Barreras y facilitadores en la implementación de un sistema de tele-triaje para la identificación remota de casos sospechosos de COVID-19 por estudiantes voluntarios / Barriers and facilitators in the implementation of a tele-triage system for remote identification of suspected COVID-19 cases by student volunteers

Resumen Introducción. En el Perú el sistema de tele-triaje (STT) conducido por estudiantes voluntarios permitió la identificación remota de casos sospechosos de COVID-19. Sin embargo, aun no se conocen las barreras y facilitadores de su implementación. Objetivos. Describir las barreras y facilitadores sobre la implementación de un sistema de tele-triaje para la identificación de casos sospechosos de COVID-19 en el Perú. Métodos. Se desarrolló un estudio de métodos mixtos que describió las características de los usuarios que participaron en el STT (cuantitativo). También se exploró las percepciones de usuarios y voluntarios respecto a las barreras y facilitadores sobre la implementación de este servicio (cualitativo). Resultados. Entre los 4317 usuarios evaluados por el STT, la edad media fue 36,2 años (desviación estándar: 13,2), 58,6% fueron mujeres y solo el 41,4% fueron clasificados como casos sospechosos de COVID-19. Los voluntarios destacaron que su participación fue facilitada por su disponibilidad de tiempo y deseos de ayudar, aunque señalaron problemas de organización y falta de equipos disponibles para las llamadas. Los usuarios valoraron el apoyo emocional y la claridad de la información brindada, pero expresaron desconfianza sobre la evaluación de COVID-19 de forma remota, y un conocimiento limitado sobre el rol de los voluntarios. Conclusiones. El STT conducido por estudiantes voluntarios pemitió la identificación de casos sospechosos de COVID-19 en el Perú, además sirvió como medio para compartir información. Sin embargo, aspectos de desorganización y desconocimiento por parte de los usuarios fueron percibidos como barreras para su implementación.

ABSTRACT Introduction. In Peru, the tele-triage system (TTS) led by volunteer students allowed for the remote identification of suspected COVID-19 cases. However, the barriers and facilitators of its implementation are still unknown. Objectives. To describe the barriers and facilitators regarding the implementation of a tele-triage system for the identification of suspected COVID-19 cases in Peru. Methods. A mixed methods study was developed that described the characteristics of the users who participated in the TTS (quantitative). It also explored the perceptions of users and volunteers regarding the barriers and facilitators of implementing this service (qualitative). Results. Among the 4,317 users evaluated by the TTS, the average age was 36.2 years (standard deviation: 13.2), 58.6% were women, and only 41.4% were classified as suspected cases of COVID-19. Volunteers highlighted that their participation was facilitated by their availability of time and desire to help, although they noted problems with organization and a lack of equipment available for calls. Users valued the emotional support and clarity of the information provided but expressed mistrust about the remote COVID-19 assessment, and a limited understanding of the volunteers' role. Conclusions. The TTS led by volunteer students allowed for the identification of suspected COVID-19 cases in Peru, and also served as a means to share information. However, aspects of disorganization and a lack of knowledge on the part of users were perceived as barriers to its implementation.

Ultrasonografía del diámetro de la vaina del nervio óptico en voluntarios sanos

Fundamento: La ultrasonografía del diámetro de la vaina del nervio óptico ha sido utilizada como medidor no invasivo de la presión intracraneal. Una de las deficiencias enunciadas resulta, la no existencia de un valor estándar, que sugiera el límite entre la normalidad y la hipertensión intracraneal. Objetivo: Determinar el diámetro de la vaina del nervio óptico mediante ecografía en voluntarios sanos. Métodos: Se realizó un estudio ecológico de poblaciones múltiples en 160 voluntarios sanos que cumplieron con los criterios de inclusión. Se realizaron 3 mediciones ultrasonográficas en modo B en cada ojo, se tomó como valor final el promedio. Las variables estudiadas fueron: edad, sexo, color de la piel y diámetro de la vaina del nervio óptico. Se calculó el porcentaje, media, mediana, límite y estándar. Con un valor de referencia al 95 % del intervalo de confianza. La relación entre las variables se determinó mediante análisis de regresión logística simple con el paquete estadístico de SPSS 22.0. Resultados: El diámetro de la vaina del nervio óptico, en los sujetos, se cuantificó entre 4,62 - 4,80 mm y 4,66 - 4,83 mm para los ojos derecho e izquierdo respectivamente. Al análisis de regresión lineal simple, solo el sexo se asoció al valor del diámetro de la vaina del nervio óptico (p= 0,000). Conclusiones: En una población de voluntarios sanos el valor del diámetro de la vaina del nervio óptico fue similar a otras descripciones, con diferencias entre el sexo, lo cual sugiere tomar en consideración esta variable al hacer la medición.

