Characteristics of theses Characteristics of theses for physician graduation: a cross-sectional study in Peru

Introduction Research in Peru presents several barriers that impede its development and that also affects the theses to graduate as physician. Our objective was to characterize the theses for obtaining a medical degree in Peru. Methods An observational and descriptive study evaluating the theses for obtaining a medical degree of 2019, evaluated in January 2022 from 22 universities that are full members of the Peruvian Association of Faculties of Medicine. Characteristics of the universities and theses were evaluated, including the evaluation of a institutional research ethics committee , the aligment with a national research priority, and publication status in a scientific journal. The absolute and relative frequencies of the study variables were described. Results A total of 1838 theses were evaluated. Most of the theses were written by a single student (66.16%). The most common study design was the descriptive cross-sectional type (42.33%). We found that 53.86% of the theses responded to a national research priority, the most common being "maternal, perinatal and neonatal health" (26.01%). Of the total, 56.75% did not indicate whether they had the approval of an institutional research ethics committee. Only 40 theses (2.19%) were published in a scientific journal (14 in indexed journals). Conclusion Two-thirds of the theses conducted by medical students in Peru are descriptive studies. Half respond to national research priorities. Four out of ten theses were approved by an institutional research ethics committee. The number of published theses is low. The results show shortcomings in university institutional policies that encourage ethical compliance and research development

Análisis de la deformación axial en columnas de prototipo de vivienda rural construido con bambú en Bagua Chica, Perú

The UN Sustainable Development Goal 11 promotes the construction of resilient infrastructures. In this sense, the Amazon region is a producer of bamboo, which presents an opportunity to develop the use of this plant and achieve this goal, which is why this research has explored the mechanical properties of bamboo, for this purpose a prototype of a full-scale rural house has been designed and built to evaluate the axial behavior of the columns of this building against an additional permanent load of 0.40 kN/m. It has also been monitored with a mixed system: for temperature and humidity it has been used low cost calibrated sensors mounted on an open source electronic prototyping system that, through an embedded Wifi connection allowed sending the measurements to a database in the cloud; on the other hand, for displacement control it has been used calibrated mechanical comparators, their measurements were performed through a wireless video system. The results indicate that a maximum deformation of Ɛ= 8x10-5 has been reached and that the columns are still at 1.6% of the elastic limit which indicates a good performance and a high safety factor.El objetivo 11 del desarrollo sostenible ONU promueve la construcción de infraestructuras resilientes. En ese sentido, la región Amazonas es productoras de bambú, presenta una oportunidad para desarrollar el uso de esta planta y lograr dicho objetivo, es por ello que la presente investigación ha explorado las propiedades mecánicas del bambú, para ello se ha diseñado y construido un prototipo de vivienda rural a escala real para evaluar el comportamiento axial de las columnas, de esta edificación frente a una carga adicional permanente de 0.40 kN/m. También se ha monitorizado con un sistema mixto: para la temperatura y humedad se ha utilizado sensores de bajo costo calibrados montados sobre un sistema de prototipado electrónico de código abierto que, mediante una conexión Wifi incorporado permitió enviar las mediciones a una base de datos en la nube; por otra parte, para el control de los desplazamientos se ha utilizado comparadores mecánicos calibrados, sus mediciones se realizaron mediante un sistema de video inalámbrica. Los resultados indican que se ha alcanzado una deformación máxima de Ɛ= 8x10-5 y que las columnas aún se encuentran en el 1.6% del límite elástico lo que indica un buen desempeño y un alto factor de seguridad

Análise da deformação axial em colunas de protótipo de habitação rural construído com bambu em Bagua Chica, Peru

The UN Sustainable Development Goal 11 promotes the construction of resilient infrastructures. In this sense, the Amazon region is a producer of bamboo, which presents an opportunity to develop the use of this plant and achieve this goal, which is why this research has explored the mechanical properties of bamboo, for this purpose a prototype of a full-scale rural house has been designed and built to evaluate the axial behavior of the columns of this building against an additional permanent load of 0.40 kN/m. It has also been monitored with a mixed system: for temperature and humidity it has been used low cost calibrated sensors mounted on an open source electronic prototyping system that, through an embedded Wifi connection allowed sending the measurements to a database in the cloud; on the other hand, for displacement control it has been used calibrated mechanical comparators, their measurements were performed through a wireless video system. The results indicate that a maximum strain of e= 8x10-5 has been reached and that the columns are still at 1.6% of the elastic limit which indicates a good performance and a high safety factor.Peer ReviewedObjectius de Desenvolupament Sostenible::11 - Ciutats i Comunitats SosteniblesPostprint (published version

