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Background
The objective of this study was to investigate the effects of reduction, cessation, and resumption of smoking on cancer development.
Methods
The authors identified 893,582 participants who currently smoked, had undergone a health scr
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eening in 2009, and had a follow-up screening in 2011. Among them, 682,996 participated in a third screening in 2013. Participants were categorized as quitters, reducers I (≥50% reduction), reducers II (<50% reduction), sustainers (referent), or increasers (≥20% increase). Outcome data were obtained through December 31, 2018.
Results
Reducers I exhibited a decreased risk of all cancers (adjusted hazard ratio [aHR], 0.96; 95% confidence interval [CI], 0.93-0.99), smoking-related cancers (aHR, 0.95; 95% CI, 0.92-0.99), and lung cancer (aHR, 0.83; 95% CI, 0.77-0.88). Quitters had the lowest risk of all cancers (aHR, 0.94; 95% CI, 0.92-0.96), smoking-related cancers (aHR, 0.91; 95% CI, 0.89-0.93), and lung cancer (aHR, 0.79; 95% CI, 0.76-0.83). In further analysis with 3 consecutive screenings, additional smoking reduction (from reducers II to reducers I) lowered the risk of lung cancer (aHR, 0.74; 95% CI, 0.58-0.94) in comparison with sustainers. Quitting among reducers I further decreased the risk of all cancers (aHR, 0.90; 95% CI, 0.80-1.00), smoking-related cancers (aHR, 0.81; 95% CI, 0.81-0.92), and lung cancer (aHR, 0.66; 95% CI, 0.52-0.84) in comparison with sustainers. Smoking resumption after quitting, even at a lower level, increased the risk of smoking-related cancers (aHR, 1.19; 95% CI, 1.06-1.33) and lung cancer (aHR, 1.48; 95% CI, 1.21-1.80) in comparison with sustained quitting.
Conclusions
Smoking cessation and, to a lesser extent, smoking reduction decreased the risks of cancer. Smoking resumption increased cancer risks in comparison with sustained quitting.
more
The document titled "Early Warning Signs of COPD" from the American Lung Association outlines what COPD is, its risk factors, and the importance of recognizing early symptoms such as persistent cough, breathlessness, and frequent chest infections. I
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t emphasizes the need for early consultation with a healthcare provider and diagnostic testing like spirometry to confirm COPD. Early diagnosis and treatment can help slow disease progression and improve quality of life.
more
The document is an instructional guide in english on how to use a metered-dose inhaler (MDI) with a spacer. It provides detailed, step-by-step instructions for using the device effectively to manage respiratory conditions like asthma. The guide emphasizes the importance of correct technique, prepara
...
tion of the inhaler, and proper administration to maximize the medication's effectiveness. It also highlights essential points for cleaning the spacer and mentions contacting a healthcare professional for additional assistance or guidance.
more
The document is an instructional guide in arabic on how to use a metered-dose inhaler (MDI) with a spacer. It provides detailed, step-by-step instructions for using the device effectively to manage respiratory conditions like asthma. The guide emphasizes the importance of correct technique, preparat
...
ion of the inhaler, and proper administration to maximize the medication's effectiveness. It also highlights essential points for cleaning the spacer and mentions contacting a healthcare professional for additional assistance or guidance.
more
The document is an instructional guide in Burmese on how to use a metered-dose inhaler (MDI) with a spacer. It provides detailed, step-by-step instructions for using the device effectively to manage respiratory conditions like asthma. The guide emphasizes the importance of correct technique, prepara
...
tion of the inhaler, and proper administration to maximize the medication's effectiveness. It also highlights essential points for cleaning the spacer and mentions contacting a healthcare professional for additional assistance or guidance.
more
The document is an instructional guide in Portuguese on how to use a metered-dose inhaler (MDI) with a spacer. It provides detailed, step-by-step instructions for using the device effectively to manage respiratory conditions like asthma. The guide emphasizes the importance of correct technique, prep
...
aration of the inhaler, and proper administration to maximize the medication's effectiveness. It also highlights essential points for cleaning the spacer and mentions contacting a healthcare professional for additional assistance or guidance.
more
The document is an instructional guide in somali on how to use a metered-dose inhaler (MDI) with a spacer. It provides detailed, step-by-step instructions for using the device effectively to manage respiratory conditions like asthma. The guide emphasizes the importance of correct technique, preparat
...
ion of the inhaler, and proper administration to maximize the medication's effectiveness. It also highlights essential points for cleaning the spacer and mentions contacting a healthcare professional for additional assistance or guidance.
