Metal in biological samples from electronic cigarette users and those exposed to their second-hand aerosol: a narrative review.

Introduction: Electronic nicotine delivery systems (ENDS) are gradually becoming more popular, particularly, among today's youth. Despite being marketed as safe by the tobacco industry, the notable absence of regulation in their composition is evident. Both the generated fluids and aerosol exhibit a wide variety of substances that are not yet fully identified. In addition to additives, the aerosol contains metals, the presence of which can be attributed to the excessive heating of metallic filaments used in vaporizing the liquid. Objective: This review aimed to identify and describe studies that have assessed metal levels in biological samples obtained from electronic cigarette users and those exposed to their second-hand aerosol. This involved detailing the types and concentrations of metals identified and the biological samples in which the metals were detected. Methods: Two independent researchers conducted searches in the MEDLINE and EMBASE databases to identify studies that measured the metal levels in human non-invasive biological samples from electronic cigarette users and second-hand exposure. Data were presented as a narrative review. Results: In total, 18 articles were included in this review. Overall active and passive exposure to ENDS was related to higher levels of many metals, including lead and cadmium, in biological samples. ENDS users, in general, have lower metal concentrations in biological samples compared to the users of combustible cigarettes. Conclusion: The exposure to primary and second-hand e-cigarette aerosol is related to higher metal concentrations in the biological samples. The adverse effects of this exposure on long-term users are yet to be determined.

Uso del cigarrillo electronico y riesgo de padecer enfermedades respiratorias en adolescentes y adultos jóvenes

Objetivo: Determinar el riesgo de padecer enfermedades respiratorias por el uso del cigarrillo electrónico. Materiales y métodos: Revisión integrativa, basada en el análisis de artículos científicos completos en bases de datos como: PubMed, Scopus y SciELO utilizando el método PRISMA, en el periodo 2018-2023, en los idiomas inglés y español. Resultados: Se obtuvo 95 artículos científicos, de los cuales se excluyeron un total de 75 por no cumplir con los criterios de selección, quedando seleccionados 20 artículos científicos que responden a los objetivos planteados. Conclusiones: Este estudio identificó los riesgos de padecer enfermedades respiratorias por el uso del cigarrillo electrónico, siendo las más relevantes: enfermedad pulmonar obstructiva crónica, neumonía, lesión pulmonar asociada al cigarrillo electrónico o al vapeo, síndrome de distrés respiratorio, hipertensión pulmonar y asma, además de acompañarse de signos y síntomas como infección de las vías aéreas, el desarrollo de enfermedades cardiovasculares, gastrointestinales y el inicio de adicciones. El estudio identificó que el sexo masculino es el predominante en exponerse más al riesgo de enfermedades respiratorias y la edad oscila entre los 14 a 35 años, convirtiéndose en un problema de salud pública que cada año va en aumento.

Objective: To determine the risk of respiratory diseases due to the use of electronic cigarettes. Materials and Methods: Integrative review, based on the analysis of complete scientific articles in databases such as: PubMed, Scopus and SciELO, using the PRISMA method, in the period 2018-2023, in English and Spanish. Results: Of the 95 scientific articles that were obtained, 20 met the selection criteria and were selected to meet the stated objectives. The remaining 75 articles were excluded. Conclusions: This study identi fied the risks of suffering from respiratory diseases associated with the use of electronic cigarettes. The most significant risks include chronic obstructive pulmonary disease, pneumonia, lung injury associated with electronic cigarettes or vaping, respiratory distress syndrome, pulmonary hypertension, and asthma. Symptoms may also include signs and symptoms of respiratory infections, development of cardiovascular and gastrointestinal diseases, and the onset of addiction. The study found that males are more susceptible to respiratory diseases, with the 14-35 age group being particularly affected. This is becoming a growing public health concern.

Objetivo: Determinar o risco de doenças respiratórias devido ao uso de cigarros eletrônicos. Materiais e métodos: Revisão integrativa, baseada na análise de artigos científicos completos em bases de dados como: PubMed, Scopus e SciELO, utilizando o método PRISMA, no período de 2018 a 2023, em inglês e espanhol. Resultados: Foram obtidos 95 artigos científicos, dos quais um total de 75 foram excluídos por não atenderem aos critérios de seleção, restando 20 artigos científicos selecionados que respondem aos objetivos estabelecidos. Conclusões: Este estudo identificou os riscos de doenças respiratórias decorrentes do uso de cigarros eletrônicos, sendo as mais relevantes a doença pulmonar obstrutiva crônica, pneumonia, lesão pulmonar associada ao cigarro eletrônico ou vaping, síndrome do desconforto respiratório, hipertensão pulmonar e asma, além de serem acompanhadas de sinais e sintomas como infecção das vias aéreas, desenvolvimento de doença cardiovascular, doença gastrointestinal e início de dependência. O estudo identificou que o sexo masculino está predominantemente exposto ao risco de doenças respiratórias e a idade varia de 14 a 35 anos, tornando-se um problema de saúde pública que aumenta a cada ano.

Profile of Brazilian Undergraduates Who Use Electronic Cigarettes: a Cross-Sectional Study on Forbidden Use.

The use of electronic cigarettes (e-cigarettes) persists in Brazil, despite restrictions on sales, imports, and advertising. This study aimed to identify the prevalence of e-cigarette use and user profiles among university students. This cross-sectional study used a convenience sample of 3083 university students (female = 2253, male = 830; M=26.1; SD =8.43) who completed an online survey. We employed logistic regression models and network analysis to determine the profile of e-cigarette users. The prevalence of e-cigarette use in the past year was 12.2% (n =377). Men, single individuals, Caucasians, secular individuals, and non-heterosexual individuals were more likely to engage in e-cigarette use. Intense use of alcohol, tobacco products, and illicit drugs increased the likelihood of e-cigarette use. Brazilian college students continue to use electronic cigarettes despite the prohibition. The pattern of alcohol abuse and tobacco product use among e-cigarette users is concerning. These risky behaviors render young and highly educated individuals targets for public policies to control and regulate electronic cigarettes in the country.

