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1.
BMC Fam Pract ; 22(1): 210, 2021 10 20.
Artigo em Inglês | MEDLINE | ID: mdl-34666682

RESUMO

BACKGROUND: Chronic pain and insomnia have a complex, bidirectional relationship - addressing sleep complaints alongside pain may be key to alleviating patient-reported distress and disability. Healthcare professionals have consistently reported wanting to offer psychologically informed chronic pain management at the primary care level. Research in secondary care has demonstrated good treatment efficacy of hybrid CBT for chronic pain and insomnia. However, primary care is typically the main point of treatment entry, hence may be better situated to offer treatments using a multidisciplinary approach. In this study, primary care service providers' perception of feasibility for tackling pain-related insomnia in primary care was explored. METHODS: The data corpus originates from a feasibility trial exploring hybrid CBT for chronic pain and insomnia delivered in primary care. This formed three in-depth group interviews with primary care staff (n = 9) from different primary care centres from the same NHS locale. All interviews were conducted on-site using a semi-structured approach. Verbal data was recorded, transcribed verbatim and analysed using the thematic analysis process. RESULTS: Eight themes were identified - 1) Discrepant conceptualisations of the chronic pain-insomnia relationship and clinical application, 2) Mismatch between patients' needs and available treatment offerings, 3) Awareness of psychological complexities, 4) Identified treatment gap for pain-related insomnia, 5) Lack of funding and existing infrastructure for new service development, 6) General shortage of psychological services for complex health conditions, 7) Multidisciplinary team provision with pain specialist input, and 8) Accessibility through primary care. These mapped onto four domains - Current understanding and practice, Perceived facilitators, Perceived barriers, Ideal scenarios for a new treatment service - which reflected the focus of our investigation. Taken together these provide key context for understanding challenges faced by health care professionals in considering and developing a new clinical service. CONCLUSIONS: Primary care service providers from one locale advocate better, multidisciplinary treatment provision for chronic pain and insomnia. Findings suggest that situating this in primary care could be a feasible option, but this requires systemic support and specialist input as well as definitive trials for success.


Assuntos
Dor Crônica , Enfermeiras e Enfermeiros , Distúrbios do Início e da Manutenção do Sono , Dor Crônica/terapia , Humanos , Manejo da Dor , Atenção Primária à Saúde , Distúrbios do Início e da Manutenção do Sono/terapia
2.
BMJ Open ; 6(8): e011495, 2016 08 05.
Artigo em Inglês | MEDLINE | ID: mdl-27496234

RESUMO

OBJECTIVES: To design and test the delivery of an intervention targeting the non-motor symptoms of dystonia and pilot key health and well-being questionnaires in this population. DESIGN: A proof-of-concept study to test the delivery, acceptability, relevance, structure and content for a 3-day group residential programme for the management of dystonia. SETTING: Participants were recruited from a single botulinum toxin clinic. The intervention was delivered in the community. PARTICIPANTS: 14 participants consented to take part (2 withdrew prior to the starting of intervention). The average age was 60 years (range 44-77), 8 of whom were female. After drop-out, 9 participants completed the 3-day programme. INTERVENTION: A 3-day group residential programme. PRIMARY AND SECONDARY OUTCOME MEASURES: Process evaluation and interviews were carried out before and after the intervention to explore participant's views and expectations, as well as experiences of the intervention. Select questionnaires were completed at baseline, 1-month and 3-month follow-up. RESULTS: Although participants were not sure what to expect from the programme, they found it informative and for many this together with being in a group with other people with dystonia legitimised their condition. Mindfulness was accepted and adopted as a coping strategy. This was reflected in the 1-month follow-up. CONCLUSIONS: We successfully delivered a 3-day residential programme to help those living with dystonia manage their condition. Further improvements are suggested. The quantitative outcome measures were acceptable to this group of patients with dystonia.