more
The document is an instructional guide in Spanish on how to use a metered-dose inhaler (MDI) with a spacer. It provides detailed, step-by-step instructions for using the device effectively to manage respiratory conditions like asthma. The guide emphasizes the importance of correct technique, prepara
...
tion of the inhaler, and proper administration to maximize the medication's effectiveness. It also highlights essential points for cleaning the spacer and mentions contacting a healthcare professional for additional assistance or guidance.
more
The document is an instructional guide by the American Lung Association on how to properly use a metered-dose inhaler (MDI) with a valved holding chamber (spacer) and mask, specifically in Swahili. It provides step-by-step directions for preparing a
...
nd using the inhaler to ensure effective medication delivery for conditions such as asthma. The guide includes practical tips, cleaning advice, and contact information for further support from respiratory professionals through the American Lung Association's helpline.
more
The document provides step-by-step instructions for using a Flexhaler dry powder inhaler effectively. It emphasizes proper inhalation technique, including priming the device, loading a dose, and breathing correctly. It also advises users to rinse their mouth after use and highlights the importance o
...
f bringing medications to appointments for review by healthcare providers.
more
This journal provides information about the definition of Asthma, about its measurement in populations, the global burden of disease and the outcomes of childhood Asthma. It continues with the causes and treatment options of Asthma, followed by an outlook into the future.
Position statement for adult and paediatric spirometry in South Africa: 2022 update
Maree, D.M.; Swanepoel, R.A.; Swart, F. et al.
African Journal of Thoracic and Critical Care Medicine
(2022)
CC
Spirometry is required as part of the comprehensive evaluation of both adult and paediatric individuals with suspected or confirmed respiratory diseases and occupational assessments. It is used in the categorisation of impairment, grading of severity, assessment of potential progression and response
...
to interventions. Guidelines for spirometry in South Africa are required to improve the quality, standardisation and usefulness in local respiratory practice. The broad principles of spirometry have remained largely unchanged from previous versions of the South African Spirometry Guidelines; however, minor adjustments have been incorporated from more comprehensive international guidelines, including adoption of the Global Lung Function Initiative 2012 (GLI 2012) spirometry reference equations for the South African population.
All equipment should have proof of validation regarding resolution and consistency of the system. Daily calibration must be performed, and equipment quality control processes adhered to. It is important to have standard operating procedures to ensure consistency and quality and, additionally, strict infection control as highlighted during the COVID-19 pandemic.
Adequate spirometry relies on a competent, trained operator, accurate equipment, standardised operating procedures, quality control and patient co-operation. All manoeuvres must be performed strictly according to guidelines, and strict quality assurance methods should be in place, including acceptability criteria (for any given effort) and repeatability (between efforts).
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Asthma is chronic inflammation of the airways in the lungs.
In asthma, the airways in the lung narrow due to swelling of
the mucosa, increased mucus production, and spasm of the airways.
Asthma is a heterogeneous condition characterised by chronic inflammation and variable expiratory airflow limitation, as well as airway reversibility. The diagnosis of asthma in young children is limited by the inability to perform objective lung fu
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nction testing in this group of patients and the wide variety of conditions that can phenotypically present with asthma-like symptoms.
This article provides an evidence-based approach for clinicians to accurately diagnose asthma in young children and to assess the level of control to guide therapeutic decisions.
The South African Childhood Asthma Working Group (SACAWG) convened in January 2017 with task groups, each headed by a section leader, constituting the editorial committee on assessment of asthma epidemiology, diagnosis, control, treatments, novel treatments and self-management plans. The asthma diagnosis and control task groups reviewed the available scientific literature and assigned evidence according to the Grades of Recommendation Assessment, Development and Evaluation (GRADE) system, providing recommendations based on current evidence.
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Asthma can be a serious disease, but if you understand
the disease and take the right medication to control it, you
should have no problems or symptoms due to your asthma,
even when you are pregnant. To be free from asthma
attacks, you should also check your
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lung function and use
an action plan if any symptoms occur.
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The goal of asthma treatment is to obtain clinical control and reduce future risks to the patient. To reach this goal in children with asthma, ongoing monitoring is essential. While all components of asthma, such as symptoms, lung function, bronchia
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l hyperresponsiveness and inflammation, may exist in various combinations in different individuals, to date there is limited evidence on how to integrate these for optimal monitoring of children with asthma. The aims of this ERS Task Force were to describe the current practise and give an overview of the best available evidence on how to monitor children with asthma.
22 clinical and research experts reviewed the literature. A modified Delphi method and four Task Force meetings were used to reach a consensus.
This statement summarises the literature on monitoring children with asthma. Available tools for monitoring children with asthma, such as clinical tools, lung function, bronchial responsiveness and inflammatory markers, are described as are the ways in which they may be used in children with asthma. Management-related issues, comorbidities and environmental factors are summarised.