Genotoxicity and hypomethylation of LINE-1 induced by electronic cigarettes.

Currently, the marketing of electronic cigarettes as a safe alternative to smoking has increased, which is associated with greater use of these devices, especially among young people and smokers interested in quitting tobacco cigarettes. Given the growing use of this type of product, there is a need to determine the consequences of electronic cigarettes on human health, especially since many of the compounds contained in the aerosol and liquid of these devices have a high potential to be carcinogenic and genotoxic. Additionally, many of these compounds' aerosol concentrations exceed the safe limits. We have evaluated the levels of genotoxicity and changes in DNA methylation patterns associated with vaping. We analyzed a total of 90 peripheral blood samples from a population of vapers (n = 32), smokers (n = 18), and controls (n = 32), in which the frequencies of genotoxicity were determined by the cytokinesis-blocking micronuclei (CBMN) assay and the patterns of methylation of the repetitive elements of LINE-1 through the Quantitative Methylation Specific PCR (qMSP) assay. Here we show an increase in genotoxicity levels associated with vaping habits. Additionally, the group of vapers showed changes at the epigenetic level specifically associated with the loss of methylation of the LINE-1 elements. These changes in LINE-1 methylation patterns were reflected in its representative RNA expression detected in vapers.

Cigarros eletrônicos: uma abordagem acerca do conhecimento de jovens adultos e os riscos para o sistema respiratório / Electronic cigarettes: an approach about the knowledge of young adults and the risks to the respiratory system / Cigarrillos electrónicos: una aproximación sobre el conocimiento de los adultos jóvenes y los riesgos para el sistema respiratorio

A presente pesquisa teve o objetivo de avaliar o conhecimento dos jovens adultos sobre os cigarros eletrônicos e os seus efeitos no sistema respiratório. Tratou-se de uma pesquisa transversal, descritiva, com abordagem quantitativa, que foi desenvolvida através da plataforma Google Forms com aplicação de um questionário, contendo dados sociodemográficos e informações acerca do nível de conhecimento sobre os cigarros eletrônicos, divulgado nos grupos de Whatsapp e redes sociais, durante o período de julho a outubro de 2022. A amostra foi composta por adultos jovens, com idade entre 18 e 24 anos, com histórico de tabagismo ou não. Foram respeitadas as normas da Resolução 466/12 do Conselho Nacional de Saúde e a análise foi feita através da estatística descritiva simples. O estudo contou com a participação de 80 indivíduos, com participação homogênea entre os gêneros , sendo 40 do sexo feminino e 40 do masculino, com média de idade dos participantes de 21 anos ± 2,16, no qual, 35% (n=28) utilizam cigarros eletrônicos, 48% (n=38) afirmam ter alto nível de conhecimento sobre os mesmos, 41% (n=33) acreditavam que os dispositivos eletrônicos possuíam o mesmo risco que os cigarros convencionais, com isso, 76% (n=61) afirmam que os cigarros eletrônicos podem causar malefícios, mas não especificaram, além disso, observou-se que 25% (n=20) relatam sentir sensação de relaxamento, prazer ao consumir cigarro eletrônico. Dessa forma, pode-se observar que a amostra da pesquisa possui conhecimento sobre os cigarros eletrônicos, assim como os riscos, embora não saibam quais especificamente, bem como sua proporção no sistema respiratório.

This research aimed to evaluate the knowledge of young adults about electronic cigarettes and their effects on the respiratory system. This was a cross- sectional, descriptive research, with quantitative approach, which was developed through the Google Forms platform with application of a questionnaire, containing sociodemographic data and information about the level of knowledge about electronic cigarettes, disclosed in Whatsapp groups and social networks, during the period from July to October 2022. The sample was composed of young adults, aged between 18 and 24 years, with a history of smoking or not. The norms of Resolution 466/12 of the National Health Council were respected and the analysis was done through simple descriptive statistics. The study had the participation of 80 individuals, with homogeneous participation between genders, 40 females and 40 males, with a mean age of 21 years ± 2.16, in which, 35% (n=28) use electronic cigarettes, 48% (n=38) claim to have a high level of knowledge about them, 41% (n=33) believed that electronic devices have the same risk as conventional cigarettes, with this, 76% (n=61) stated that electronic cigarettes can cause harm, but did not specify, in addition, it was observed that 25% (n=20) report feeling a sense of relaxation, pleasure when consuming electronic cigarette. Thus, it can be observed that the research sample has knowledge about electronic cigarettes, as well as the risks, although they do not know which ones specifically, as well as their proportion on the respiratory system.

La presente investigación tuvo como objetivo evaluar el conocimiento de los jóvenes adultos sobre los cigarrillos electrónicos y sus efectos sobre el sistema respiratorio. Se trató de una investigación transversal, descriptiva, con abordaje cuantitativo, que se desarrolló a través de la plataforma Google Forms con aplicación de un cuestionario, conteniendo datos sociodemográficos e informaciones sobre el nivel de conocimiento sobre cigarrillos electrónicos, divulgados en grupos de Whatsapp y redes sociales, durante el período de julio a octubre de 2022. La muestra fue compuesta por jóvenes adultos, con edad entre 18 y 24 años, con historia de fumador o no. Fueron respetadas las normas de la Resolución 466/12 del Consejo Nacional de Salud y el análisis fue hecho a través de estadística descriptiva simple. El estudio contó con la participación de 80 individuos, con participación homogénea entre géneros, siendo 40 mujeres y 40 hombres, con edad media de los participantes de 21 años ± 2,16, en los cuales, 35% (n=28) utilizan cigarrillos electrónicos, 48% (n=38) afirman tener alto nivel de conocimiento sobre los mismos, 41% (n=33) creen que los dispositivos electrónicos tienen el mismo riesgo que los cigarrillos convencionales, con esto, 76% (n=61) afirman que los cigarrillos electrónicos pueden causar daño, pero no especificaron, además, se observó que 25% (n=20) dicen sentir sensación de relajación, placer al consumir cigarrillo electrónico. Por lo tanto, se puede observar que la muestra de la investigación tiene conocimiento sobre los cigarrillos electrónicos, así como los riesgos, aunque no saben cuáles específicamente, así como su proporción en el sistema respiratorio.

