Papel de N-acetilcisteína (NAC) en pacientes con tabaquismo / Role of N-acetylcysteine (NAC) in patients with smoking

Antecedentes y objetivo. El tabaquismo es el principal factor de riesgo de la enfermedad pulmonar obstructiva crónica (EPOC). N-acetilcisteína (NAC) es un agente mucolítico con propiedades antioxidantes y antiinflamatorias que ha demostrado ser eficaz en la reducción de la tasa de exacerbaciones y mejoría clínica de los pacientes con EPOC. El objetivo del trabajo es conocer la opinión de terapeutas expertos acerca del perfil o perfiles de los pacientes fumadores que pueden ser candidatos al uso de NAC. Métodos. Se efectuó una encuesta distribuida a las unidades de tabaquismo de España y una Reunión de Expertos en tabaquismo y EPOC, en la que los Expertos pudieron debatir abiertamente los tópicos seleccionados. Resultados. Los expertos reconocieron el papel del tabaquismo en la generación de estrés oxidativo y concordaron en emplear la terapia mucolítica/antioxidante para fumadores o exfumadores con síntomas respiratorios. Se debatió la necesidad de ampliar las indicaciones de esta terapia a otros perfiles de pacientes. Se señaló también el potencial efecto preventivo de la NAC sobre el daño pulmonar por su acción antioxidante, aunque se necesitaría más evidencia en este ámbito específico del tabaquismo. Se puso énfasis en diferenciar la dosis de NAC como mucolítico (600 mg/día)o antioxidante (1.200 mg/día). Conclusiones. Los expertos valoraron a NAC como un fármaco bien tolerado, de sencillo uso, con un conocido buen perfil de seguridad y un gran potencial para lograr los objetivos terapéuticos por su alta capacidad antioxidante. (AU)

Background and objective. The smoking habit is the main risk factor for chronic obstructive pulmonary disease (COPD). N-Acetylcysteine (NAC) is a mucolytic agent with antioxidant and anti-inflammatory properties that has been demonstrated to be effective in the reduction of the rate of exacerbations and clinical improvement of patients with COPD. This study aims to know the opinion of the expert therapists on the profile(s) of the patients who smoke and who may be candidates for the use of NAC. Methods. A survey was performed, distributing it to the smoking units in Spain and to a Meeting of Experts on the smoking habit and COPD in which the Experts could openly debate on the selected topics. Results. The experts recognized the role of the smoking habit in the generation of oxidative stress and agreed to use the mucolytic/antioxidant treatment for smokers or ex-smokers with respiratory symptoms. The need to extend the indications of this therapy to other patient profiles was debated. The potential preventive effect of NAC on lung damage due to its antioxidant action was also pointed out, although more evidence in this special area of the smoking habit would be necessary. Emphasis was placed on differentiating the NAC dose as a mucolytic (600 mg/day) or as an antioxidant (1,200 mg/day). Conclusions. The experts evaluated NAC as a drug that is well-tolerated, easy-to-use, with a known good safety profile and having great potential to achieve the therapeutic objectives due to its high antioxidant capacity. (AU)

Protocolo asistencial clínico-psicológico para el tratamiento del tabaquismo con citisina / Clinical-psychological care protocol for the treatment of smoking with cytisine

Citisina es un tratamiento farmacológico del tabaquismo que ha sido introducido recientemente en nuestro país. Los estudios realizados con el mismo durante los últimos años muestran que es un tratamiento eficaz y seguro utilizado a dosis decrecientes durante un periodo de 25 días. Sus específicas características de dosis y tiempo de duración hacen recomendable que se diseñe un protocolo asistencial clínico-psicológico para ser desarrollado durante la utilización de citisina. Un grupo multidisciplinario de profesionales sanitarios expertos en tabaquismo han consensuado un protocolo que recomiendan para llevar a cabo en aquellos pacientes a los que se prescriba citisina como fármaco para dejar de fumar. (AU)

Cytisine is a smoking cessation medication that has appeared recently in Spain. It is effective and safe for helping smokers to quit using for 25 days. Its specific characteristicis in doses and duration recommends to desing a protocol clinical-psychological. A multidisciplinary group of health professionals experts on smoking cessation has designed a protocol to develop with patients who are receiving cytisineas medication for smoking cessation. (AU)

Citisina: nuevo fármaco para dejar de fumar en España / Cytisine: New drug for smoking cessation in Spain

Citisina es un alcaloide que se origina en las semillasde algunas plantas pertenecientes al género Legumi-nosae (Fabaceae). Recientemente ha sido aprobado enEspaña como nuevo fármaco de prescripción para eltratamiento del tabaquismo. A lo largo de esta revisiónse analiza su mecanismo de acción y los resultadosde los principales ensayos clínicos y metaanálisis quevaloran su eficacia y seguridad de uso.(AU)

Cytisine is an alkaloid that originates in the seeds ofsome plants belonging to the Leguminosae (Fabaceae)genera. It has been approved recently in Spain as a newprescription drug for the treatment of the smokinghabit. In this review, its action mechanism and theresults of the principal clinical trials as well as themeta-analyses that evaluate its efficacy and safety ofuse are analyzed.(AU)

Cost-benefit analysis of funding smoking cessation before surgery.