Foundation: Ultrasonography of the diameter of the optic nerve sheath has been used as a non-invasive measure of intracranial pressure. One of the deficiencies stated is the non-existence of a standard value that suggests the limit between normality and intracranial hypertension. Objective: Determine the diameter of the optic nerve sheath using ultrasound in healthy volunteers. Methods: A multi-population ecological study was conducted on 160 healthy volunteers who met the inclusion criteria. Three ultrasonographic measurements were performed in B mode in each eye, the average was taken as the final value. The variables studied were: age, sex, skin color and diameter of the optic nerve sheath. The percentage, mean, median, limit and standard were calculated. With a reference value at the 95% confidence interval. The relationship between the variables was determined by simple logistic regression analysis with the SPSS 22.0 statistical package. Results: That diameter of the optic nerve sheath, in the subjects, was quantified between 4.62 - 4.80 mm and 4.66 - 4.83 mm for the right and left eyes respectively. In the simple linear regression analysis, only sex was associated with the value of the diameter of the optic nerve sheath (p= 0.000). Conclusions: In a population of healthy volunteers, the value of the diameter of the optic nerve sheath was similar to other descriptions, with differences between sex, which suggests taking this variable into consideration when making the measurement.

A descriptive study on motivations for entering and remaining, exiting community-based tuberculosis care among volunteers in Yangon, Myanmar / 国際保健医療

Background   Since the Alma Ata Declaration in 1978, Community Health Volunteers (CHVs) have become critical assets to assist tuberculosis (TB) control programs in low and middle-income countries, such as in case finding and treatment support activities. Yet community-based tuberculosis control programs (CBTBC) are faced with numerous challenges, including recruitment and retaining of CHVs. While the possible effect of financial incentives has been extensively discussed, other motivational factors have received less attention. Objective   This study sought to explore on potential motivations for entering, remaining, and exiting volunteer work among CHVs working in a CBTBC project run by an NGO, Japan Anti-Tuberculosis Association (JATA), in urban townships of Yangon, Myanmar.Methods   A semi-structured questionnaire was administered to CHVs who were working for a JATA CBTBC project in Yangon, Myanmar. The questionnaire consisted of closed- and open-ended questions asking about demographic characteristics, their experiences, and their motivations for entering, remaining and exiting volunteer work. Functional theory of motivation was used as a conceptual framework for analysis.Results   A total of 69 volunteers participated in the survey, representing 69% of all CHVs for JATA CBTBC (69/100). From the questionnaire, we found that altruism, self-empowerment, and psychological job satisfaction mainly influenced CHVs’ motivation to enter and remain in volunteer work. Expectations for financial incentives were less important. Being busy with housework and other work priorities could motivate them to temporarily exist volunteer work, while ill-health and old age potentially triggered permanent exit. Conclusions   CHVs working in JATA CBTBC were motivated mainly by altruism, self-empowerment, and psychological job satisfaction - however, their volunteer work must be systematically supported so as to avoid unnecessary burden on CHVs. Further qualitative study would extend the evidences of the potential factors which might contribute to sustaining CHV participation.

Community health volunteers’ performance in rural areas of Yemen: a community-based satisfaction survey / Journal of Rural Medicine

Objectives: Many developing countries utilize the services of community health volunteers (CHVs) to enhance healthcare services in underserved regions. Evaluating client satisfaction with CHVs’ performance is crucial for ensuring the effective utilization of their services. This study aims to assess clients’ satisfaction with the provision of basic reproductive health services by CHVs in the governorates of Ibb and Al Mahweet, Yemen.Materials and Methods: A cross-sectional study was conducted, collecting data via structured questionnaires administered by trained data collectors to clients of CHVs. A total of 510 households were interviewed, with 255 from each governorate, distributed across 30 clusters (villages). Each governorate comprised 15 clusters in 12 districts (six districts in Ibb and five in Al Mahweet, excluding one district for security reasons). Within each cluster, 17 households were randomly selected for interviews. Descriptive analysis was performed using the SPSS version 22.Results: The majority of the clients were female (84.7%), most were aged 20–39 years (55.7%), and more than half of them had received at least primary education (54.2%). The study findings indicate that a significant proportion of respondents were highly satisfied with CHVs’ performance (93%). Almost all respondents confirmed that CHVs resided in their villages (94%) and were easily accessible for consultation (99%). Most of the respondents (97%) expressed trust in the CHVs, stating that they were helpful to all villagers and treated them well. Additionally, nearly all the respondents reported easy access to services (98.6%), although a considerable percentage experienced a gap of three months or more since their last interaction with a CHV (39.1%).Conclusion: The CHVs contribute to the well-being of the rural populations in Yemen by delivering satisfactory services, particularly regarding family planning. However, ensuring the sustainability of the CHV programs remains a challenge, which requires attention from the program managers and decision makers in the Yemeni healthcare sector.

Exploration and Analysis of Volunteers’ Participation in Hospice Care Service Mode from the Perspective of Multiple Mutual Aid / 中国医学伦理学

In an aging society, the coexistence of multiple diseases among the elderly is prominent, and the prevalence of malignant tumors continues to rise.It has positive practical significance that improving the quality of life of dying patients and developing hospice care. Based on welfare multivariate theory, volunteers joining the hospice care team is conducive to the diversified development of the hospice care. By carrying out voluntary services and giving dignity to the dying, the quality of death can be improved and social support can be reflected. Based on the theory of mutual aid, volunteer participation in hospice care services is conducive to promoting the improvement of social spiritual civilization and achieving a virtuous cycle of intergenerational mutual aid. The mode of volunteer participation in hospice care service is still being gradually explored. This paper aimed to propose that the government introduces relevant voluntary service policies to build a good social atmosphere; based on the knowledge, belief and practice model, carry out education and training for volunteers and promote the overall coordinated development of the service team; put forward suggestions on improving the volunteer service mechanism by reaching confidentiality agreements, and improving the willingness of the dying and their families to accept volunteer services, so as to provide reference for the sustainable development of hospice care.