Adaptation and Psychometric Properties of the Electronic Cigarette Dependence Index (ECDI) in a Colombian Sample.

Electronic cigarettes had become a public health concern, generating the need of having standardized instruments to evaluate the consequences of their use. Objective: The goal of this study was to adapt and evaluate the validity and reliability of the Electronic Cigarette Dependence Index (ECDI) to a Colombian sample. Method: In this instrumental quantitative research, the instrument was adapted to the Spanish language, evaluated by expert judges and contested by 128 adult regular electronic cigarettes users. Results: The results suggest a single factor structure with reliable goodness of fit measures and values of internal consistency between acceptable and adequate. Conclusion: These results suggest the ECDI as a valid and reliable index to be used in Colombian samples.

El consumo de cigarrillo electrónico se ha convertido en un problema de salud publica, lo que ha generado la necesidad de contar con instrumentos estandarizados que evalúen las consecuencias de su uso. Objetivo: El objetivo del presente estudio fue adaptar y evaluar las condiciones de validez y confiabilidad del Índice de Dependencia del Cigarrillo Electrónico (IDCE) en una muestra de adultos colombianos. Método: Se realizó una investigación de tipo cuantitativa instrumental, en la cual el instrumento fue adaptado al español, evaluado por jueces y aplicado a 128 consumidores de cigarrillo electrónico. Resultados: El análisis factorial confirmatorio muestra una estructura unifactorial, con adecuados índices de bondad de ajuste, que concuerda con la propuesta teórica, y se hallan valores de consistencia interna entre aceptables y adecuados. Conclusión: Los resultados permiten indicar que el índice de dependencia del cigarrillo electrónico es una escala válida y confiable para ser utilizada en adultos colombianos.

Analytic modeling and risk assessment of aerial transmission of SARS-CoV-2 virus through vaping expirations in shared micro-environments.

It is well known that airborne transmission of COVID-19 in indoor spaces occurs through various respiratory activities: breathing, vocalizing, coughing, and sneezing. However, there is a complete lack of knowledge of its possible transmission through exhalations of e-cigarette aerosol (ECA), which is also a respiratory activity. E-cigarettes have become widely popular among smokers seeking a much safer way of nicotine consumption than smoking. Due to restrictive lockdown measures taken during the COVID-19 pandemic, many smokers and vapers (e-cigarette users) were confined to shared indoor spaces, making it necessary to assess the risk of SARS-CoV-2 virus aerial transmission through their exhalations. We summarize inferred knowledge of respiratory particles emission and transport through ECA, as well as a theoretical framework for explaining the visibility of exhaled ECA, which has safety implications and is absent in other respiratory activities (apart from smoking). We also summarize and briefly discuss the effects of new SARS-CoV-2 variants, vaccination rates, and environmental factors that may influence the spread of COVID-19. To estimate the risk of SARS-CoV-2 virus aerial transmission associated with vaping exhalations, we adapt a theoretical risk model that has been used to analyze the risks associated with other respiratory activities in shared indoor spaces. We consider home and restaurant scenarios, with natural and mechanical ventilation, with occupants wearing and not wearing face masks. We consider as "control case" or baseline risk scenario an indoor space (home and restaurant) where respiratory droplets and droplet nuclei are uniformly distributed and aerial contagion risk might originate exclusively from occupants exclusively rest breathing, assuming this to be the only (unavoidable) respiratory activity they all carry on. If an infected occupant uses an e-cigarette in a home or restaurant scenarios, bystanders not wearing face masks exposed to the resulting ECA expirations face a [Formula: see text] increase of risk of contagion with respect the control case. This relative added risk with respect to the control case becomes [Formula: see text] for high-intensity vaping, [Formula: see text], and over [Formula: see text] for speaking for various periods or coughing (all without vaping). Infectious emissions are significantly modified by mechanical ventilation, face mask usage, vaccination, and environmental factors, but given the lack of empiric evidence, we assume as a working hypothesis that all basic parameters of respiratory activities are equally (or roughly equally) affected by these factors. Hence, the relative risk percentages with respect to the control state should remain roughly the same under a wide range of varying conditions. By avoiding direct exposure to the visible exhaled vaping jet, wearers of commonly used face masks are well protected from respiratory droplets and droplet nuclei directly emitted by mask-less vapers. Compared to the control case of an already existing (unavoidable) risk from continuous breathing, vaping emissions in shared indoor spaces pose just a negligible additional risk of COVID-19 contagion. We consider that it is not necessary to take additional preventive measures beyond those already prescribed (1.5 m separation and wearing face masks) in order to protect bystanders from this contagion.

Heated tobacco product use, its correlates, and reasons for use among Mexican smokers.

