COP27 Climate Change Conference: urgent action needed for Africa and the world / Conferencia sobre cambio climático COP27: se necesita una acción urgente para África y el mundo

Wealthy nations must step up support for Africa and vulnerable countries in addressing past, present and future impacts of climate change The 2022 report of the Intergovernmental Panel on Climate Change (IPCC) paints a dark picture of the future of life on earth, characterised by ecosystem collapse, species extinction, and climate hazards such as heatwaves and floods (1). These are all linked to physical and mental health problems, with direct and indirect consequences of increased morbidity and mortality. To avoid these catastrophic health effects across all regions of the globe, there is broad agreement­as 231 health journals argued together in 2021­that the rise in global temperature must be limited to less than 1.5oC compared with pre-industrial levels.

El informe de 2022 del Panel Intergubernamental sobre el Cambio Climático (IPCC por sus siglas en inglés) pinta un panorama sombrío del futuro de la vida en la tierra, caracterizado por el colapso de los ecosistemas, la extinción de (1)especies y los peligros climáticos como olas de calor e inundaciones. Todos ellos están vinculados a problemas de salud física y mental, con consecuencias directas e indirectas de aumento de la morbilidad y mortalidad. Para evitar estos efectos catastrócos para la salud en todas las regiones del mundo, existe un amplio acuerdo, como argumentaron 231 revistas de salud juntas en 2021, en que el aumento de la temperatura global debe limitarse a menos de 1,5 °C en comparación con los niveles preindustriales

Research priorities to address the global burden of chronic obstructive pulmonary disease (COPD) in the next decade.

BACKGROUND: The global prevalence of chronic obstructive pulmonary disease (COPD) has increased markedly in recent decades. Given the scarcity of resources available to address global health challenges and respiratory medicine being relatively under-invested in, it is important to define research priorities for COPD globally. In this paper, we aim to identify a ranked set of COPD research priorities that need to be addressed in the next 10 years to substantially reduce the global impact of COPD. METHODS: We adapted the Child Health and Nutrition Research Initiative (CHNRI) methodology to identify global COPD research priorities. RESULTS: 62 experts contributed 230 research ideas, which were scored by 34 researchers according to six pre-defined criteria: answerability, effectiveness, feasibility, deliverability, burden reduction, and equity. The top-ranked research priority was the need for new effective strategies to support smoking cessation. Of the top 20 overall research priorities, six were focused on feasible and cost-effective pulmonary rehabilitation delivery and access, particularly in primary/community care and low-resource settings. Three of the top 10 overall priorities called for research on improved screening and accurate diagnostic methods for COPD in low-resource primary care settings. Further ideas that drew support involved a better understanding of risk factors for COPD, development of effective training programmes for health workers and physicians in low resource settings, and evaluation of novel interventions to encourage physical activity. CONCLUSIONS: The experts agreed that the most pressing feasible research questions to address in the next decade for COPD reduction were on prevention, diagnosis and rehabilitation of COPD, especially in low resource settings. The largest gains should be expected in low- and middle-income countries (LMIC) settings, as the large majority of COPD deaths occur in those settings. Research priorities identified by this systematic international process should inform and motivate policymakers, funders, and researchers to support and conduct research to reduce the global burden of COPD.

Chronic airflow obstruction and ambient particulate air pollution.

Smoking is the most well-established cause of chronic airflow obstruction (CAO) but particulate air pollution and poverty have also been implicated. We regressed sex-specific prevalence of CAO from 41 Burden of Obstructive Lung Disease study sites against smoking prevalence from the same study, the gross national income per capita and the local annual mean level of ambient particulate matter (PM2.5) using negative binomial regression. The prevalence of CAO was not independently associated with PM2.5 but was strongly associated with smoking and was also associated with poverty. Strengthening tobacco control and improved understanding of the link between CAO and poverty should be prioritised.

Prevalence and Population-Attributable Risk for Chronic Airflow Obstruction in a Large Multinational Study.

Rationale: The Global Burden of Disease program identified smoking and ambient and household air pollution as the main drivers of death and disability from chronic obstructive pulmonary disease (COPD). Objectives: To estimate the attributable risk of chronic airflow obstruction (CAO), a quantifiable characteristic of COPD, due to several risk factors. Methods: The Burden of Obstructive Lung Disease study is a cross-sectional study of adults, aged ≥40, in a globally distributed sample of 41 urban and rural sites. Based on data from 28,459 participants, we estimated the prevalence of CAO, defined as a postbronchodilator FEV1-to-FVC ratio less than the lower limit of normal, and the relative risks associated with different risk factors. Local relative risks were estimated using a Bayesian hierarchical model borrowing information from across sites. From these relative risks and the prevalence of risk factors, we estimated local population attributable risks. Measurements and Main Results: The mean prevalence of CAO was 11.2% in men and 8.6% in women. The mean population attributable risk for smoking was 5.1% in men and 2.2% in women. The next most influential risk factors were poor education levels, working in a dusty job for ≥10 years, low body mass index, and a history of tuberculosis. The risk of CAO attributable to the different risk factors varied across sites. Conclusions: Although smoking remains the most important risk factor for CAO, in some areas, poor education, low body mass index, and passive smoking are of greater importance. Dusty occupations and tuberculosis are important risk factors at some sites.

Pulmonary functions of patients with isolated mandibular fractures: a preliminary report.