Caries Dental y Microbiota. Revisión

Cuando ocurre un desequilibrio en el balance de minerales en contacto con la superficie del esmalte dental y el balance es negativo hacia una pérdida de minerales se produce una degradación de la superficie y subsuperficie, este desequilibrio afecta al diente en su forma, función, sensibilidad y estética, esta alteración va a cambiar el status del microbioma. Investigaciones recientes sobre ADN y ARN relacionados a la lesión de caries han demostrado un ecosistema extraordinariamente diverso donde el conteo del Streptococo Mutans es sólo una muy pequeña fracción de la comunidad bacteriana hallada. Por lo tanto la dirección de prevención y/ó terapias específicas de caries dental no sólo deben estar enfocadas en el Streptococo Mutans porque se sabe que no están presentes en la primera colonización o inicio de la caries dental y se deben buscar estrategias dirigidas a la modulación de las interacciones entre microorganismos para poder tener una adecuada estrategia de prevención tomando como pilar principal a los microorganismos que inician la enfermedad.

Age-Related Effects of COVID-19 Pandemic on Mechanical Reperfusion and 30-Day Mortality for STEMI : Results of the ISACS-STEMI COVID-19 Registry

Background: The constraints in the management of patients with ST-segment elevation myocardial infarction (STEMI) during the COVID-19 pandemic have been suggested to have severely impacted mortality levels. The aim of the current analysis is to evaluate the age-related effects of the COVID-19 pandemic on mechanical reperfusion and 30-day mortality for STEMI within the registry ISACS-STEMI COVID-19. Methods: This retrospective multicenter registry was performed in high-volume PPCI centers on four continents and included STEMI patients undergoing PPCI in March–June 2019 and 2020. Patients were divided according to age (< or ≥75 years). The main outcomes were the incidence and timing of PPCI, (ischemia time longer than 12 h and door-to-balloon longer than 30 min), and in-hospital or 30-day mortality. Results: We included 16,683 patients undergoing PPCI in 109 centers. In 2020, during the pandemic, there was a significant reduction in PPCI as compared to 2019 (IRR 0.843 (95%-CI: 0.825–0.861, p < 0.0001). We found a significant agerelated reduction (7%, p = 0.015), with a larger effect on elderly than on younger patients. Furthermore, we observed significantly higher 30-day mortality during the pandemic period, especially among the elderly (13.6% vs. 17.9%, adjusted HR (95% CI) = 1.55 [1.24–1.93], p < 0.001) as compared to younger patients (4.8% vs. 5.7%; adjusted HR (95% CI) = 1.25 [1.05–1.49], p = 0.013), as a potential consequence of the significantly longer ischemia time observed during the pandemic. Conclusions: The COVID-19 pandemic had a significant impact on the treatment of patients with STEMI, with a 16% reduction in PPCI procedures, with a larger reduction and a longer delay to treatment among elderly patients, which may have contributed to increase in-hospital and 30-day mortality during the pandemic

Age-Related Effects of COVID-19 Pandemic on Mechanical Reperfusion and 30-Day Mortality for STEMI: Results of the ISACS-STEMI COVID-19 Registry