BACKGROUND: Smoking at the time of surgery is associated with postoperative complications. Quitting smoking before surgery is linked to fewer complications during the hospital stay. This work analysed whether a smoking cessation intervention before surgery is economically worthwhile when funded by the National Health System (NHS) in Spain. METHODS: The economic analysis considered costs and benefits of the intervention to the NHS for the year 2016. The population who would benefit comprised adult smokers who were ready to quit and for whom surgery requiring admission to hospital was planned. The intervention, a combination of medical counselling and use of a smoking cessation drug which should occur 12 weeks before surgery, considered one attempt only to quit smoking. Benefits were costs avoided by averting postoperative complications if cessation was successful. The analysis compared the net economic outcome (benefit minus cost of intervention) and the return on investment, for intervention funded by the NHS versus the current situation without funding. RESULTS: Smoking cessation increased by 21·7 per cent with funding; the rate was 32·5 per cent when funded versus 10·7 per cent without funding, producing 9611 extra quitters. The cost per averted smoker was €1753 with a benefit of €503, achieving a net economic benefit of €4·8 million per year. Given the annual cost of the intervention (€17·4 million, of which €5·6 million (32·5 per cent) represents drugs), the return on investment was 28·7 per cent annually, equivalent to €1·29 per €1 of investment. CONCLUSION: From the perspective of the Spanish NHS, the benefit of funding smoking cessation before surgery, in terms of healthcare cost savings, appears to greatly outweigh the costs.

ANTECEDENTES: Ser fumador activo hasta el momento de la cirugía se asocia con complicaciones postoperatorias. Se ha descrito una disminución de las complicaciones durante la hospitalización al abandonar el hábito de fumar antes de la cirugía. Este trabajo analizó si una intervención preoperatoria para dejar de fumar es económicamente beneficiosa cuando se financia por el Sistema Nacional de Salud (SNS) en España. MÉTODOS: En el análisis económico se consideraron tantos los costes como los beneficios de la intervención para el SNS, en euros, correspondientes al año 2016. La población que se beneficiaría eran fumadores adultos dispuestos a dejar de fumar, en los que se programase una intervención quirúrgica con hospitalización. La intervención, una combinación de asesoramiento médico y tratamiento farmacológico para dejar de fumar, se llevó a cabo a las 12 semanas antes de la cirugía, considerando únicamente un intento para dejar de fumar. Los beneficios fueron los costes evitados por una reducción en la tasa de complicaciones postoperatorias en los casos en los que se hubiese conseguido la eliminación del hábito. El análisis comparó el resultado económico neto (beneficio menos coste de la intervención) y el retorno de la inversión (return on investment, ROI), cuando la intervención era financiada por el SNS en comparación con la situación actual sin financiamiento público. RESULTADOS: La tasa de abandono del hábito tabáquico aumentó en un 21,8%; 32,5% cuando se financiaba frente al 10,7% sin financiación, consiguiendo un extra de 9.611 personas que dejaron de fumar. El coste por fumador rescatado fue de €1753 con un beneficio de €503, por lo que el beneficio económico neto conseguido fue de €4,8 millones por año. Dado que el coste anual de la intervención (€17,4 millones, de los cuales €5,6 millones corresponden a fármacos (32%)), el ROI anual fue del 28,7% con un beneficio de €1,29 por cada €1 de inversión. CONCLUSIÓN: Desde la perspectiva del SNS español, los beneficios de financiar el abandono del hábito de fumar en el preoperatorio de los pacientes, en términos de ahorro de costes parecen ser muy superiores a los costes de la intervención.

[Analysis of quality of life in patients with Chronic Obstructive Pulmonary Disorder (COPD) who give up smoking]. / Análisis de la calidad de vida en pacientes con enfermedad pulmonar obstructiva crónica (EPOC) que dejan de fumar.