Relationship of vitamin D with the anthropometric indicators and lifestyle of adults. Medellín. Colombia

Introduction: Serum vitamin D levels depend on sunlight, diet, and other factors. Objective: We aimed to determine serum vitamin D levels and evaluate their relationship with anthropometric indicators and lifestyle habits in apparently healthy volunteers. Materials and Methods: In this cross-sectional study (n=75), socio-demographic, anthropometric, and lifestyle habit-related data were collected. Serum vitamin D levels were determined with high performance liquid chromatography, food intake was measured by semiquantitative frequency and nutritional status was assessed by anthropometry. Chi-square test and also principal component analysis were used to analyze the relationship between some variables and vitamin D status. Spearman's test was used to determine correlations between quantitative variables. Results: 73% were women and 61% belonged to medium socio-economic level. Median vitamin D intake was 137 (83.1­227.3) IU/day. Based on body mass index (BMI), 44% individuals had overweight/obesity. The 68% exhibited deficient/insufficient vitamin D levels (Hypovitaminosis D). BMI classification and waist circumference (CW) were not related with vitamin D status; however, activities with higher sun exposure were highly related (p = 0.013). Sun exposure time explained variation in component 2 (16.60%), where most of the individuals with normal level were grouped. Sun exposure time was positively correlated with vitamin D status (r = 0.263; p = 0.023). Discussion: Excess weight and abdominal obesity are not always associated with hypovitaminosis D. Conclusions: The majority of individuals showed hypovitaminosis D but their status was not related with anthropometric indicators. A Sun exposure time was the only factor positively correlated with vitamin D status.

Introducción: Los niveles séricos de vitamina D dependen de la luz solar, la dieta y otros factores. Objetivo: Nuestro objetivo fue determinar los niveles séricos de vitamina D y evaluar su relación con indicadores antropométricos y estilos de vida en voluntarios aparentemente sanos. Materiales y métodos: En este estudio trasversal (n=75) se recogieron datos sociodemográficos, antropométricos y aquellos relacionados con hábitos y estilos de vida. La vitamina D se determinó por cromatografía liquida de alta eficiencia; la ingesta de alimentos, mediante frecuencia semicuantitativa, y el estado nutricional por antropometría. Para analizar la relación entre algunas variables y el estado de la vitamina D se usó la prueba de Chi cuadrado y también el análisis de componentes principales. Se empleó la prueba de Spearman para determinar la correlación entre variables cuantitativas. Resultados: El 73% eran mujeres y el 61% pertenecían a un estrato socioeconómico medio. La mediana de la ingesta de vitamina D fue de 137 (83,1­227,3) UI/día. Según el índice de masa corporal (IMC), el 44% de los individuos tenían sobrepeso/obesidad. El 68% mostro deficiencia/insuficiencia de vitamina D (hipovitaminosis D). La clasificación del IMC y la circunferencia abdominal no se relacionaron con el estado de la vitamina D; sin embargo, las actividades con una mayor exposición solar estuvieron altamente relacionadas (p=0,013). El tiempo de exposición solar explico la variación en el componente 2 (16,60%) donde se agruparon la mayoría de los individuos con niveles normales. El tiempo de exposición solar tuvo una correlación positiva con el estado de la vitamina D (r = 0,263; p = 0,023). Discusión: El exceso de peso y la obesidad abdominal no siempre se relacionan con la hipovitaminosis D. Conclusiones: La mayoría de los individuos presentaron hipovitaminosis D, pero su estado no se relacionó con los indicadores antropométricos. El tiempo de exposición al sol fue el único factor que se correlaciono positivamente con el estado de la vitamina D.