Assuntos
Adaptação Psicológica , Terapia Cognitivo-Comportamental , Distonia/psicologia , Distonia/terapia , Atenção Plena , Adulto , Idoso , Feminino , Humanos , Entrevistas como Assunto , Masculino , Pessoa de Meia-Idade , Estudo de Prova de Conceito , Escalas de Graduação Psiquiátrica , Pesquisa Qualitativa , Qualidade de Vida , Tratamento Domiciliar , Inquéritos e Questionários , Reino Unido
3.
BMC Neurol ; 16: 40, 2016 Mar 22.
Artigo em Inglês | MEDLINE | ID: mdl-27000094

RESUMO

BACKGROUND: Primary dystonia is a chronic neurological movement disorder that causes abnormal muscle movements. Pain and emotional distress may accompany these physical symptoms. Behavioural interventions are used to help people with long term conditions improve their quality of life. Little is known about behavioural interventions applied to Dystonia. We report a systematic review of studies reporting current evidence of behavioural interventions for people with primary dystonia. METHODS: We did systematic searches of Medline, PsycINFO, AHMED and CINAHL. We assessed the methodological quality of included studies using a risk of bias tool. Any disagreements were resolved by liaising with an independent rater. Physiological outcomes such as dystonia severity and psychological outcomes such as sleep and depression were selected on the basis that primary dystonia causes motor and non-motor symptoms. No time limit was placed on the searches. A narrative synthesis of the results is presented. RESULTS: Of 1798 titles and abstracts screened, 14 full articles were retrieved and inclusion and exclusion criteria applied. Of these a final nine were eligible for the review (N = 73). Only two were Randomised Controlled Trials (RCTs). Using the Movement Disorders Society (MDS) dystonia classification, that was published after this work started, all of the included studies were of idiopathic adult onset focal dystonia without associated features. These included: blepharospasm (eye dystonia) (N = 1), cervical dystonia (neck dystonia) (N = 2), writer's cramp (hand dystonia) (N = 3) and the yips (N = 3). No studies reported on dystonia that affects two or more body regions. Studies reported good adherence and response rates to treatment. Physiological and psychological improvements were noted in all studies at weekly, monthly and yearly follow-ups. Caution should be taken when interpreting the results because of the scarcity of RCTs identified, use of small sample sizes, and inappropriate statistical methods. CONCLUSION: We identified few studies; mainly of poor methodological quality that all studied a focal dystonia. It is not possible to draw firm conclusions. Nevertheless, the data suggests that a combined behavioural therapy approach including relaxation practice for people with idiopathic adult onset focal dystonia merits further investigation.


Assuntos
Terapia Comportamental/métodos , Distúrbios Distônicos/terapia , Qualidade de Vida , Adulto , Depressão/terapia , Humanos
4.
Health Technol Assess ; 17(18): 1-281, 2013 May.
Artigo em Inglês | MEDLINE | ID: mdl-23632142