OBJECTIVES: The aim of this study was to evaluate pulmonary function in patients with mandibular fractures and to determine the pattern of pulmonary functions in these patients. MATERIALS AND METHODS: This was a cross-sectional study of pulmonary functions in Nigerian non-smoking patients with isolated mandibular fractures managed at our health institution from December 2015 to June 2017. Forced vital capacity (FVC), forced expiratory volume in one second (FEV1), peak expiratory flow rate (PEFR), and ratio of FEV1 to FVC (FEV1/FVC) were measured for all participants using a portable spirometer just before treatment. The pulmonary indices were compared with the predicted reference values for Nigerians to determine the respiratory pattern. RESULTS: Forty participants consisting of six females (15.0%) and thirty-four males (85.0%) with a female to male ratio of 1:5.7 were included in this study. The mean patient age was 34.5±13.1 years (range, 17-63 years). The mean FVC, FEV1, FEV1/FVC, and PEFR were 3.8±1.2 L, 3.0±1.0 L, 74.3%±13.8%, and 5.2±2.2 L/s, respectively. Comparison of data with predicted values revealed that 17 subjects (42.5%) had normal pulmonary function pattern while 23 subjects (57.5%) had features suggestive of obstructive and restrictive pulmonary function patterns. CONCLUSION: Isolated mandibular fractures presented with abnormal pulmonary function pattern.

Challenges of diagnosing and managing bronchiectasis in resource-limited settings: a case study.

Bronchiectasis, once an orphan disease is now gaining renewed attention as a significant cause of morbidity and mortality. It is a morphologic term used to describe abnormal, irreversibly dilated and thick-walled bronchi, with many etiologies. The management of bronchiectasis can be challenging because its pathogenetic mechanisms is still evolving. Its diagnosis and management is particularly more demanding especially in resource-limited settings like Nigeria because of delayed diagnosis and improper management with devastating consequences, hence this case study.

Health-Related Quality of Life (HRQoL) scores vary with treatment and may identify potential defaulters during treatment of tuberculosis.

INTRODUCTION: Nigeria ranks third among the 22 high-burden TB countries in the world. With the availability of effective treatment strategies, and more patients surviving the disease, assessment of Patient Reported Outcomes (PROs) has become imperative to assist with patient evaluation of measured outcomes and thus improve morbidity. Literature is scarce on assessment and impact of chemotherapy on Health-Related Quality of Life (HRQoL) for patients with tuberculosis. AIM: This study evaluates the variation in Health-Related Quality of Life (HRQoL) in pulmonary TB patients during the intensive phase of treatment. METHODS: We recruited patients with pulmonary TB (PTB), from 3 different TB clinics across Ife Ijesha Zone, Osun State, Nigeria. Consenting patients were administered Short Form-36 HRQoL questionnaire at recruitment and at the end of intensive phase of treatment. HRQoL scores were compared at these two-time points, the degrees of changes were calculated and relationships with some. Directly Observed Therapy-Short (DOTS) course outcome measures were obtained. Logistic regression was used to identify factors associated with greatest change in HRQoL scores. RESULTS: Of the 130 recruited patients, we analysed data for 126 patients who met the inclusion criteria. Mean age was 36.7(SD15.5). The overall mean HRQoL score obtained at enrolment was 43.18 (SD 17.2) and 60.22 (SD19.83) at end of 2 months; mean change =17.04 p<0.001). The least change was on the emotional well-being domain (mean change = 4.24, p=0.05). Predictor of significant change in HRQoL scores were previous history of TB, HIV status and TB severity, p<0.05 each. High physical functioning score was a strong predictor of defaulters (OR = 5.3; 95%CI: 2.11-9.05, p = 0.01). CONCLUSION: Emotional domain is least affected by PTB while younger patients with no physical impairment are more likely to default treatment. Various aspects of HRQoL can be a useful tool for patient's evaluation and outcome prediction.

Domestic solid fuel combustion in an adult population in Nigeria: A cross sectional analysis of association with respiratory symptoms, quality of life and lung function.

BACKGROUND AND OBJECTIVES: We examined the association of respiratory symptoms, health status, and lung function with the use of solid fuel (wood, charcoal, coal or crop residue) for cooking or heating in a predominantly non-smoking population. METHODS: Using the protocol of the Burden of Obstructive Lung Diseases (BOLD) initiative, we collected representative population data using questionnaires and spirometry tests. We categorized solid fuel use into 'never user', 'ex user' and 'current user' based on responses to the survey. We developed regression models to evaluate the relation between use of solid fuel and the prevalence of respiratory symptoms, quality of life and lung function adjusting for confounding variables. RESULTS: Out of 1147 respondents with complete information on domestic fuel type, 33% were 'never-users', 19% were 'ex-users' while 48% reported current use of solid fuel for domestic cooking and/or indoor heating. Compared with never-users, current solid fuel users were more likely to report cough (OR: 1.7, 95% CI: 1.0, 2.9), cough or phlegm (OR: 1.6, 95% CI: 1.0, 2.5) and the association was stronger among women (OR: 3.0, 95% CI: 1.3, 7.1 and OR: 2.3, 95% CI: 1.1, 5.2, respectively). Current solid fuel users also had lower mental health status (coefficient: ?1.5, 95% CI: ?2.8, - 0.2) compared with the group of never-users. Current or previous domestic use of solid fuels for cooking or heating was not associated with higher prevalence of chronic airflow obstruction (FEV1/FVC < LLN). CONCLUSIONS: Using solid fuel for domestic cooking or heating was associated with a higher risk of cough or phlegm and a lower mental quality of life. However we found no significant effect in the prevalence of chronic airflow obstruction in Ife, Nigeria.