Introdução: Os níveis séricos de vitamina D dependem da luz solar, da dieta e de outros fatores. Objetivo: Nosso objetivo foi determinar os níveis séricos de vitamina D e avaliar sua relação com indicadores antropométricos e hábitos de vida em voluntários aparentemente saudáveis. Materiais e métodos: Neste estudo transversal (n=75), foram coletados dados sociodemográficos, antropométricos e relacionados a hábitos de vida. Os níveis séricos de vitamina D foram determinados por cromatografia liquida de alto desempenho, a ingestão de alimentos foi medida por frequência semiquantitativa e o estado nutricional foi avaliado por antropometria. O teste do qui-quadrado e a análise de componentes principais foram utilizados para analisar a relação entre algumas variáveis e o estado da vitamina D. O teste de Spearman foi usado para determinar as correlações entre as variáveis quantitativas. Resultados: 73% eram mulheres e 61% pertenciam a um nível socioeconômico médio. A ingestão media de vitamina D foi de 137 (83,1-227,3) UI/dia. Com base no índice de massa corporal (IMC), 44% dos indivíduos tinham sobrepeso/obesidade. Os 68% apresentaram níveis deficientes/insuficientes de vitamina D (hipovitaminose D). A classificação do IMC e a circunferência da cintura (CW) não foram relacionadas ao status da vitamina D; entretanto, as atividades com maior exposição ao sol foram altamente relacionadas (p = 0,013). O tempo de exposição ao sol explicou a variação no componente 2 (16,60%), onde a maioria dos indivíduos com nível normal foi agrupada. O tempo de exposição ao sol foi positivamente correlacionado com o status de vitamina D (r = 0,263; p = 0,023). Discussão: O excesso de peso e a obesidade abdominal nem sempre estão associados com a hipovitaminose D. Conclusões: A maioria dos indivíduos apresentou hipovitaminose D, mas seu status não foi relacionado com indicadores antropométricos. O tempo de exposição ao sol foi o único fator positivamente correlacionado com o status da vitamina D.

Consideraciones bioéticas sobre los incentivos a participantes voluntarios sanos en investigaciones Fase I

Los ensayos clínicos en Fase I se realzan con la participación de voluntarios sanos de prueban la seguridad y tolerabilidad de los productos farmacéuticos en investigación. En ellos, los participantes están expuestos a riesgos de medicamentos del estudio sin la posibilidad de un beneficio médico directo y, por lo general, deben pasar días o semanas en un centro de investigación. Los incentivos, como pagos monetarios se utilizan para incentivar la inscripción y compensar a los participantes por su tiempo. Estas características de los ensayos voluntarios sanos de fase I crean un contexto de investigación que difiere notablemente de la mayoría de las otras investigaciones clínicas, pues la mayoría de ellos son personas vulnerables económicamente. Este artículo presenta el objetivo de analizar factores bioéticos que inciden en el otorgamiento de incentivos a participantes voluntarios sanos en investigaciones Fase I.

Phase I Clinical Trials are conducted with the participation of healthy volunteers to test the safety and tolerability of pharmaceutical products. In them, participants are exposed to study drug risks without the possibility of direct medical benefit and usually must spend days or weeks at a research site. Incentives such as monetary payments are used to encourage enrollment and compensate participants for their time. These characteristics of Phase I healthy volunteer trials create a research context that differs markedly from most other clinical research, as most of them are financially vulnerable individuals. This paper aims to analyze bioethical factors that influence the granting of incentives to healthy volunteer participants in Phase I research.

Representaciones gráficas de la salud: una mirada desde los niños y niñas en desplazamiento en Medellín / Graphic Representations of Health: a Look From the Children in forced displacement in Medellín

(Figura 1) La imagen de la portada de la edición especial de pediatría hace parte de una experiencia de voluntariado social que realizo como pediatra en formación en la Fundación Posada de Moisés, una institución sin ánimo de lucro, creada en la ciudad de Medellín hace 21 años, con el objetivo social de prestar servicios de desarrollo integral a niñas, niños y adolescentes víctimas del desplazamiento forzado en Colombia, sin distinción de raza, procedencia o situación económica, generando impacto en más de 200 niños desde su creación, abarcando componentes académicos, psicológicos, alimentarios, pero el más importante la integración social por medio del amor y apoyo constante.

(Figure 1) The image on the cover of the Pediatrics special edition is part of a social volunteering experience that I carried out as a Pediatrics Resident at the Posada de Moisés Foundation, a non-profit institution, created in Medellín 21 years ago, with the social objective of providing integral development services to children and adolescents who are victims of forced displacement in Colombia, without distinction of race, origin or economic situation, generating an impact on more than 200 children since its creation, in academic, psychological, food scopes, but most important, in social integration through love and constant support.

Effects of hyperbaric pressure on the oxidative stress status in healthy subjects

Introduction: In the hyperbaric pressure environment the partial pressure of each gas component increases, which increases oxygen partial pressure. This causes the generation of free radicals and oxidative stress. Objective: To determine the effects of hyperbaric pressure on the oxidative stress status in healthy subjects. Methods: 29 healthy men performed standardized hyperbaric chamber dive to a depth of 30 meters of water (msw) for 30 minutes. Blood samples were collected before compression, immediately after decompression and 1 hour after decompression. The levels of Malondialdehyde, Catalase and Superoxide Dismutase were measured in blood samples. Results: Malondialdehyde activity increased immediately after decompression and recovered at 1 hour after decompression. Superoxide Dismutase enzyme activity decreased immediately after decompression as well as 1 hour after decompression. Catalase enzyme activity increased immediately after decompression, which was significant at 1 hour after decompression. Conclusion: Changes in the biological markers Malondialdehyde, Catalase and Superoxide Dismutase suggest the appearance of oxidative stress under the influence of a hyperbaric pressure environment.