RESUMO

BACKGROUND: Many older people living in care homes (long term residential care or nursing homes) are depressed. Exercise is a promising non-drug intervention for preventing and treating depression in this population. OBJECTIVE: To evaluate the impact of a 'whole-home' intervention, consisting of training for residential and nursing home staff backed up with a twice-weekly, physiotherapist-led exercise class on depressive symptoms in care home residents. DESIGN: A cluster randomised controlled trial with a cost-effectiveness analysis to compare (1) the prevalence of depression in intervention homes with that in control homes in all residents contributing data 12 months after homes were randomised (cross-sectional analysis); (2) the number of depressive symptoms at 6 months between intervention and control homes in residents who were depressed at pre-randomisation baseline assessment (depressed cohort comparison); and (3) the number of depressive symptoms at 12 months between intervention and control homes in all residents who were present at pre-randomisation baseline assessment (cohort comparison). SETTING: Seventy-eight care homes in Coventry and Warwickshire and north-east London. PARTICIPANTS: Care home residents aged ≥ 65 years. INTERVENTIONS: Control intervention: Depression awareness training programme for care home staff. Active intervention: A 'whole-home' exercise intervention, consisting of training for care home staff backed up with a twice-weekly, physiotherapist-led exercise group. MAIN OUTCOME MEASURES: Geriatric Depression Scale-15, proxy European Quality of Life-5 Dimensions (EQ-5D), cost-effectiveness from an National Health Service perspective, peripheral fractures and death. RESULTS: We recruited a total of 1054 participants. Cross-sectional analysis: We obtained 595 Geriatric Depression Scale-15 scores and 724 proxy EQ-5D scores. For the cohort analyses we obtained 765 baseline Geriatric Depression Scale-15 scores and 776 proxy EQ-5D scores. Of the 781 who we assessed prior to randomisation, 765 provided a Geriatric Depression Scale-15 score. Of these 374 (49%) were depressed and constitute our depressed cohort. Resource-use and quality-adjusted life-year data, based on proxy EQ-5D, were available for 798 residents recruited prior to randomisation. We delivered 3191 group exercise sessions with 31,705 person attendances and an average group size of 10 (5.3 study participants and 4.6 non-study participants). On average, our participants attended around half of the possible sessions. No serious adverse events occurred during the group exercise sessions. In the cross-sectional analysis the odds for being depressed were 0.76 [95% confidence interval (CI) 0.53 to 1.09] lower in the intervention group at 12 months. The point estimates for benefit for both the cohort analysis (0.13, 95% CI -0.33 to 0.60) and depressed cohort (0.22, 95% CI -0.52 to 0.95) favoured the control intervention. There was no evidence of differences in fracture rates or mortality (odds ratio 1.07, 95% CI 0.79 to 1.48) between the two groups. There was no evidence of differences in the other outcomes between the two groups. Economic analysis: The additional National Health Service cost of the OPERA intervention was £374 per participant (95% CI -£655 to £1404); the mean difference in quality-adjusted life-year was -0.0014 (95% CI -0.0728 to 0.0699). The active intervention was thus dominated by the control intervention, which was more effective and less costly. CONCLUSION: The results do not support the use of a whole-home physical activity and moderate-intensity exercise programme to reduce depression in care home residents. TRIAL REGISTRATION: Current Controlled Trials ISRCTN43769277. FUNDING: This project was funded by the National Institute for Health Research Health Technology Assessment programme and will be published in full in Health Technology Assessment; Vol. 17, No. 18. See the Health Technology Assessment programme website for further project information.


Assuntos
Depressão/terapia , Terapia por Exercício/economia , Terapia por Exercício/métodos , Instituição de Longa Permanência para Idosos/estatística & dados numéricos , Casas de Saúde/estatística & dados numéricos , Atividades Cotidianas , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Cognição , Análise Custo-Benefício , Estudos Transversais , Feminino , Fraturas Ósseas/epidemiologia , Avaliação Geriátrica/métodos , Humanos , Relações Interpessoais , Masculino , Limitação da Mobilidade , Mortalidade , Dor/epidemiologia , Medicamentos sob Prescrição , Qualidade de Vida , Fatores Sexuais
5.
Musculoskeletal Care ; 7(1): 17-30, 2009 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-18688791

RESUMO

OBJECTIVES: To develop, pilot, refine and reassess an education day presented by a rheumatology multidisciplinary team (MDT) for recently diagnosed (less than six months) rheumatoid arthritis (RA) patients and their partners/carers. METHODS: A patient education day was developed drawing on an assessment of local patient educational needs and preferences and input from a rheumatology MDT. Feedback from the first education day (2004) (Day 1; 12 patients; age range 19-63 years (median 46); 10 of whom were accompanied by a partner) informed the development of a second education day (2005) (Day 2; 19 patients; age range 36-75 years (median 57.5); 13 of whom were accompanied by a partner). Participants completed evaluation forms on both days and at follow-up between six and seven weeks later, rating each session on a 5-point scale on dimensions of 'informative', 'useful', 'interesting' and 'enjoyable'. A global rating of the day's 'usefulness' was completed at the end of each day on a 10-point scale. Participants were asked to write comments on each session and on aspects of the entire day. RA knowledge, and general and RA-specific self-efficacy were also measured on day 2 (and at follow-up) using the 12-item Patient Knowledge Questionnaire, the 10-item generalized self-efficacy scale and a four-item RA-specific self-efficacy scale. Both qualitative and quantitative methodologies were used in the analysis. RESULTS: Ratings for individual sessions were all high, with no session being rated below 4 out of 5 (1 = 'totally disagree' to 5 = 'totally agree') on both days. The majority of patients (84%) and their partners (57%) responded to the follow-up. Many had used the information package distributed on the day. Some patients and their partners reported positive changes in RA management. Although patient knowledge did not increase significantly (medians 11 at both time points, p = 0.054) (Day 2), RA self-efficacy improved (baseline 11 and 14, respectively), suggesting that patients were more confident in managing their condition (p = 0.010). CONCLUSIONS: The development of this 'local' education and information intervention was carried out in line with Medical Research Council guidelines, and the lessons learned from Day 1 informed further development for Day 2. A one-day format for education of early RA involving the rheumatology MDT was rated highly by participants and warrants further examination. Although this study was a small 'local' intervention, its strengths are that it informs the possibility of wider developments of this kind using a MDT.