BACKGROUND: Little is known about the use of novel heated tobacco products (HTPs) in low- and middle-income countries. We examined among smokers in Mexico the prevalence and correlates of HTP use, as well as reasons for using HTPs. METHODS: We analyzed data from five surveys (November 2019-March 2021) of an open cohort of adult smokers (n = 6500), including an oversample of those who also use e-cigarettes. Mixed-effects multinomial logistic models were used to estimate associations between study variables and current HTP use or prior HTP trial relative to never trying HTPs. RESULTS: The weighted prevalence of current HTP use was 1.1%. Independent correlates of current HTP use included smoking frequency, intention to quit, e-cigarette use, having partners/family-members who use e-cigarettes, friends who use HTPs, and exposure to HTP information inside/outside tobacco shops. Having partners/family members who smoke and not knowing about the harm of HTPs relative to cigarettes were associated with lower likelihood of current HTP use. Having tried HTPs was more likely among light daily smokers, those with family who use HTPs and exposure to HTP information outside shops and on newspapers/magazines. Among current users, the top reasons for using HTPs were greater social acceptability (50.6%) and lower perceived harm (34.9%) relative to cigarettes. CONCLUSIONS: Uptake of HTPs appears relatively low among Mexican smokers, and correlates of use are similar to those for e-cigarette use. Further research is needed to determine if HTPs use promotes or impedes smoking cessation, given current HTP users are also likely to use various nicotine products.

Injuria pulmonar por vapeo / Vaping-induced lung injury

Resumen Se considera vapeo a la inhalación de aerosoles generados por el calentamiento de líquidos. Existen dispositivos que se comercializan libremente para realizar vapeo, siendo los cigarrillos electrónicos los más frecuentes. Estos productos están asociados a la aparición de injuria pulmonar, ya sea injuria pulmonar inducida por vapeo (VAPI), o injuria pulmonar asociada a vapeo y cigarrillos electrónicos (EVALI). Se presenta el caso de una mujer de 54 años con antecedentes de vapeo en los últimos 9 meses. Consultó por disnea clase funcional IV asociada a náuseas y vómitos de 18 h de evolución. Al ingreso presentó insuficiencia respiratoria. Se realizó intubación orotraqueal con asistencia ventilatoria mecánica; la tomografía de tórax evidenció infiltrados alveolares difusos bilaterales. Se interpretó el cuadro clínico como VAPI/EVALI. Aún se desconoce la fisiopato genia exacta de la injuria pulmonar inducida por vapeo; la disnea y tos son los síntomas más frecuentes. Todos los pacientes tienen imágenes radiológicas patológicas. El soporte respiratorio y los corticoides sistémicos son el tratamiento de elección.

Abstract Vaping is considered to be the inhalation of aerosols generated by heating liquids. There are devices freely marketed for vaping, with electronic cigarettes being the most common. These products are associated with the appearance of lung injury, either vaping-induced lung injury (VAPI), or lung injury associated with vaping and electronic cigarettes (EVALI). We presented the case of a 54-year-old woman with a history of vaping in the last 9 months. She consulted for acute dyspnea (class IV) associated with nausea and vomiting of 18 hours of evolution. Upon admission, she presented respiratory failure. Orotracheal intubation was performed with mechanical ventilatory assistance. A chest tomography revealed bi lateral diffuse alveolar infiltrates. The clinical picture was interpreted as VAPI/EVALI. The exact pathophysiology of vaping-induced lung injury is still unknown; dyspnea and cough are the most frequent symptoms. All patients have pathological radiological images. Respiratory support and systemic corticosteroids are the treatment of choice.

[Vaping-induced lung injury]. / Injuria pulmonar por vapeo.

Vaping is considered to be the inhalation of aerosols generated by heating liquids. There are devices freely marketed for vaping, with electronic cigarettes being the most common. These products are associated with the appearance of lung injury, either vaping-induced lung injury (VAPI), or lung injury associated with vaping and electronic cigarettes (EVALI). We presented the case of a 54-year-old woman with a history of vaping in the last 9 months. She consulted for acute dyspnea (class IV) associated with nausea and vomiting of 18 hours of evolution. Upon admission, she presented respiratory failure. Orotracheal intubation was performed with mechanical ventilatory assistance. A chest tomography revealed bilateral diffuse alveolar infiltrates. The clinical picture was interpreted as VAPI/EVALI. The exact pathophysiology of vaping-induced lung injury is still unknown; dyspnea and cough are the most frequent symptoms. All patients have pathological radiological images. Respiratory support and systemic corticosteroids are the treatment of choice.

Se considera vapeo a la inhalación de aerosoles generados por el calentamiento de líquidos. Existen dispositivos que se comercializan libremente para realizar vapeo, siendo los cigarrillos electrónicos los más frecuentes. Estos productos están asociados a la aparición de injuria pulmonar, ya sea injuria pulmonar inducida por vapeo (VAPI), o injuria pulmonar asociada a vapeo y cigarrillos electrónicos (EVALI). Se presenta el caso de una mujer de 54 años con antecedentes de vapeo en los últimos 9 meses. Consultó por disnea clase funcional IV asociada a náuseas y vómitos de 18 h de evolución. Al ingreso presentó insuficiencia respiratoria. Se realizó intubación orotraqueal con asistencia ventilatoria mecánica; la tomografía de tórax evidenció infiltrados alveolares difusos bilaterales. Se interpretó el cuadro clínico como VAPI/EVALI. Aún se desconoce la fisiopatogenia exacta de la injuria pulmonar inducida por vapeo; la disnea y tos son los síntomas más frecuentes. Todos los pacientes tienen imágenes radiológicas patológicas. El soporte respiratorio y los corticoides sistémicos son el tratamiento de elección.