Introducción: En la condición de presión hiperbárica, la presión parcial de los componentes del aire se encuentra aumentada, incluida la del oxígeno. Esto se considera la causa de formación de radicales libres y el estado de estrés oxidativo. Objetivo: Determinar los efectos de la presión hiperbárica sobre estado del estrés oxidativo en individuos sanos. Métodos: 29 hombres sanos realizaron buceo estandarizado en cámara hiperbárica, a una profundidad de 30 metros de agua, durante un tiempo total de 30 minutos. Se recogieron muestras de sangre antes de la compresión, inmediatamente después de la descompresión y una hora después. Se midieron los niveles de malondialdehído, catalasa y superóxido dismutasa en muestras de sangre. Resultados: La acción del malondialdehído se incrementó inmediatamente después del buceo y se recuperó en 1 hora. La acción de enzima superóxido dismutasa se encontró disminuida al término y 1 hora después, mientras la enzima catalasa se demostró lo contrario y aumentó significativamente en la primera hora. Conclusión: El cambio de los marcadores biológicos malondialdehído, catalasa y superóxido dismutasa sugiere estado de estrés oxidativo bajo la influencia de presión hiperbárica.

Does the Number of Stimuli Influence the Formation of the Endogenous Components of the Event-Related Auditory Evoked Potentials?

Abstract Introduction The number of stimuli is important to determine the quality of auditory evoked potential records. However, there is no consensus on that number in studies, especially in the sample studied. Objectives To investigate the influence of the number of rare stimuli on forming N2 and P3 components, with different types of acoustic stimuli. Methods Cross-sectional, descriptive, comparative study, approved by the ethics committee of the institution. The sample comprised 20 normal hearing adults of both sexes, aged 18 to 29 years old, with normal scores in the mental state examination and auditory processing skills. The event-related auditory evoked potentials were performed with nonverbal (1 kHz versus 2 kHz) and verbal stimuli (/BA/ versus /DA/). The number of rare stimuli varied randomly in the recordings, with 10, 20, 30, 40, and 50 presentations. Results P3 latency was significantly higher for nonverbal stimuli with 50 rare stimuli. N2 latency did not show any difference between the type and number of stimuli. The absolute P3 and N2-P3 amplitudes showed significant differences for both types of stimuli, with higher amplitude for 10 rare stimuli, in contrast with the other ones. The linear tendency test indicated significance only for the amplitude - as the number of rare stimuli increased, the amplitude tended to decrease. Conclusion The components were identifiable in the different numbers of rare stimuli and types of stimuli. The P3 and N2-P3 latency and amplitude increased with fewer verbal and nonverbal stimuli. Recording protocols must consider the number of rare stimuli.

Medidas de efeito das intervenções em vozes saudáveis: uma revisão de escopo / Measurements of the effect of interventions on heathly voices: a scope review

RESUMO Objetivo mapear as medidas de avaliação vocal utilizadas para verificar o efeito da intervenção em indivíduos vocalmente saudáveis. Estratégia de pesquisa trata-se de uma revisão de escopo baseada na questão de pesquisa: "Quais as medidas de avaliação vocal utilizadas para verificar o efeito da intervenção em indivíduos vocalmente saudáveis?" A busca foi realizada de forma eletrônica nas bases de dados MEDLINE (PubMed), LILACS (BVS), Scopus (Elsevier), Web of Science (Clarivate), Embase e Cochrane. Critérios de seleção a seleção dos estudos foi baseada na leitura dos títulos, resumos, palavras-chave e textos completos, aplicando-se os critérios de elegibilidade. Foram extraídos os dados relacionados às informações bibliográficas da publicação, características da amostra e da intervenção, os efeitos da intervenção nas medidas de autoavaliação, perceptivo-auditivas, acústicas, aerodinâmicas, eletroglotográficas, resultado do exame laríngeo, entre outros. Os dados foram resumidos e apresentados de forma quantitativa e descritiva. Resultados foram selecionados 97 artigos, entre os 979 estudos mapeados nesta revisão. A análise acústica foi a medida mais utilizada (n=70, 72,3%) para verificar os efeitos do treinamento vocal nos estudos selecionados, seguida pela eletroglotografia (n= 55, 56,7%), autoavaliação (n= 38, 39,2%), aerodinâmica (n= 33, 34,0%), julgamento perceptivo-auditivo (n= 22, 22,7%) e exame laríngeo (n= 16, 16,5%). Conclusão a análise acústica é a medida utilizada na maioria dos estudos para verificar o efeito da intervenção em indivíduos vocalmente saudáveis.

ABSTRACT Purpose to map the vocal assessment measures used to verify the effect of the intervention in vocally healthy individuals. Research strategy This is a scope review based on the research question: What vocal assessment measures are used to verify the effect of the intervention in vocally healthy individuals? The search was carried out electronically in MEDLINE (PubMed), LILACS (BVS), Scopus (Elsevier), Web of Science (Clarivate), Embase and Cochrane databases. Selection criteria The selection of studies was based on reading the titles, abstracts, keywords and full texts, applying the eligibility criteria. Data related to the publication's bibliographic information, sample and intervention characteristics, the effects of the intervention on self-assessment, auditory-perceptual, acoustic, aerodynamic, electroglottographic measures, laryngeal examination results, among others, were extracted. The data were summarized and presented in a quantitative and descriptive way. Results 97 articles were selected, among the 979 studies mapped in this review. Acoustic analysis was the most used measure (n=70, 72.3%) to verify the effects of vocal training in the selected studies, followed by electroglottography (n= 55, 56.7%), self-assessment (n= 38, 39 .2%), aerodynamics (n= 33, 34.0%), auditory-perceptual judgment (n= 22, 22.7%) and laryngeal examination (n= 16, 16.5%). Conclusion Acoustic analysis is the measure used in most studies to verify the effect of the intervention in vocally healthy individuals.