Assuntos
Artrite Reumatoide/psicologia , Artrite Reumatoide/terapia , Educação de Pacientes como Assunto/métodos , Reumatologia , Cônjuges/psicologia , Adulto , Idoso , Artrite Reumatoide/diagnóstico , Diagnóstico Precoce , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Avaliação das Necessidades , Equipe de Assistência ao Paciente , Educação de Pacientes como Assunto/organização & administração , Projetos Piloto , Avaliação de Programas e Projetos de Saúde
6.
Haemophilia ; 13(3): 264-70, 2007 May.
Artigo em Inglês | MEDLINE | ID: mdl-17498075

RESUMO

The aim of the study was to conduct a survey of information and self-management needs among members of the UK Haemophilia Society (HS). Of 1082 members mailed, 307 took part in the survey, the mean age was 52.4 years (SD 14.8), 85% were male, 96% white and 66% were living with haemophilia A. 90% felt that there is a lack of understanding amongst the public regarding bleeding disorders, 76% felt that health professionals understood their health and information needs and 32% had experienced problems managing anxiety and or depression. Results suggest that there was a 'stigma' attached to having a bleeding disorder and almost half are very careful about informing others that they have a bleeding disorder. Self-efficacy was relatively high within the sample. Many respondents wanted to be kept informed about current research and the opportunity to participate in research. Women experienced a greater need for more information than men, particularly in the area of the 'medical management' and 'emotional' topics. Men appeared to need more information and or training on 'physical' aspects such as physiotherapy and joint replacement. The study provides an insight into the educational and self-management needs of those affected by bleeding disorders and highlights the importance of providing accessible information.


Assuntos
Transtornos da Coagulação Sanguínea/psicologia , Educação em Saúde , Hemofilia A/psicologia , Educação de Pacientes como Assunto , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Pesquisas sobre Atenção à Saúde , Humanos , Masculino , Pessoa de Meia-Idade , Inquéritos e Questionários , Reino Unido
7.
Child Care Health Dev ; 32(1): 19-31, 2006 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-16398788

RESUMO

BACKGROUND: Chronic disease of childhood may have implications for the psychosocial well-being of children and their families. The purpose of this paper is to provide an overview of the current literature regarding the psychosocial well-being of children with chronic disease, their parents and siblings. METHODS: Electronic searches were conducted using AMED, CINAHL, Cochrane Database, DARE, HTA, MEDLINE, NHS EED, PsycLIT, PsycINFO and PubMED (1990 to week 24, 2004). Inclusion criteria were systematic reviews, meta-analyses and overviews based on traditional reviews of published literature. The titles of papers were reviewed, abstracts were obtained and reviewed, and full copies of selected papers were obtained. RESULTS: Six reviews of the psychosocial well-being of children were identified: three on chronic disease in general, one on asthma, one on juvenile idiopathic arthritis and one on sickle cell disease. Two reviews of psychosocial well-being among parents and two reviews of sibling psychosocial well-being were identified. Evidence from meta-analyses shows that children were at slightly elevated risk of psychosocial distress, although only a minority experience clinical symptomatology. The proportion that experience distress remains to be clarified, as do contributory risk factors. Few conclusions can be drawn from the two reviews of parents. However, a meta-analysis of siblings showed that they are at risk from a number of negative effects. CONCLUSION: This overview has highlighted the need to extend the evidence base for psychosocial well-being of children, parents and siblings.