Características de consumo de tabaco en jóvenes estudiantes en Paraguay / Characteristics of tobacco use in young students in Paraguay

Introducción: Actualmente el tabaquismo es una de las mayores amenazas para la salud pública a nivel mundial. La muerte atribuida al tabaco en Paraguay representa el 12,2% de todas las muertes y el costo de la enfermedad asociada al consumo de tabaco en el sistema de salud es elevado. Objetivos: El objetivo de este estudio es describir las características del consumo de tabaco en jóvenes en Paraguay. Materiales y métodos: Se realizó un estudio descriptivo transversal no probabilístico de muestreo estandarizado con representatividad nacional en estudiantes matriculados del 7° al 9° grado de la educación escolar básica, de 13 a 15 años de ambos sexos que incluyo a 6.518 estudiantes, correspondiente a 25 escuelas de la capital y 25 escuelas en el resto del país. Resultados: La prevalencia actual de consumo de productos de tabaco fue del 7%, fumadores actuales de 3,9% y fumadores de cigarrillos electrónicos de 3,7%. La prevalencia de fumadores de segunda mano fue más del 20% en todos los escenarios estudiados. Alto porcentaje de adolescentes con acceso fácil a la compra de cigarrillos sin verificación de la edad. Más del 50% con acceso a mensajes publicitarios sobre tabaco. Casi un 30% tenían conocimiento del efecto dañino del tabaco y más del 80% se manifiestan favorables a la prohibición de fumar en espacios cerrados y abiertos. Conclusión: Aunque la prevalencia de fumadores en adolescentes no es muy elevada, es un problema de salud pública creciente. Se requiere fortalecer las medidas de prevención y control.

Introduction: Currently, smoking is one of the greatest threats to public health worldwide. Death attributed to tobacco in Paraguay represents 12.2% of all deaths and the cost of the disease associated with tobacco consumption in the health system is high. Objectives: The objective of this study is to describe the characteristics of tobacco consumption in young people in Paraguay. Materials and methods: A non-probabilistic descriptive cross-sectional study of standardized sampling was carried out with national representativeness in students enrolled from 7th to 9th grade of basic school education, from 13 to 15 years old of both sexes that included 6,518 students, corresponding to 25 schools in the capital and 25 schools in the rest of the country. Results: The current prevalence of tobacco product use was 7%, current smokers 3.9%, and electronic cigarette smokers 3.7%. The prevalence of second-hand smokers was more than 20% in all the scenarios studied. High percentage of adolescents with easy access to the purchase of cigarettes without age verification. More than 50% with access to advertising messages about tobacco. Almost 30% were aware of the harmful effect of tobacco and more than 80% are in favor of the prohibition of smoking in closed and open spaces. Conclusion: Although the prevalence of smoking in adolescents is not very high, it is a growing public health problem. It is necessary to strengthen prevention and control measures.

Electronic nicotine delivery systems (ECs) and COVID-19: the perfect storm for young consumers.

The COVID-19 pandemic caused a change in our society and put health systems in crisis worldwide. Different risk factors and comorbidities have been found that increase the risk of mortality when acquiring this infection. The use of alternative devices to the cigarette like the electronic cigarettes, the vapers have been studied widely and generators of great controversy since it has been discovered that they also produce different pulmonary affections. When developing the SARS-CoV2 infection, different theories have been generated about the greater predisposition to a worse prognosis of people who use electronic cigarettes; however, the information on this continues in discovery. A group of experts made up of oncologists, infectologists, pulmonologists, and epidemiologists met to review the literature and then generate theories about the impact of electronic cigarettes on SARS-CoV2 infection.

Efectos en la salud de los sistemas electrónicos de administración de nicotina (SEAN) / Health Effects of Electronic Nicotine Delivery Systems (SEAN)

Resumen Sin lugar a dudas, el tabaquismo continúa siendo la principal causa de enfermedad, discapacidad y muerte prematura a nivel mundial. Sin embargo, el advenimiento de los nuevos sistemas electrónicos de administración de nicotina (SEAN), entre los que destaca el cigarrillo electrónico, ha tenido un crecimiento explosivo y en algunos países ha desplazado a los cigarrillos de tabaco, especialmente entre los jóvenes que se sienten atraídos por sus llamativos sabores y por el despliegue de tecnología que se utiliza en su diseño y funcionamiento. Los SEAN surgieron inicialmente en 2003 como una supuesta ayuda para dejar de fumar, a 16 años de esta fecha no hay estudios clínicos que confirmen su superioridad sobre los medicamentos existentes para tal fin: terapias de reemplazo de nicotina, bupropión y vareniclina, ni sobre las terapias psicológicas como la racional emotiva y la cognitivo conductual. Por el contrario, se han acumulado gran cantidad de evidencias sobre el efecto deletéreo que tienen sobre la salud de los consumidores, el riesgo que representan es indudable y esto se confirma por reportes recientes de Centros de Control de Enfermedades de los Estados Unidos (CDC) que señalan 2,172 casos hospitalizados con enfermedad pulmonar aguda y 42 muertes por esta causa, siendo el 79% personas menores de 35 años. Este brote de enfermedad pulmonar ha determinado que se plantee la prohibición de los SEAN en Estados Unidos. Asimismo, la Food and Drug Administration (FDA) aprobó la venta de los cigarrillos híbridos o heets que utilizan tabaco calentado, los cuales ya están disponibles en nuestro país. No cabe duda de que como profesionales del área de la salud nuestra obligación es informar con evidencias científicas sobre los riesgos que representan los SEAN para sus consumidores, asimismo debemos aprender de la historia del tabaquismo para poder prevenir la morbimortalidad asociada con estos nuevos productos del tabaco.

Abstract Without a doubt, smoking continues to be the leading cause of disease, disability, and premature death worldwide. However, the advent of the new Electronic Administration Systems of Nicotine (SEAN), among which the electronic cigarette stands out, has had explosive growth and in some countries has depleted tobacco cigarettes, especially among young people who feel attracted by its striking flavors and the deployment of technology that is used in its design and operation. The SEANs initially emerged in 2003 as a supposed help to quit smoking, at 16 years from this date no clinical studies are confirming their superiority over existing medications for this purpose: nicotine, bupropion and varenicline replacement therapies, or over psychological therapies such as emotional and cognitive-behavioral rational. On the other side, a large amount of evidence has been accumulated on the deleterious effect they have on the health of consumers, the risk they represent is unquestionable and this is confirmed by recent reports from the Centers for Disease Control of the United States (CDC) that indicate 2142 hospitalized cases with acute lung disease and 42 deaths from this cause, 79% being people under 35 years. This outbreak of lung disease has determined that the ban on SEAN in the United States will be planted. Also, the Food and Drug Administration (FDA) approved the sale of hybrid cigarettes or "Heets" (Heat-not-burn tobacco products), which uses heated tobacco, and are now available in our country. There is no doubt that as health professionals, we must inform with scientific evidence about the risks that SEANs pose to their consumers, we must also learn from the history of smoking to prevent the morbidity and mortality associated with these new tobacco products.

