Introduction. Silver nanoparticles play a significant role in different fields of health sciences such as Dentistry, these nanoparticles revolutionize the way several types of treatments are performed. The application of nanoparticles can improve the dental materials’ physical and chemical properties, increase their efficacy, and enhance the effect after application. Nanoparticles are considered an innovative and promising technology in dentistry, as they can optimize early diagnosis and treatment methods in a significantly shorter time. Objective. To present a comprehensive and updated review of silver nanoparticles, their biological activities, and antimicrobial applications in dentistry. Methodology. The collection of information was based on scientific evidence on nanoparticles in the field of dentistry, where the databases used for the search of information were SciELO, ProQuest, Scopus, and Dialnet. Boolean operators were used to search for information: "AND" "OR" and "NOT." The keywords used to search for articles were "nanoparticles" and "dentistry." Results. After applying the inclusion and exclusion criteria, 900 articles were analyzed, of which 33 were identified as suitable for literature review. Conclusion. Nanoparticles used in dentistry have antimicrobial properties that, when combined with other substances and components used in the practice of different professional fields of dentistry, can control and prevent the spread of bacteria.

Introduction. Monkeypox became a new health emergency after a new outbreak appeared in unusual endemic places of the disease, affecting five continents with approximately 16,836 cases, and occurring mostly in men who have sex with men. The new means of transmission is sexual contact. This zoonosis may present rare neurological complications including encephalitis and meningitis. Objective. To develop a bibliographic review of the scientific literature of the last five years on monkeypox as a new worldwide health emergency that provides relevant information for the clinical description of the neurological complications associated with it, favoring its diagnosis, treatment, prognosis, and prevention. Methodology. A bibliographic review of the scientific literature was developed considering articles published, during the last five years, in indexed journals visible in databases of regional and worldwide coverage such as Scopus, WOS, Taylor and Francis and PubMed on neurological complications attributable to monkeypox considering its clinical description to favor diagnosis, treatment, prognosis and effective prevention. The language selected was English and Spanish. Results. The bibliographic review of the literature showed 40 potentially eligible articles, 37 were selected that addressed the aspects under study, which allowed clarification of the clinical expression, complications, positive elements for diagnosis, therapeutic options, and prognosis in endemic and epidemic conditions. Special consideration was given to vaccination alternatives and antiviral prophylaxis. Conclusion. The neurological complications of monkeypox virus infection, although sporadic and infrequent, can cause serious conditions such as encephalitis and meningitis that require early diagnosis and timely treatment considering the efficacy of the arsenal of available antiviral drugs. Prevention of the disease is an essential element in clinical epidemiological control and there are vaccines and antivirals under evaluation that constitute viable alternatives.

The investigate on is based on the musculoskeletal disorders experienced in the construction area. It is proposed to establish what the causes are related to musculoskeletal disorders in workers in the construction area of ​​Cuenca-Ecuador. The study is quantitative and praises the theoretical construct that workload is associated with musculoskeletal disorders. 41 people from the construction company Flores were investigated. The results reveal that there is a negative correlation between the workload and -0.353*, with the tests being statistically significant at a level less than the p-value of 0.05. The medical history variable did not pass the statistical test, with a correlation coefficient of -0.064. It is concluded that the workload is a component of danger that affects not only the physical health but also the mental health of the workers, involving the quality of work carried out daily by the collaborators, who are the context of the study. Introduction.  Musculoskeletal disorders begin in their milder man, initially manifesting as an occasional pain, and can evolve towards a more serious and well-defined state. This pain can arise as a result of an excessive workload or serve as an indication of the beginning of a disease. This fact shows us that the musculoskeletal system injuries are having a considerable and increasing impact throughout the world, being the main cause of pain and disability. Objective. Establish what causes related to musculoskeletal disorders in workers in the construction area, Cuenca - Ecuador. Methodology.  It is of a quantitative type because data will be collected that will be processed by descriptive statistical techniques, which will allow the relationship between the study variables and understand what the causes of musculoskeletal disorders are in the construction workers. Results.  The results obtained from the research variables are statistically significant by being less than the p-value 0.05. The fact that it is within the promoting variable, it has a negative correlation of (- 0.353 *) obtained from the study conducted. Conclusion. The workload is a primary factor that generates stress in the workplace, and is closely linked to the type of work or professionery employees used, as well as at the level of physical, mental and temporary requirements necessary to carry out the tasks required in their respective jobs.

Introduction: Xerophthalmia (keratoconjunctivitis sicca) is revealed as the dryness of the conjunctiva in relation to the membrane that covers the eyelids, and that covers the white part of the eye, and the cornea, that is, the transparent layer in the front part of the iris and pupil. In this, the production of tears behaves insufficiently or evaporation too much, and corresponds to night or nutritional blindness, which can be recovered with vitamin replacement therapy, without reaching an invasive treatment. Methodology: In the sampling process conducted, the sample was selected as probabilistic, simple random. Results:  A series of patients were diagnosed in the canton of Portoviejo, in the province of Manabí, which led to the definition of the scientific problem to be treated in terms of the diagnostic study of xerophthalmia and nutritional blindness in a sample of patients from the canton of Portoviejo. Objectives: The general objective was to deepen the description, analysis, and treatment of patients with xerophthalmia and nutritional blindness in the canton of Portoviejo. Conclusions: A series of techniques were applied for the diagnosis and treatment process, which were reflected in at least four clinical cases. Of all those treated, vitamin A deficiencies are one of the determining causes of blindness and xerophthalmia. Consequently, vitamin A deficient states are distinguished from other causes, and is the reversibility of ocular clinical expressions following administration with a specified series of doses of vitamins. Along with iron and iodine deficiencies, vitamin A deficiencies are included in the so-called hidden hunger. General Area of Study: Medicine. Specific area of study: Optometry and Nutrition. Type of study: clinical cases.