Assuntos
Doença Crônica/psicologia , Saúde da Família , Adaptação Psicológica , Criança , Doença Crônica/reabilitação , Medicina Baseada em Evidências , Humanos , Transtornos Mentais/etiologia , Metanálise como Assunto , Pais/psicologia , Literatura de Revisão como Assunto , Irmãos/psicologia
8.
Acta Psychiatr Scand ; 111(4): 272-85, 2005 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-15740463

RESUMO

OBJECTIVE: To review current evidence for the clinical and cost-effectiveness of self-management interventions for panic disorder, phobias and obsessive-compulsive disorder (OCD). METHOD: Papers were identified through computerized searches of databases for the years between 1995 and 2003, manual searches and personal contacts. Only randomized-controlled trials were reviewed. RESULTS: Ten studies were identified (one OCD, five panic disorder, four phobias). Effective self-management interventions included cognitive-behavioural therapy (CBT) and exposure to the trigger stimuli for phobias and panic disorders. All involved homework. There was evidence of effectiveness in terms of improved symptoms and psychological wellbeing when compared with standard care, waiting list or relaxation. Brief interventions and computer-based interventions were effective for most participants. In terms of quality, studies were mainly based on small samples, lacked long-term follow-up, and failed to address cost-effectiveness. CONCLUSION: Despite the limitations of reviewed studies, there appears to be sufficient evidence to warrant greater exploration of self-management in these disorders.


Assuntos
Terapia Cognitivo-Comportamental , Dessensibilização Psicológica , Transtorno de Pânico/terapia , Transtornos Fóbicos/terapia , Autocuidado/psicologia , Terapia Cognitivo-Comportamental/economia , Análise Custo-Benefício/economia , Dessensibilização Psicológica/economia , Seguimentos , Humanos , Transtorno de Pânico/economia , Transtorno de Pânico/psicologia , Transtornos Fóbicos/economia , Transtornos Fóbicos/psicologia , Ensaios Clínicos Controlados Aleatórios como Assunto , Autocuidado/economia , Autocuidado/métodos , Resultado do Tratamento
9.
Child Care Health Dev ; 30(6): 637-45, 2004 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-15527474

RESUMO

BACKGROUND: The role of psycho-educational interventions in facilitating adaptation to chronic disease has received growing recognition and is in keeping with policy developments advocating greater involvement of patients in their own care. The purpose of this paper is to provide an overview of the current literature regarding the effectiveness of psycho-educational interventions for children and adolescents with chronic disease, their parents and siblings. METHODS: Electronic searches were conducted using AMED, CINAHL, Cochrane Database, DARE, HTA, MEDLINE, NHS EED, PsycLIT, PsycINFO, and PubMED. Inclusion criteria were systematic reviews, meta-analyses and overviews based on traditional reviews of published literature. The titles of papers were reviewed, abstracts were obtained and reviewed, and full copies of selected papers were obtained. RESULTS: No reviews of psycho-educational interventions were found for either parents or siblings. Twelve reviews of interventions for children and adolescents were identified: chronic disease in general (three); chronic pain (one); asthma (three); chronic fatigue syndrome (CFS)/myalgic encephalomyelitis (ME) (one); diabetes (two); juvenile idiopathic arthritis (JIA) (one) and one informational intervention for paediatric cancer patients. The main focus was on disease management (particularly in asthma and diabetes) with less attention being paid to psychosocial aspects of life with a chronic condition. Overall, there is evidence of effectiveness for interventions incorporating cognitive-behavioural techniques on variables such as self-efficacy, self-management of disease, family functioning, psychosocial well-being, reduced isolation, social competence, knowledge, hope, pain (for chronic headache), lung function (asthma), days absent from school (asthma), visits to A & E (asthma), fatigue (CFS), and metabolic control (diabetes). A number of gaps and limitations were identified across all disease categories, such as inadequate description of interventions, small sample sizes, and lack of evidence regarding cost-effectiveness. CONCLUSION: This overview has highlighted the need to extend the evidence base for psycho-educational interventions, particularly in a UK context. It is essential that effective interventions are implemented and embedded in service provision in order to maximize empowerment through self-care for children, adolescents and their parents.