Frecuencia y perfil del uso de cigarrillos electrónicos en estudiantes de una Universidad Pública / Frequency and profile of the electronic cigarettes use in students of a Public University

Introducción: El consumo de Cigarrillos electrónicos (CE) ha aumentado considerablemente en los últimos años. Estos productos son ahora los más comúnmente utilizados por la juventud en diversos países del mundo y nuestro país no está exento de su utilización. En este contexto se ha realizado el presente estudio; cuyo objetivo fue conocer la frecuencia de uso de cigarrillo electrónico y otras características del consumo de CE en universitarios. Materiales y Métodos: Estudio observacional, descriptivo. Se procesaron datos de 1500 estudiantes de diferentes Unidades Académicas de la UNA que respondieron a la encuesta electrónica. Se determinaron variables demográficas como sexo y edad, particularidades sobre los CE relacionadas a la preferencia por determinado dispositivo, motivaciones para el consumo, simultaneidad de consumo de cigarrillo común, así como la percepción de riesgo con respecto al mismo y las molestias ocasionadas por vapear. La encuesta fue anónima y realizada entre los meses de junio y julio del año 2019 mediante la plataforma libre Google Form. Para el procesamiento de datos se utilizó la planilla Excel. Los estudiantes recibieron vía aplicación de mensajería instantánea un link para responder el cuestionario, el mismo fue distribuido por grupos de docentes y delegados de los cursos de cada unidad académica. Resultados: Respondieron a la encuesta un total de 1500 alumnos, 502 hombres (33,5%) y 998 mujeres (66,5%). El promedio de edad fue de 24 años (DE: ± 3.2), con edades comprendidas entre los 17 y 62 años. Al preguntar sobre el hábito de fumar o vapear los estudiantes respondieron: No fuma ninguno 1222 (81 %), consume cigarrillos electrónicos: 74(5 %), 146 (10%) consumen cigarrillo común y un total de 58(4%) consumen ambos productos. Considerando el total de consumidores de CE y aquellos que utilizan ambos (CE y Cigarrillo común), tenemos una frecuencia de 132 consumidores de CE (9%). Percepción de riesgo con respecto a cigarrillos comunes: Ningún riesgo 32 (24%), pequeño riesgo: 54 (41%), riesgo moderado: 34 (26%), alto riesgo: 9 (7%) e igual riesgo: 3 (2%). Entre las molestias más frecuentes: tos 27 (20%), irritación de garganta 20 (15%), dolor de cabeza 6 (5 %) y malestar general 4 (3%). Conclusión: El uso de CE se aproxima al consumo de cigarrillo común y los universitarios no son conscientes sobre los daños potenciales que confiere el uso de estos dispositivos. Para prevenir y reducir el uso de cigarrillos electrónicos por los jóvenes y los adultos jóvenes debemos poner en práctica estrategias de prevención efectivas.

Introduction: The consumption of Electronic Cigarettes (EC) has increased considerably in recent years. These products are now the most commonly used by youth in various countries of the world and our country is not exempt from their use. In this context, the present study has been carried out; whose objective was to know the frequency of use of electronic cigarettes and other characteristics of CE consumption in university students. Materials and methods: Observational, descriptive study. Data from 1500 students from different UNA Academic Units that responded to the electronic survey were processed. Demographic variables such as sex and age, peculiarities on EC related to the preference for a certain device, motivations for consumption, simultaneity of consumption of common cigarettes, as well as the perception of risk with respect to it and the discomfort caused by vaping were determined. The survey was anonymous and carried out between the months of June and July of the year 2019 through the free platform Google Forms. The Excel spreadsheet was used for data processing. The students received a link via instant messaging application to answer the questionnaire, it was distributed by groups of teachers and delegates of the courses of each academic unit. Results: A total of 1500 students answered the survey, 502 men (33.5%) and 998 women (66.5%). The average age was 24 years (SD: ±16), with ages between 17 and 62 years. When asked about the habit of smoking or vaping, the students answered: 1222 (81%) do not smoke, use electronic cigarettes: 74 (5%), 146 (10%) use a regular cigarette and a total of 58 (4%) use both products. Considering the total of EC consumers and those who use both (EC and Common Cigarette), we have a frequency of 132 EC consumers (9%). Perception of risk with respect to common cigarettes: No risk 32 (24%), small risk: 54 (41%), moderate risk: 34 (26%), high risk: 9 (7%) and equal risk: 3 (2 %). Among the most frequent complaints: cough 27 (20%), throat irritation 20 (15%), headache 6 (5%) and general discomfort 4 (3%). Conclusion: The use of EC is close to the consumption of common cigarettes and the university students are not aware of the potential damage that the use of these devices confers. To prevent and reduce the use of electronic cigarettes by youth and young adults, we must implement effective prevention strategies.

[Current and emerging issues in tobacco prevention and control]. / Estado actual y desafíos emergentes en la prevención y el control del tabaco.

OBJECTIVE: To review the implementation of the WHO Framework Convention onTobacco Control in theAmericas, describe two national case studies and analyze the evidence on electronic cigarettes from a public health perspective. MATERIALS AND METHODS: Revision of the tobacco control legislation and the scientific evidence regarding electronic cigarettes. RESULTS: Implementation of tobacco control policies is not homogeneous, with important advances in smoke-free environments, pictorial health warnings, and epidemiological surveillance, but challenges that remain for the implementation of a total ban of tobacco advertising, increases in tobacco taxes, and tobacco cessation programs. Tobacco industry interference is one of the main obstacles for advancing and novel products create uncertainty about their regulation. CONCLUSIONS: There is a need for political will for a comprehensive implementation of the Convention, with evidence-based decisions to confront challenges and to defend the achievements from tobacco industry interference.

