy operation becomes challenging. Regional anesthesia is an alternative option, so we aimed to investigate the operative results of carotid endarterectomy operations under regional anesthesia in patients with cardiac risk factors. <br />Methods: We aimed to analyze and compare outcomes of carotid endarterectomy under regional anesthesia with cardiovascular risk groups retrospectively. Between 2006 and 2014, we applied 129 carotid endarterectomy ± patch plasty to 126 patients under combined cervical plexus block anesthesia. Patients were divided into three groups (high, moderate, low) according to their cardiovascular risks. Neurological and cardiovascular events after carotid endarterectomy were compared.<br />Results: Cerebrovascular accident was seen in 7 patients (5.55%) but there was no significant difference between groups (P &gt; .05). Mortality rate was 4.76% (n = 6); it was higher in the high risk group and was not statistically significant (P = .180). Four patients required revision for bleeding (3.17%). We did not observe any postoperative surgical infection.<br />Conclusion: Carotid endarterectomy can be safely performed with regional cervical anesthesia in all cardiovascular risk groups. Comprehensive studies comparing general anesthesia and regional anesthesia are needed. <br /><br />


2011 ◽  
Vol 3 (1) ◽  
pp. 30
Author(s):  
Anding Xu ◽  
Zefeng Tan ◽  
◽  

Hypertension is the most important of the prevalent and modifiable risk factors for stroke. Based on evidence, blood pressure (BP) lowering is recommended in guidelines for the prevention of stroke. However, there are still some uncertainties in the guidelines for controlling BP and preventing stroke in patients with previous cerebrovascular events, such as the goal BP, who to treat and which class of BP-lowering drugs to use. This article discusses these questions by reviewing guidelines and corresponding clinical trials, with the aim of reducing the gap between guidelines and clinical practice.


Author(s):  
Б.И. Гельцер ◽  
Э.В. Слабенко ◽  
Ю.В. Заяц ◽  
В.Н. Котельников

Одним из основных требований к разработке экспериментальных моделей цереброваскулярных заболеваний является их максимальная приближенность к реальной клинической практике. В работе систематизированы данные по основным методам моделирования острой ишемии головного мозга (ОИГМ), представлена их классификация, анализируются данные о преимуществах и недостатках той или иной модели. Обсуждаются результаты экспериментальных исследований по изучению патогенеза ОИГМ с использованием различных моделей (полной и неполной глобальной, локальной и мультифокальной ишемии) и способов их реализации (перевязка артерий, клипирование, коагуляция, эмболизация и др.). Особое внимание уделяется «стабильности» последствий острого нарушения мозгового кровообращения: необратимых ишемических повреждений головного мозга или обратимых с реперфузией заданной продолжительности. Отмечается, что важное значение в этих исследованиях должно принадлежать современным методам прижизненной визуализации очагов острого ишемического повреждения, что позволяет оценивать динамику патологического процесса. Предлагаемый метод отвечает требованиям гуманного обращения с животными. Подчеркивается, что выбор релевантной модели ОИГМ определяется задачами предстоящего исследования и технологическими ресурсами научной лаборатории. Development of experimental models for acute forms of cerebrovascular diseases is essential for implementation of methods for their prevention and treatment. One of the principal requirements to such models is their maximum approximation to actual clinical practice. This review systematized major models of acute cerebral ischemia (ACI), their classification, and presented information about their advantages and shortcomings. Also, the review presented results of experimental studies on pathophysiological mechanisms of different types of modeled ACI (complete and incomplete global, local, and multifocal ischemia) and methods for creating these models (arterial ligation, clipping, coagulation, embolization, etc.). Particular attention was paid to “stability” of the consequences of acutely impaired cerebral circulation - an irreversible ischemic brain injury or a reversible injury with reperfusion of a given duration. The authors emphasized that in such studies, a special significance should be given to intravital imaging of acute ischemic damage foci using modern methods, which allow assessing the dynamics of the pathological process and meet the requirements to humane treatment of animals. The choice of a relevant ACI model is determined by objectives of the planned study and the technological resources available at the research laboratory.


2021 ◽  
Vol 108 (Supplement_1) ◽  
Author(s):  
SJ Tingle ◽  
ER Thompson ◽  
SS Ali ◽  
IK Ibrahim ◽  
E Irwin ◽  
...  