Gastric emptying in patients with cholelithiasis and in patients following cholecystectomy: measurement by ultrasonography / 中华麻醉学杂志

Objective:To evaluate the gastric emptying in the patients with cholelithiasis and in the patients following cholecystectomy by ultrasonography.Methods:Thirty patients with cholelithiasis, 30 post-cholecystectomy patients and 30 healthy volunteers, of either sex, aged 18-64 yr, with body mass index of 18-30 kg/m 2, of American Society of Anesthesiologists Physical Status classification Ⅰor Ⅱ, were selected and divided into cholelithiasis group (group CH), post-cholecystectomy group (group PC) and healthy volunteer group (group HV). The indigestion scores of the enrolled subjects in the past 3 months were assessed; the subjects took a semi-solid test meal (300 kcal) in the fasting state, and the cross-sectional area (CSA) of the gastric sinus was measured using ultrasound at fasting (T 0) and 5, 15, 30, 45, 60, 90 and 120 min after the test meal was taken (T 1-7). The gastric emptying fraction at T 5, 6 was calculated. The gastric half-emptying time and remaining area of the gastric sinus at T 7 were also calculated. Results:Compared with group HV, dyspepsia scores were significantly increased within the past 3 months ( P<0.05), the CSA of the gastric sinus was increased at T 3-7, the gastric emptying fraction was decreased at T 5-6, the gastric half-emptying time was prolonged, and the remaining area of the gastric sinus was increased at T 7 in group CH and group PC ( P<0.05). Compared with group CH, the CSA of the gastric sinus was significantly increased at T 4-7, the gastric emptying fraction was decreased at T 5, 6, the gastric half-emptying time was prolonged, and the remaining area of the gastric sinus was increased at T 7 in group PC ( P<0.05). Conclusions:Gastric emptying time is longer in the patients with cholelithiasis and in the patients following cholecystectomy than in healthy subjects and is further prolonged after cholecystectomy in the patients.

Construction of training program system for hospice care volunteers / 中国实用护理杂志

Objective:To construct the training program system for hospice care volunteers and provide reference for the training of hospice care volunteers in China.Methods:The training program system for hospice care volunteers was initially determined by using the method of literature analysis and investigation, and 16 experts were consulted by two rounds of letters using the method of expert inquiry from May to July 2022, and finally the training program system was established.Results:The effective recovery rate of the two rounds of expert consultation questionnaire was 100%, the expert authority coefficient was 0.88, and the Kendall coordination coefficient was 0.141, 0.131 (both P<0.05). The final training program system for hospice care volunteers contained 7 first-class indicators including training objectives, training objects, training contents, training methods, training hours, training resources and training evaluation, 27 second-class indicators and 92 third-class indicators. Conclusions:The training program system for hospice care volunteers constructed in this study has high reliability and scientificity, and has a good guiding role and reference value for the training of hospice care volunteers.

Review of Research on Volunteer Action Ethics in Public Health Emergencies / 中国医学伦理学

【Objective:】 To summarize the research status, problems and countermeasures of ethical issues related to volunteer action in public health emergencies by reviewing relevant literature. 【Methods:】 Using four keywords: public health emergencies, volunteers, ethics, and research, this paper searched the Chinese and English databases for the literature published from December 2006 to December 2021 (15 years in total) on "ethical research on volunteer action in public health emergencies". After searching, it was found that there were not many related papers. A total of 31 papers were retrieved, and only 23 papers were selected. 【Results:】 The ethical problems faced by volunteers in public health emergencies were complex and diverse, and the individual ethical behavior of volunteers was affected by many factors. The strategies to solve the relevant ethical issues were not yet perfect. 【Conclusions:】 The ethical issues related to volunteer actions in public health emergencies needed to be further studied.

Contribución de la Facultad de Biología de la Universidad de La Habana en el diagnóstico molecular del SARS-CoV-2 en el IPK / Contribution of the School of Biology of the University of Havana in the molecular diagnosis of SARS-CoV-2 at IPK

RESUMEN A finales del año 2019 el mundo conoció de la existencia y propagación de un nuevo coronavirus denominado SARS-CoV-2, capaz de provocar la enfermedad COVID-19. Las autoridades gubernamentales y de salud cubanas trazaron desde el principio estrategias de control epidemiológico, y fue el diagnóstico molecular por PCR en tiempo real una tarea de suma importancia para el control de la enfermedad en nuestro país. Un gran número de jóvenes profesionales y estudiantes de la Facultad de Biología de la Universidad de La Habana se sumaron a esta tarea. El presente trabajo aborda las principales actividades desarrolladas por estos últimos durante el diagnóstico molecular del SARS-CoV-2 en el Instituto de Medicina Tropical Pedro Kourí (IPK) en los primeros meses de la pandemia en nuestro país. El ejercicio de la profesión a partir de la puesta en práctica de habilidades y conocimientos teórico-prácticos, la adquisición de nuevos conocimientos, así como el fomento de valores éticos y morales como la solidaridad, el compañerismo y el trabajo mancomunado en colectivo, caracterizaron esta experiencia llena de desafíos y logros.