OBJETIVO: Revisar la aplicación del Convenio Marco de la OMS para el Control del Tabaco en las Américas, describir dos estudios de caso nacionales y analizar la evidencia sobre los cigarrillos electrónicos desde la perspectiva de salud pública. MATERIAL Y MÉTODOS: Revisión de la legislación de control de tabaco y la evidencia científica sobre los cigarrillos electrónicos. RESULTADOS: La aplicación de políticas no es homogénea, con avances importantes en ambientes libres de humo, advertencias sanitarias gráficas y vigilancia epidemiológica, pero desafíos pendientes en la prohibición total de la publicidad, incremento de impuestos y cesación tabáquica.La interferencia de la industria tabacalera es uno de los principales obstáculos para avanzar y los nuevos productos crean incertidumbre sobre su regulación. CONCLUSIONES: Se necesita revitalizar la voluntad política para aplicar integralmente el Convenio, tomando decisiones basadas en evidencia ante los nuevos desafíos y defendiendo los logros de la interferencia de la industria.

Estado actual y desafíos emergentes en la prevención y el control del tabaco / Current and emerging issues in tobacco prevention and control

Resumen: Objetivos: Revisar la aplicación del Convenio Marco de la OMS para el Control del Tabaco en las Américas, describir dos estudios de caso nacionales y analizar la evidencia sobre los cigarrillos electrónicos desde la perspectiva de salud pública. Material y métodos: Revisión de la legislación de control de tabaco y la evidencia científica sobre los cigarrillos electrónicos. Resultados: La aplicación de políticas no es homogénea, con avances importantes en ambientes libres de humo, advertencias sanitarias gráficas y vigilancia epidemiológica, pero desafíos pendientes en la prohibición total de la publicidad, incremento de impuestos y cesación tabáquica. La interferencia de la industria tabacalera es uno de los principales obstáculos para avanzar y los nuevos productos crean incertidumbre sobre su regulación. Conclusiones: Se necesita revitalizar la voluntad política para aplicar integralmente el Convenio, tomando decisiones basadas en evidencia ante los nuevos desafíos y defendiendo los logros de la interferencia de la industria.

Abstract: Objectives: To review the implementation of the WHO Framework Convention on Tobacco Control in the Americas, describe two national case studies and analyze the evidence on electronic cigarettes from a public health perspective. Materials and methods: Revision of the tobacco control legislation and the scientific evidence regarding electronic cigarettes. Results: Implementation of tobacco control policies is not homogeneous, with important advances in smoke-free environments, pictorial health warnings, and epidemiological surveillance, but challenges that remain for the implementation of a total ban of tobacco advertising, increases in tobacco taxes, and tobacco cessation programs. Tobacco industry interference is one of the main obstacles for advancing and novel products create uncertainty about their regulation. Conclusion: There is a need for political will for a comprehensive implementation of the Convention, with evidence-based decisions to confront challenges and to defend the achievements from tobacco industry interference.

Sex Differences in Becoming a Current Electronic Cigarette User, Current Smoker and Current Dual User of Both Products: A Longitudinal Study among Mexican Adolescents.

This study aimed to assess sex differences in predictors for becoming a current exclusive electronic cigarette (e-cigarette) user, current exclusive smoker, or current dual user (concurrent smoking and e-cigarette use). This longitudinal study included 2399 females and 2177 males who had tried neither cigarettes nor e-cigarettes at baseline and attended 57 middle schools in the three largest cities in Mexico. We estimated multinomial logistic models stratified by sex. At follow-up, the prevalence of current exclusive e-cigarette use was 6.4% for males and 5.5% for females; current exclusive smoking was similar among males (3.6%) and females (3.5%); dual use was 2.4% females and 1.8% males. In the adjusted model, current e-cigarette use among females was associated with baseline current drinking (ARR = 1.85; p < 0.05), having a job (ARR = 1.99; p < 0.05), higher technophilia (ARR = 1.27; p < 0.05), and higher positive smoking expectancies (ARR = 1.39; p < 0.05). Among males, only having friends who smoke cigarettes at baseline was a significant predictor of current exclusive e-cigarette use at follow-up (ARR = 1.44; p < 0.05). For both sexes, current exclusive smoking at follow-up was associated with baseline current drinking (male ARR = 2.56; p < 0.05; female ARR = 2.31; p < 0.05) and, among males, only with having a parent who smoked (ARR = 1.64; p < 0.05). For both sexes, dual use at follow-up was associated with baseline current drinking (male ARR = 3.52; p < 0.005; female ARR = 2.77; p < 0.05); among females, with having paid work (ARR = 2.50; p < 0.001); and among males, with parental smoking (ARR = 3.20; p < 0.05). Results suggested both common and different risk factors by sex, suggesting that interventions may need to consider targeting sex differences.

[New tobacco products, a threat for tobacco control and public health of Mexico]. / Nuevos productos de tabaco, una amenaza para el control de tabaco y la salud pública de México.

The new tobacco products that include electronic cigarettes (called "E Cig", "e-hookahs", "mods", "vape-pens"), electronic nicotine delivery systems (SEAN, Spanish acronym), similar systems without nicotine (SSSN, Spanish acronym) and alternative nicotine consumption systems (SACN, Spanish acronym), are positioned in the global market with a discourse of harm reduction and risk minimization. This manuscript summarizes the scientific evidence and presents a regulatory proposal for this technological innovation, oriented to guide the decision making of legislators, government institutions and organized civil society. The scientific evidence concludes that there is no safe tobacco product for health. The addictive nature of nicotine and the health damages for children, adolescents and pregnant women is the fundamental argument. These new products promote the transition to conventional cigarettes and have not shown efficacy for smoking cessation, on the contrary, they promote dual use. High-level regulation must be formulated without the intervention of the manufacturers or institutions with a conflict of interest in the context of the complete and integral World Health Organization Framework Convention on Tobacco Control implementation.