Abstract Introduction Biliary leaks and anastomotic strictures are common early biliary complications (EBC) following liver transplantation. However, their impact on outcomes remains controversial and poorly described. Method The NHS registry on adult liver transplantation between 2006 and 2017 was retrospectively reviewed (n=8304). Multiple imputations were performed to account for missing data. Adjusted regression models were used to assess predictors of EBC, and their impact on outcomes. 35 potential variables were included, and backwards stepwise selection enabled unbiased selection of variables for inclusion in final models. Result EBC occurred in 9.6% of patients. Adjusted cox regression revealed that EBCs have a significant and independent impact on graft survival (Leak HR=1.325; P=0.021, Stricture HR=1.514; P=0.002, Leak plus stricture HR=1.533; P=0.034) and patient survival (Leak HR=1.218; P=0.131, Stricture HR=1.578; P&lt;0.001, Leak plus stricture HR=1.507; P=0.044). Patients with EBC had longer median hospital stay (23 versus 15 days; P&lt;0.001) and increased chance for readmission within the first year (56% versus 32%; P&lt;0.001). On adjusted logistic regression the following were identified as independent risk factors for development of EBC: donation following circulatory death (OR=1.280; P=0.009), accessory hepatic artery (OR=1.324; P=0.005), vascular anastomosis time in minutes (OR=1.005; P=0.032) and ethnicity ‘other’ (OR=1.838; P=0.011). Conclusion EBCs prolong hospital stay, increase readmission rates and are independent risk factors for diminished graft survival and increased mortality in liver transplantation. We have identified factors that increase the likelihood of EBC occurrence; further research into interventions to prevent EBCs in these at-risk groups is vital to improve liver transplantation outcomes. Take-home message Using a large registry database we have shown that early anastomotic biliary complications are independent risk factors for decreased graft survival and increased mortality after liver transplantation. Research into interventions to prevent biliary complications in high risk groups are essential to improve liver transplant outcomes.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yanxia Gao ◽  
Liwen Liu ◽  
Tiegang Li ◽  
Ding Yuan ◽  
Yibo Wang ◽  
...  

AbstractTo identify risk factors and develop a simple model to predict early prognosis of acute paraquat (PQ) poisoning patients, we performed a retrospective cohort study of acute PQ poisoning patients (n = 1199). Patients (n = 913) with PQ poisoning from 2011 to 2018 were randomly divided into training (n = 609) and test (n = 304) samples. Another two independent cohorts were used as validation samples for a different time (n = 207) and site (n = 79). Risk factors were identified using a logistic model with Markov Chain Monte Carlo (MCMC) simulation and further evaluated using a latent class analysis. The prediction score was developed based on the training sample and was evaluated using the testing and validation samples. Eight factors, including age, ingestion volume, creatine kinase-MB [CK-MB], platelet [PLT], white blood cell [WBC], neutrophil counts [N], gamma-glutamyl transferase [GGT], and serum creatinine [Cr] were identified as independent risk indicators of in-hospital death events. The risk model had C statistics of 0.895 (95% CI 0.855–0.928), 0.891 (95% CI 0.848–0.932), and 0.829 (95% CI 0.455–1.000), and predictive ranges of 4.6–98.2%, 2.3–94.9%, and 0–12.5% for the test, validation_time, and validation_site samples, respectively. In the training sample, the risk model classified 18.4%, 59.9%, and 21.7% of patients into the high-, average-, and low-risk groups, with corresponding probabilities of 0.985, 0.365, and 0.03 for in-hospital death events. We developed and evaluated a simple risk model to predict the prognosis of patients with acute PQ poisoning. This risk scoring system could be helpful for identifying high-risk patients and reducing mortality due to PQ poisoning.


2021 ◽  
Vol 22 (1) ◽  
Author(s):  
M D Saju ◽  
Bindiya M Varghese ◽  
Lorane Scaria ◽  
Anuja Maria Benny ◽  
Shilpa V Yohannan ◽  
...  

Abstract Background Kerala is known as the diabetes mellitus (DM) and hypertension (HTN) capital of the world, thus compelling health professionals to model strategies, addressing their social, behavioural, and cognitive risk factors and eliminating various barriers to management. This paper describes the protocol of our study that aims to examine the effectiveness and sustainability of an integrated care model for the management of chronic conditions and their risk factors through a family-based intervention. The proposed care model targets to modify systems and processes that predispose to chronic conditions by enhancing social cohesion and social networks, preventing lifestyle risks, developing iterative cognitive interventions, and engaging the family into customised treatment adherence strategies navigated by community health social workers (CHSWs). Methods A cluster randomised controlled trial (RCT) in selected participants will be conducted involving additional assessments prior to the baseline assessment. The assessment will identify and categorise patients into four risk groups, namely behavioural, social, cognitive, and multiple, based on dominant risks identified. Eligible participants will be randomly allocated (at a ratio of 1:1) into the intervention or control arm. The intervention arm will receive social, behavioural, and cognitive or multiple interventions corresponding to the identified risk groups, whereas the control arm will receive general intervention. Both the groups will be followed up at 6 months and 12 months post baseline to measure outcomes. The primary outcome will be the control of HTN and DM, and secondary outcomes include decreased depression and anxiety and improved functioning, social cohesion, and social network linkages. The sustainability and scalability of this intervention will be assessed through cost effectiveness, acceptability, and user friendliness of the integrated approach by performing a qualitative evaluation. Discussion This RCT will inform the potential paradigm shift from a medical model of chronic condition management to a multidimensional, multisystem, and multidisciplinary convergence model navigated by CHSWs. Such a model is not currently considered in the management of chronic conditions in Kerala. Trial registration Trial has been prospectively registered on Clinical Trial Registry of India- CTRI/2020/12/029474 on 1st December 2020.


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