ABSTRACT At the end of 2019, the existence and spread of a novel coronavirus called SARS-CoV-2, responsible of the disease COVID-19 was known worldwide. From the beginning, the Cuban governmental and health authorities drawn up epidemiological control strategies, in which the molecular diagnosis by real-time PCR was of paramount importance for the control of the disease in our country. A large number of young professionals and students from the School of Biology of the University of Havana joined this task. This paper deals with the main activities performed by the students related to the molecular diagnosis of SARS-CoV-2 at the "Pedro Kourí" Institute of Tropical Medicine (IPK) in the first months of the pandemic in our country. The exercise of the profession in the implementation of the skills, and theoretical and practical knowledge; the acquisition of new knowledge; and the promotion of ethical and moral values such as solidarity, companionship, and joint work characterized this experience full of challenges and achievements.

Comparison of different frequencies of transcutaneous electrical diaphragmatic stimulation in healthy subjects: a randomized crossover clinical trial / Comparação de diferentes frequências da estimulação diafragmática elétrica transcutânea em indivíduos saudáveis: ensaio clínico randomizado cruzado

Most transcutaneous electric diaphragmatic stimulation (TEDS) studies use a stimulation frequency (SF) of 30 Hz, although the reason for this SF value is not completely understood. Objective:The purpose of this study was to compare the acute effect of two TEDS frequencies on the respiratory muscle strength and endurance, muscle activation, muscle thickness, diaphragmatic mobility, cardiovascular variables and safety in healthy subjects. Methods:Randomized crossover clinical trial with 20 healthy subjects subjected to two interventions: SF=30 Hz group and SF=80 Hz group. TEDS was applied at the diaphragm motor points with a symmetric biphasicpulsed current (pulse duration= 500 µs) for 30 minutes. The evaluated outcomes were systolic blood pressure (SBP), diastolic blood pressure (DBP), heart rate (HR), respiratory muscle strength by maximal inspiratory pressure (MIP), maximal expiratory pressure (MEP), inspiratory peak flux (PIF), diaphragm thickness during inspiration (DTI) and expiration (DTE), diaphragm mobility and activation, and endurance (S-Index). Results:SF-30 Hz showed a reduction with respect to baseline values for SBP (p=0.04), HR (p<0.001), DTE (p=0.02), IPF (p=0.01), and S-Index (p=0.03). SF-80 Hz showed a reduction with respect to baseline values for HR (p<0.001) and an increase in MEP (p<0.001). However, these changes were not clinically important and there were no between-groups differences for any of the evaluated outcomes. No complications were observed. Conclusion:TEDS with SF-80 Hz produces similar effects to SF-30 Hz in healthy subjects and bothfrequencies proved to be safe (NCT03844711).

A maioria dos estudos utilizam a estimulação diafragmática elétrica transcutânea (EDET) com frequência (F) de estímulo de 30Hz e testar diferentes frequências torna-se necessário para uma aplicação otimizada. Objetivo: Foi comparar o efeito agudo de duas frequências diferentes da EDET sobre a força muscular respiratória e endurance, ativação diafragmática, espessura muscular e mobilidade diafragmática, variáveis cardiovasculares e segurança em indivíduos saudáveis. Métodos: Estudo randomizado cruzado com 20 indivíduos saudáveis submetidos a duas intervenções: Grupo I com F= 30Hz e Grupo II com F= 80Hz. A aplicação foi nos pontos motores do diafragma, com duração do pulso de 500µs, durante 30 minutos. Foram avaliados a pressão arterial sistólica (PAS) e diastólica (PAD), frequência cardíaca (FC), força muscular respiratória pela pressão inspiratória máxima (PImax), pressão expiratória máxima (PEmax), endurance e espessura muscular em inspiração (EDI) e expiração (EDE), mobilidade e ativação diafragmática. Resultados: O GI apresentou redução significativa em comparação às condições basais para os desfechos de PAS (p= 0.04), FC (p<0.001), EDI (p= 0,02), PIF (p= 0.01), e S-Index (p= 0.03). O GII apresentou redução significativa em comparação às condições basais para FC (p<0.001) e aumento da PEmax (p<0.001). Porém, estas alterações não foram clinicamente importantes e não houve diferença entre os grupos para nenhum desfecho avaliado. Nenhuma intercorrência foi observada. Conclusão: A EDET com F-80Hz produz efeitos semelhantes a F-30Hz em indivíduos saudáveis e ambas as frequências provaram ser seguras (NCT03844711).