Background: The constraints in the management of patients with ST-segment elevation myocardial infarction (STEMI) during the COVID-19 pandemic have been suggested to have severely impacted mortality levels. The aim of the current analysis is to evaluate the age-related effects of the COVID-19 pandemic on mechanical reperfusion and 30-day mortality for STEMI within the registry ISACS-STEMI COVID-19. Methods: This retrospective multicenter registry was performed in high-volume PPCI centers on four continents and included STEMI patients undergoing PPCI in March-June 2019 and 2020. Patients were divided according to age (= 75 years). The main outcomes were the incidence and timing of PPCI, (ischemia time longer than 12 h and door-to-balloon longer than 30 min), and in-hospital or 30-day mortality. Results: We included 16,683 patients undergoing PPCI in 109 centers. In 2020, during the pandemic, there was a significant reduction in PPCI as compared to 2019 (IRR 0.843 (95%-CI: 0.825-0.861, p < 0.0001). We found a significant age-related reduction (7%, p = 0.015), with a larger effect on elderly than on younger patients. Furthermore, we observed significantly higher 30-day mortality during the pandemic period, especially among the elderly (13.6% vs. 17.9%, adjusted HR (95% CI) = 1.55 [1.24-1.93], p < 0.001) as compared to younger patients (4.8% vs. 5.7%; adjusted HR (95% CI) = 1.25 [1.05-1.49], p = 0.013), as a potential consequence of the significantly longer ischemia time observed during the pandemic. Conclusions: The COVID-19 pandemic had a significant impact on the treatment of patients with STEMI, with a 16% reduction in PPCI procedures, with a larger reduction and a longer delay to treatment among elderly patients, which may have contributed to increase in-hospital and 30-day mortality during the pandemic

Gender Difference in the Effects of COVID-19 Pandemic on Mechanical Reperfusion and 30-Day Mortality for STEMI: Results of the ISACS-STEMI COVID-19 Registry

Background. Several reports have demonstrated the impact of the COVID-19 pandemic on the management and outcome of patients with ST-segment elevation myocardial infarction (STEMI). The aim of the current analysis is to investigate the potential gender difference in the effects of the COVID-19 pandemic on mechanical reperfusion and 30-day mortality for STEMI patients within the ISACS-STEMI COVID-19 Registry. Methods. This retrospective multicenter registry was performed in high-volume primary percutaneous coronary intervention (PPCI) centers on four continents and included STEMI patients undergoing PPCIs in March–June 2019 and 2020. Patients were divided according to gender. The main outcomes were the incidence and timing of the PPCI, (ischemia time ≥ 12 h and door-to-balloon ≥ 30 min) and in-hospital or 30-day mortality. Results. We included 16683 STEMI patients undergoing PPCIs in 109 centers. In 2020 during the pandemic, there was a significant reduction in PPCIs compared to 2019 (IRR 0.843 (95% CI: 0.825–0.861, p < 0.0001). We did not find a significant gender difference in the effects of the COVID-19 pandemic on the numbers of STEMI patients, which were similarly reduced from 2019 to 2020 in both groups, or in the mortality rates. Compared to prepandemia, 30-day mortality was significantly higher during the pandemic period among female (12.1% vs. 8.7%; adjusted HR [95% CI] = 1.66 [1.31–2.11], p < 0.001) but not male patients (5.8% vs. 6.7%; adjusted HR [95% CI] = 1.14 [0.96–1.34], p = 0.12). Conclusions. The COVID-19 pandemic had a significant impact on the treatment of patients with STEMI, with a 16% reduction in PPCI procedures similarly observed in both genders. Furthermore, we observed significantly increased in-hospital and 30-day mortality rates during the pandemic only among females. Trial registration number: NCT 04412655

Impact of Smoking Status on Mortality in STEMI Patients Undergoing Mechanical Reperfusion for STEMI : Insights from the ISACS–STEMI COVID-19 Registry

The so-called “smoking paradox”, conditioning lower mortality in smokers among STEMI patients, has seldom been addressed in the settings of modern primary PCI protocols. The ISACS– STEMI COVID-19 is a large-scale retrospective multicenter registry addressing in-hospital mortality, reperfusion, and 30-day mortality among primary PCI patients in the era of the COVID-19 pandemic. Among the 16,083 STEMI patients, 6819 (42.3%) patients were active smokers, 2099 (13.1%) previous smokers, and 7165 (44.6%) non-smokers. Despite the impaired preprocedural recanalization (p < 0.001), active smokers had a significantly better postprocedural TIMI flow compared with nonsmokers (p < 0.001); this was confirmed after adjustment for all baseline and procedural confounders, and the propensity score. Active smokers had a significantly lower in-hospital (p < 0.001) and 30-day (p < 0.001) mortality compared with non-smokers and previous smokers; this was confirmed after adjustment for all baseline and procedural confounders, and the propensity score. In conclusion, in our population, active smoking was significantly associated with improved epicardial recanalization and lower in-hospital and 30-day mortality compared with previous and non-smoking histor