Introduction. Beats originating in the atrioventricular (AV) node or His bundle characterize the nodal or junctional rhythm. Although rare in adults, it is related to multiple causes.    Objective. to describe the aspects related to the diagnosis and treatment of this pathology, in order to establish novel and instructive elements of the disease. Methodology. Case presentation and review of the updated literature, with emphasis on the description of possible related causes, treatment and care.  Results. 30-year-old woman, with a known history of tachyarrhythmia, who attends a follow-up visit. Clinical and echocardiographic evaluation were normal. Electrocardiography diagnosed nodal reentrant tachycardia plus idionodal rhythm, which was treated with Diltiazem. Conclusion. For an adequate clinical and therapeutic approach to these patients, it is possible to achieve a normal life. For this, a complete clinical history is indispensable. General area of study: medicine. Specific area of study: cardiology. Type of study: clinical cases.

Introduction. Currently in the United States there is a high mortality rate due to heart disease, with ventricular arrhythmias causing approximately 300,000 deaths per year due to ventricular tachycardia and ventricular fibrillation. The risk of ventricular tachycardia affects individuals according to their cardiac and genetic conditions, being fatal in patients with structural heart disease due to direct involvement of the myocardium. Objective. To identify the most important aspects of the clinical case of a patient with ventricular tachycardia in order to provide nursing care for the well-being and recovery of health.  Methodology. The clinical case study was descriptive and retrospective. The technique used for the collection of the information of the case will be through the review of clinical history and for the description of the pathology will be through the collection of articles extracted from recognized databases such as: Scopus, PorQuest, Pubmed, web of science, lilacs. Inclusion criteria: articles published in the last 5 years, in Spanish and English, attaching the patient's informed consent. Results. An 81-year-old male patient was referred to the cardiology outpatient clinic for cardiovascular evaluation. Personal History: Chronic ischemic heart disease, 2-vessel coronary artery disease treated with its 2 stent not requiring territories, Holter Holter monomorphic ventricular extrasystoles, isolated, bigeminy, in duplicate with 3 episodes of ventricular tachycardia. Conclusion.  Prolonged ventricular tachycardia can cause heart failure, left ventricular dysfunction and cardiomyopathy, situations that are reversed once the arrhythmias are resolved. Implantable cardioverter defibrillator (ICD) therapy has significantly decreased the risk of sudden cardiac death, but, on the other hand, has led to frequent ICD shocks as an emerging problem, which are associated with poor quality of life, frequent hospitalizations and increased mortality. General area of study: medicine. Specific area of study: cardiology. Type of study: Clinical cases.

Introduction. Premature ventricular contractions are extra beats that start in one of the two lower pumping chambers (ventricles) of the heart. This causes an alteration of the regular heart rhythm.  Objective. to analyze the treatment by applying a nursing care plan of premature ventricular contractions, through the exposition of a clinical case.  Methodology.  Descriptive, retrospective clinical case analysis. The technique used for the collection of information was through the review of clinical history and to support the theoretical context was supported by databases such as Web of science, ProQuest, Pubmed, Scopus.  Results.  The clinical case presents a 65-year-old male patient with sinus rhythm /F.C. 60 LPM / PR 160 MS/ QRS 100 S / QT 340 MS / EJE -20º. Altered left ventricular contractility, cardiac cavities of normal diameters, biventricular systolic function limit LVEF 50%, morphologically and functionally normal valvular apparatus. With diagnoses of isolated ventricular and supraventricular extrasystoles rhythm disorders. Conclusion. Premature ventricular contractions are extra beats that begin in one of the two lower pumping chambers (ventricles) of the heart. General area of study: medicine. Specific area of study: cardiology. Type of study: Clinical cases.

Introduction: Testicular cancer is a common neoplasm in young men aged between 15 and 40 years. It significantly affects a man's quality of life and reproductive function; however, it has a 90% cure rate and a 95% survival rate in those who are diagnosed early. Nevertheless, the clinical presentation is not specific and may only appear as painless unilateral swelling. For this reason, it is important to be aware of the risk factors for testicular cancer, which can range from age, syndromes, lifestyle, and environmental factors. Objective: Integrate updated knowledge on risk factors for testicular cancer. Methodology: A review of updated scientific literature was carried out between the period of 2019-2023. The search was performed using the terms: “risk factors for testicular cancer” “Testicular cancer” “Epidemiology of Testicular Cancer” “Etiology of Testicular Cancer”, in databases: Medscape, Clinical Practice Guidelines, PubMed, Cochrane. Results: Through the theoretical search it was possible to obtain updated information on the definition, etiology, epidemiology, the main risk factors, the symptoms, diagnosis, treatment, prognosis, and prevention measures in relation to testicular cancer. Conclusions: Testicular cancer, although rare, has a good prognosis with early diagnosis and treatment. Detection through self-examination and regular tests is crucial. General area of study: Medicine. Specific area of study: Urology. Type of study: Literature review article.