Los nuevos productos de tabaco, entre los que se incluyen los cigarros electrónicos (denominados "E Cigs", "e-hookahs", "mods", "vape-pens"), los sistemas electrónicos de administración de nicotina (SEAN), los sistemas similares sin nicotina (SSSN) y los sistemas alternativos de consumo de nicotina (SACN), incursionan en el mercado global con un discurso de reducción del daño y minimización del riesgo. Este manuscrito resume la evidencia científica y una propuesta regulatoria sobre esta innovación tecnológica, con el fin de orientar la toma de decisiones de legisladores, instituciones gubernamentales y la sociedad civil organizada. La evidencia científica concluye que no existe un producto de tabaco seguro para la salud; la naturaleza adictiva de la nicotina y los daños a la salud causados en niños, adolescentes y mujeres embarazadas constituyen el argumento fundamental. Estos nuevos productos promueven la transición al consumo de cigarros combustibles y no han demostrado eficacia para la cesación tabáquica; por el contrario, promueven el uso dual. Toda regulación debe formularse sin la intervención de los fabricantes o instituciones con conflicto de interés y en el marco de la implementación completa e integral del Convenio Marco de la Organización Mundial de la Salud para el Control del Tabaco.

Nuevos productos de tabaco, una amenaza para el control de tabaco y la salud pública de México / New tobacco products, a threat for tobacco control and public health of Mexico

Resumen Los nuevos productos de tabaco, entre los que se incluyen los cigarros electrónicos (denominados "E Cigs", "e-hookahs", "mods", "vape-pens"), los sistemas electrónicos de administración de nicotina (SEAN), los sistemas similares sin nicotina (SSSN) y los sistemas alternativos de consumo de nicotina (SACN), incursionan en el mercado global con un discurso de reducción del daño y minimización del riesgo. Este manuscrito resume la evidencia científica y una propuesta regulatoria sobre esta innovación tecnológica, con el fin de orientar la toma de decisiones de legisladores, instituciones gubernamentales y la sociedad civil organizada. La evidencia científica concluye que no existe un producto de tabaco seguro para la salud; la naturaleza adictiva de la nicotina y los daños a la salud causados en niños, adolescentes y mujeres embarazadas constituyen el argumento fundamental. Estos nuevos productos promueven la transición al consumo de cigarros combustibles y no han demostrado eficacia para la cesación tabáquica; por el contrario, promueven el uso dual. Toda regulación debe formularse sin la intervención de los fabricantes o instituciones con conflicto de interés y en el marco de la implementación completa e integral del Convenio Marco de la Organización Mundial de la Salud para el Control del Tabaco.

Abstract: The new tobacco products that include electronic cigarettes (called "E Cig", "e-hookahs", "mods", "vape-pens"), electronic nicotine delivery systems (SEAN, Spanish acronym), similar systems without nicotine (SSSN, Spanish acronym) and alternative nicotine consumption systems (SACN, Spanish acronym), are positioned in the global market with a discourse of harm reduction and risk minimization. This manuscript summarizes the scientific evidence and presents a regulatory proposal for this technological innovation, oriented to guide the decision making of legislators, government institutions and organized civil society. The scientific evidence concludes that there is no safe tobacco product for health. The addictive nature of nicotine and the health damages for children, adolescents and pregnant women is the fundamental argument. These new products promote the transition to conventional cigarettes and have not shown efficacy for smoking cessation, on the contrary, they promote dual use. High-level regulation must be formulated without the intervention of the manufacturers or institutions with a conflict of interest in the context of the complete and integral World Health Organization Framework Convention on Tobacco Control implementation.

Patterns of awareness and use of electronic cigarettes in Mexico, a middle-income country that bans them: Results from a 2016 national survey.

Among high-income countries, awareness and use of e-cigarettes is lower in countries with more restrictive e-cigarette regulations. Little is known about e-cigarettes in middle-income countries, many of which like Mexico, ban e-cigarette sales and marketing. The current study determined the national-level prevalence and correlates of e-cigarette awareness and consumption in Mexico. Data were analyzed from a 2016 nationally representative survey. Prevalence of e-cigarette awareness, trial and current use was estimated separately for adolescents (n = 12,436), adult nonsmokers (n = 36,966), and adult smokers (n = 7347). For each group, crude and adjusted logistic models regressed e-cigarette outcomes on sociodemographic and smoking-related variables, adjusting for the sampling design and weights. Prevalence varied across subgroups for e-cigarette awareness (adolescents = 45.3%; adult nonsmokers = 33.9%; adult smokers = 54.3%), e-cigarette trial (adolescents = 6.5%; adult nonsmokers = 2.6%; adult smokers = 18.2%) and current use of electronic cigarettes (adolescents = 1.1%; adult nonsmokers = 0.3%; adult smokers = 4.5%). Among adolescents and adults, current smoking and higher smoking frequency were significantly associated with e-cigarette awareness, trial and use. Among adolescents and nonsmokers, awareness, trial and use of e-cigarette were significantly lower among females than males. Among adult smokers, however, females were more likely to use e-cigarettes than males (AOR = 1.80; 95% CI = 1.08-3.02). Higher education and greater wealth increased the likelihood of trial of e-cigarettes among adult nonsmokers and smokers. Despite the ban on the distribution and sales of e-cigarettes, a substantial number of Mexicans, have access to e-cigarettes. Decision makers and advocates should consider e-cigarette regulations as recommended by the WHO, at the same time Mexico must invest in the infrastructure needed to enforce these regulations.