Conocimientos, actitudes y percepción sobre el rol de los medios de comunicación respecto a la COVID-19 en estudiantes de Medicina de una universidad peruana / Knowledge, attitudes, and perception of the role of the media regarding COVID-19 in medical students from a peruvian university

RESUMEN Se realizó un estudio transversal en estudiantes de Medicina de una universidad privada de Lima. El objetivo fue describir el nivel de conocimientos y las actitudes sobre la COVID-19, además de su percepción sobre el rol de los medios de comunicación y de las redes sociales. El 32% no sabía que en los primeros cinco días de la enfermedad, las pruebas serológicas son preferibles para diagnosticar la COVID-19, comparadas con las pruebas moleculares; el 73% reportó estar dispuesto a trabajar como voluntario durante la pandemia y el 94% recibió información falsa sobre la COVID-19 en las redes sociales. Este estudio demuestra que la información sobre el uso de pruebas diagnósticas debe ser reforzada y que se debe tomar en cuenta el alto porcentaje de estudiantes dispuestos a ser voluntarios durante la pandemia de la COVID-19.

ABSTRACT A cross-sectional study was carried out on medical students from a private Peruvian university. The aim was to describe knowledge and attitudes towards COVID-19 as well as the student's perception of the role of media outlets and social media. Of the students, 32% did not know that during the first five days of illness, serological tests are preferred for diagnosing COVID-19 over molecular tests; 73% reported being willing to work as a volunteer during the pandemic, and 94% received false information regarding COVID-19 on social media. This study demonstrated that information regarding diagnostic tests should be reinforced and that the high percentage of students willing to volunteer during the COVID-19 pandemic should not be overlooked.

Exploration and Analysis of Volunteers’ Participation in Hospice Care Service Mode from the Perspective of Multiple Mutual Aid / 中国医学伦理学

In an aging society, the coexistence of multiple diseases among the elderly is prominent, and the prevalence of malignant tumors continues to rise.It has positive practical significance that improving the quality of life of dying patients and developing hospice care. Based on welfare multivariate theory, volunteers joining the hospice care team is conducive to the diversified development of the hospice care. By carrying out voluntary services and giving dignity to the dying, the quality of death can be improved and social support can be reflected. Based on the theory of mutual aid, volunteer participation in hospice care services is conducive to promoting the improvement of social spiritual civilization and achieving a virtuous cycle of intergenerational mutual aid. The mode of volunteer participation in hospice care service is still being gradually explored. This paper aimed to propose that the government introduces relevant voluntary service policies to build a good social atmosphere; based on the knowledge, belief and practice model, carry out education and training for volunteers and promote the overall coordinated development of the service team; put forward suggestions on improving the volunteer service mechanism by reaching confidentiality agreements, and improving the willingness of the dying and their families to accept volunteer services, so as to provide reference for the sustainable development of hospice care.

Study on pharmacokinetics of osmotic pump tablets of hydrochloride venlafaxine in Chinese healthy volunteers / 中国药理学通报

Aim To evaluate the pharmacokinetics and bioequivalence of two osmotic pump tablets of hydrochloride venlafaxine in Chinese healthy volunteers.Methods The fed test each enrolled twenty-six Chinese healthy volunteers in a randomized-sequence, open-label, two-period crossover single-dose oral test and reference preparations of hydrochloride venlafaxine extended-release tablets.The plasma concentrations of venlafaxine and its active metabolites O-desmethylvenlafaxine were determined by a validated liquid chromatography-tandem mass spectrometry(LC-MS/MS)method, and the pharmacokinetic parameters and bioequivalence of the two tablets were analyzed using PhoenixTM WinNonlin 6.4 software.Results The pharmacokinetic parameters of venlafaxine after single dose for the test and reference tablets were as follows: Cmax(58.50±19.47)vs(60.14±22.18)μg•L-1, AUC0-t(1 074.1±526.7)vs(1 057.9±539.7)μg•h•L-1, AUC0-∞(1 084.7±536.8)vs(1 067.8±554.0)μ g•h•L-1.The pharmacokinetic parameters of O-desmethylvenlafaxine were as follows: Cmax(101.63±29.64)vs(101.45±31.62)μg•L-1, AUC0-t(2 694.0±834.5)vs(2 702.9±946.4)μg• h•L-1, AUC0-∞(2 753.9±885.5)vs(2 753.2±988.4)μg•h•L-1.The 90% confidence intervals of the geometric mean ratios of Cmax, AUC0-t, AUC0-∞ for the test preparation and the reference preparationwere all within the equivalent interval of 80.00%-125.00%.Conclusion The test and reference preparations of hydrochloride venlafaxine extended-release tablets are bioequivalent in Chinese healthy volunteers under fed conditions.

Bioequivalence of amlodipine besylate tablets in Chinese healthy subjects / 中国临床药理学与治疗学

AIM: To evaluate the bioequivalence of two kinds of amlodipine besylate tablets in Chinese healthy subjects under fasting and fed conditions. METHODS: Twenty-four healthy subjects were enrolled, and a random, open, single-dose, two preparations, two sequences and double-crossover design was used to give the test or reference preparations under fasting and postprandial conditions. The concentration of metformin in plasma was detected by LC-MS/MS, and the main pharmacokinetic parameters were calculated to evaluate the bioequivalence. RESULTS: In fasting state, the mean of C