OBJECTIVE: To analyse the impact in COPD patients' quality of life who stop smoking. PATIENTS AND METHODS: We studied a group of COPD patients who received smoking cessation treatment. All patients were treated with bronchodilators according to the severity of their disorder. This treatment was not changed during the process of smoking cessation. Patients received a smoking cessation programme that consisted of a combination of pharmacological treatment plus cognitive-behavioural treatment. All subjects fill in CAT questionnaire before starting smoking cessation programme and after 6 months of abstinence. All subjects included had stop smoking. RESULTS: The study included 59 patients, with 27 (45.8%) males, and a mean age of 61.8 (7.5) years. Mean CAT score before quitting was 18.9 (7.3) points, and after 6 months of abstinence was 8.1 (6.1) points, P=.038. Multiple regression analysis showed: a) the higher the baseline CAT score the greater is the difference after quitting, at 6 months, at same age, gender, and grade of severity of COPD, and b) the older the age, the lower is the difference between baseline CAT score and the 6 months CAT score. CONCLUSIONS: Smoking cessation is associated with improvement in the quality of life in COPD patients. Those with worse quality of life get the biggest benefit from quitting, although this difference can be diminished in ageing patients.

[Bibliometric analysis of IBERPOC and EPI-SCAN studies. Contribution of the smoking variable on the iberpoc study]. / Análisis bibliométrico de los estudios IBERPOC y EPI-SCAN. Contribución de la temática tabaquismo al estudio IBERPOC.

OBJECTIVES: The aim of this study was to perform a bibliometric analysis of EPI-SCAN and IBERPOC studies using the Science Citation Index and Scopus databases, and to determine the overall impact with the impact of smoking on IBERPOC as a secondary objective. METHOD: A general searching was conducted in Science Citation Index-Expanded through the Web of Science (WoS) (Thomson Reuters) platform and Scopus on 23 March 2015. The search strategy included the terms "iberpoc" OR "episcan" was performed on 15 October 2015. RESULTS: A total of 24 publications were obtained; 13 from IBERPOC study (9 on "COPD" and 4 for "tobacco"), with 11 from the EPI-SCAN (All COPD) study. A total of 841 WoS citations were obtained (445 IBERPOC [99 of tobacco]), and 1,442 from Scopus (963 IBERPOC [144 tobacco]). The theme "tobacco" contributed with 22.24% and 14.95% of total citations in WoS and Scopus, respectively to the IBERPOC study. It was found that Scopus citations were newer, and a similar impact from both WoS studies was detected, although the IBERPOC impact was greater in Scopus. Collaborative networks of institutions and authors of both studies were identified. CONCLUSIONS: There is an important productivity and impact of both studies. Scopus citations are newer than those in WoS. The "tobacco" variable added IBERPOC impact and visibility. There was high density, accessibility, and cohesion in collaborative networks of both studies.

Effectiveness and safety of varenicline and nicotine replacement therapy among mental health patients: A retrospective cohort study.

OBJECTIVE: To analyse the effectiveness and safety of two smoking cessation medications (varenicline and nicotine patches) in patients with controlled psychiatric disorders in daily practice in a Smoking Cessation Service. METHODS: This is a retrospective cohort study. It was carried on at a smoking cessation clinic in Madrid and used a convenience sampling strategy. We reviewed medical records of patients diagnosed with psychiatric disorders who attended a Smoking Cessation Service. All patients received similar treatment programme: a combination of pharmacological treatment (varenicline or nicotine replacement therapy) and intensive cognitive-behavioural therapy. RESULTS: The group included 349 patients (38.4% men). Mean age (SD) 49.6 (10.5) years. 28.3 (12.8) cigarettes per day. 156 subjects achieved 9-24 weeks continuous abstinence (44.7%), in 39% of those who used nicotine patches and in 53.7% of those who used varenicline. OR: 1.64 (95% CI: 1.03-2.61; p=0.036). Success rates were higher in men; OR 1.85 (95% CI: 1.12-3.04; p=0.016). High levels of CO and high daily cigarette use were associated with poorer success rates (OR: 0.98, 95% CI: 0.96-0.99, p=0.007; and OR: 0.98, 95% CI: 0.96-1.00, p=0.045), respectively. Nausea and pruritus were the most common adverse events. No cases of suicidal ideation or behaviour were found. CONCLUSIONS: Varenicline and nicotine patches could be safe and effective smoking cessation treatments for patients with psychiatric disorders in daily clinical practice.

Avances del conocimiento en neurofisiología de la nicotina en los últimos 20 años / Advances in knowledge in neurophysiology of nicotine in the last 20 years

Aunque las características adictivas del tabaco ya habían sido reconocidas hace muchos años, no fue hasta hace algunas décadas cuando los conceptos modernos sobre la adicción a la nicotina se observaron que dependían de la neurotransmisión colinérgica y de los receptores de acetilcolina. La aplicación de nuevas técnicas de investigación y el estudio en animales de experimentación han propiciado importantes avances en el conocimiento de la dependencia por la nicotina al conocer sus mecanismos biológicos, celulares y genéticos. Presentamos en este trabajo una aproximación histórica de la investigación desarrollada en este campo (AU)

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