Results of the ISACS-STEMI COVID-19 Registry

Publisher Copyright: © 2023 by the authors.Background. Several reports have demonstrated the impact of the COVID-19 pandemic on the management and outcome of patients with ST-segment elevation myocardial infarction (STEMI). The aim of the current analysis is to investigate the potential gender difference in the effects of the COVID-19 pandemic on mechanical reperfusion and 30-day mortality for STEMI patients within the ISACS-STEMI COVID-19 Registry. Methods. This retrospective multicenter registry was performed in high-volume primary percutaneous coronary intervention (PPCI) centers on four continents and included STEMI patients undergoing PPCIs in March–June 2019 and 2020. Patients were divided according to gender. The main outcomes were the incidence and timing of the PPCI, (ischemia time ≥ 12 h and door-to-balloon ≥ 30 min) and in-hospital or 30-day mortality. Results. We included 16683 STEMI patients undergoing PPCIs in 109 centers. In 2020 during the pandemic, there was a significant reduction in PPCIs compared to 2019 (IRR 0.843 (95% CI: 0.825–0.861, p < 0.0001). We did not find a significant gender difference in the effects of the COVID-19 pandemic on the numbers of STEMI patients, which were similarly reduced from 2019 to 2020 in both groups, or in the mortality rates. Compared to prepandemia, 30-day mortality was significantly higher during the pandemic period among female (12.1% vs. 8.7%; adjusted HR [95% CI] = 1.66 [1.31–2.11], p < 0.001) but not male patients (5.8% vs. 6.7%; adjusted HR [95% CI] = 1.14 [0.96–1.34], p = 0.12). Conclusions. The COVID-19 pandemic had a significant impact on the treatment of patients with STEMI, with a 16% reduction in PPCI procedures similarly observed in both genders. Furthermore, we observed significantly increased in-hospital and 30-day mortality rates during the pandemic only among females. Trial registration number: NCT 04412655.publishersversionpublishe

Impact of chronic obstructive pulmonary disease on short-term outcome in patients with ST-elevation myocardial infarction during COVID-19 pandemic: insights from the international multicenter ISACS-STEMI registry

Background Chronic obstructive pulmonary disease (COPD) is projected to become the third cause of mortality worldwide. COPD shares several pathophysiological mechanisms with cardiovascular disease, especially atherosclerosis. However, no definite answers are available on the prognostic role of COPD in the setting of ST elevation myocardial infarction (STEMI), especially during COVID-19 pandemic, among patients undergoing primary angioplasty, that is therefore the aim of the current study. Methods In the ISACS-STEMI COVID-19 registry we included retrospectively patients with STEMI treated with primary percutaneous coronary intervention (PCI) between March and June of 2019 and 2020 from 109 high-volume primary PCI centers in 4 continents. Results A total of 15,686 patients were included in this analysis. Of them, 810 (5.2%) subjects had a COPD diagnosis. They were more often elderly and with a more pronounced cardiovascular risk profile. No preminent procedural dissimilarities were noticed except for a lower proportion of dual antiplatelet therapy at discharge among COPD patients (98.9% vs. 98.1%, P = 0.038). With regards to short-term fatal outcomes, both in-hospital and 30-days mortality occurred more frequently among COPD patients, similarly in pre-COVID-19 and COVID-19 era. However, after adjustment for main baseline differences, COPD did not result as independent predictor for in-hospital death (adjusted OR [95% CI] = 0.913[0.658-1.266], P = 0.585) nor for 30-days mortality (adjusted OR [95% CI] = 0.850 [0.620-1.164], P = 0.310). No significant differences were detected in terms of SARS-CoV-2 positivity between the two groups. Conclusion This is one of the largest studies investigating characteristics and outcome of COPD patients with STEMI undergoing primary angioplasty, especially during COVID pandemic. COPD was associated with significantly higher rates of in-hospital and 30-days mortality. However, this association disappeared after adjustment for baseline characteristics. Furthermore, COPD did not significantly affect SARS-CoV-2 positivity. Trial registration number: NCT 04412655 (2nd June 2020)