Despite considerable interest in monitoring asthma in children, for many aspects of monitoring asthma in children there is a substantial lack of evidence.
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The pharmacological management of asthma has changed considerably in recent decades, as it has come to be understood that it is a complex, heterogeneous disease with different phenotypes and endotypes. It is now clear that the goal of asthma treatment should be to achieve and maintain control of the
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disease, as well as to minimize the risks (of exacerbations, disease instability, accelerated loss of lung function, and adverse treatment effects). That requires an approach that is personalized in terms of the pharmacological treatment, patient education, written action plan, training in correct inhaler use, and review of the inhaler technique at each office visit. A panel of 22 pulmonologists was invited to perform a critical review of recent evidence of pharmacological treatment of asthma and to prepare this set of recommendations, a treatment guide tailored to use in Brazil. The topics or questions related to the most significant changes in concepts, and consequently in the management of asthma in clinical practice, were chosen by a panel of experts. To formulate these recommendations, we asked each expert to perform a critical review of a topic or to respond to a question, on the basis of evidence in the literature. In a second phase, three experts discussed and structured all texts submitted by the others. That was followed by a third phase, in which all of the experts reviewed and discussed each recommendation. These recommendations, which are intended for physicians involved in the treatment of asthma, apply to asthma patients of all ages.
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The pharmacological management of asthma has changed considerably in recent decades, as it has come to be understood that it is a complex, heterogeneous disease with different phenotypes and endotypes. It is now clear that the goal of asthma treatment should be to achieve and maintain control of the
...
disease, as well as to minimize the risks (of exacerbations, disease instability, accelerated loss of lung function, and adverse treatment effects). That requires an approach that is personalized in terms of the pharmacological treatment, patient education, written action plan, training in correct inhaler use, and review of the inhaler technique at each office visit. A panel of 22 pulmonologists was invited to perform a critical review of recent evidence of pharmacological treatment of asthma and to prepare this set of recommendations, a treatment guide tailored to use in Brazil. The topics or questions related to the most significant changes in concepts, and consequently in the management of asthma in clinical practice, were chosen by a panel of experts. To formulate these recommendations, we asked each expert to perform a critical review of a topic or to respond to a question, on the basis of evidence in the literature. In a second phase, three experts discussed and structured all texts submitted by the others. That was followed by a third phase, in which all of the experts reviewed and discussed each recommendation. These recommendations, which are intended for physicians involved in the treatment of asthma, apply to asthma patients of all ages.
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Chronic obstructive pulmonary disease (COPD) is a complex disease that requires differential diagnosis and proper classification to identify appropriate therapy. Nonpharmacologic therapy and preventative measures should be utilized to prevent worsening of disease, symptoms, and complications. The Gl
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obal Initiative for Chronic Obstructive Lung Disease (GOLD) guidelines classify a patient’s COPD and provide recommendations for first-line treatment. The 2021 update included information regarding the use of e-cigarettes as nicotine replacement, triple therapy, and how the SARS-CoV-2 virus impacted patients with COPD. This article will focus on the diagnosis, classification, and treatment of COPD, as well as recently updated information regarding the use of e-cigarettes and the impact of COVID-19.
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Severe and difficult asthma in a low- and middle-income country (LMIC) can relate to lack of availability of basic medications; potentially reversible factors such as poor adherence or comorbidities such as obesity inhibiting a good response to treatment; and (rarely) true severe, therapy-resistant
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asthma. However, definitions of severity should encompass not merely doses of prescribed medication, but also underlying risk. The nature of asthmatic airway disease shows geographical variation, and LMIC asthma should not be assumed to be phenotypically the same as that in high-income countries (HICs). The first assessment step is to ensure another diagnosis is not being missed. Largely, political action is needed if children with asthma are to get access to basic medications. If a child is apparently not responding to low dose, simple medications, the next step is not to increase the dose but perform a detailed assessment of what factors (for example co-morbidities such as obesity, or social factors like poor adherence) are inhibiting a treatment response; in most cases, an underlying reason can be found. An assessment of risk of future severe asthma attacks, side-effects of medication and impaired lung development is also important. True severe, therapy-resistant asthma is rare and there are multiple underlying molecular pathologies. In HICs, steroid-resistant eosinophilia would be treated with omalizumab or mepolizumab, but the cost of these is prohibitive in LMICs, the biomarkers of successful therapy are likely only relevant to HICs. In LMICs, a raised blood eosinophil count may be due to parasites, so treating asthma based on the blood eosinophil count may not be appropriate in these settings.
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