Assuntos
Adaptação Psicológica , Crianças com Deficiência/psicologia , Educação de Pacientes como Assunto , Adolescente , Adulto , Criança , Doença Crônica , Medicina Baseada em Evidências/métodos , Humanos , Pais , Irmãos , Reino Unido
10.
Int J Psychophysiol ; 41(1): 93-100, 2001 May.
Artigo em Inglês | MEDLINE | ID: mdl-11239701

RESUMO

Twenty-five undergraduates and university staff (15 females, 10 males) volunteered to take part in a study examining the effects of a short-term mental stressor on the activation of neutrophils in peripheral blood, as determined by the oxidative capacity to reduced Nitro-blue Tetrazolium (NBT). Participants were assigned to one of two groups, an experimental group (n=17) and a control group (n=8). Subjects in the experimental group were subjected to a time-constrained mental stressor and finger-stick blood samples were taken on four occasions. Those in the control group did not complete a stressor task and only experienced the four finger-stick blood samples. Heart rate was recorded at 5-min intervals as a general indicator of arousal. Examination of the stained blood samples showed that a short-term stressor resulted in significant increased activation of neutrophils, which returned almost to baseline levels on completion of the experiment. In contrast, the control group's neutrophils showed no significant change in activation throughout. The results support the hypothesis that short-term, acute stressors may activate neutrophils.


Assuntos
Ativação de Neutrófilo/fisiologia , Adulto , Feminino , Frequência Cardíaca/fisiologia , Humanos , Indicadores e Reagentes , Masculino , Pessoa de Meia-Idade , Nitroazul de Tetrazólio , Estresse Psicológico
11.
Am Rev Respir Dis ; 133(6): 1076-80, 1986 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-3717760

RESUMO

The bioavailability of isoniazid, rifampin, and pyrazinamide in 2 combined formulations of the 3 drugs (Rifater) for use primarily in the short-course chemotherapy of tuberculosis has been studied in Chinese patients in Singapore and Hong Kong. One formulation, containing 50 mg isoniazid, 120 mg rifampin, and 300 mg pyrazinamide per tablet is suitable for daily use, whereas the other, containing higher proportions of isoniazid and pyrazinamide, is designed for intermittent treatment, each tablet containing 125 mg isoniazid, 100 mg rifampin, and 375 mg pyrazinamide. Appropriate dosages for the Chinese patients, whose average weight was approximately 50 kg, were 5 and 6 tablets, respectively. Plasma concentrations of the 3 drugs after giving such dosages of the 2 combined formulations were compared in 16 patients, 8 in Singapore and 8 in Hong Kong, by means of a crossover study, with the concentrations obtained when identical doses of the 3 drugs were given using standard separate drug formulations. The concomitant urinary excretions of the drugs and their major metabolites were also estimated. Very similar results were obtained whether the drugs were given as the combined preparations or in their standard separate formulations, demonstrating the excellent bioavailability of all 3 drugs in each of the 2 combined formulations.


Assuntos
Isoniazida/metabolismo , Pirazinamida/metabolismo , Rifampina/metabolismo , Tuberculose/tratamento farmacológico , Acetilação , Adolescente , Adulto , Disponibilidade Biológica , Combinação de Medicamentos , Humanos , Isoniazida/sangue , Isoniazida/uso terapêutico , Isoniazida/urina , Pessoa de Meia-Idade , Concentração Osmolar , Fenótipo , Pirazinamida/sangue , Pirazinamida/uso terapêutico , Pirazinamida/urina , Rifampina/sangue , Rifampina/uso terapêutico , Rifampina/urina , Fatores de Tempo , Tuberculose/sangue
12.
J Epidemiol Community Health ; 40(2): 110-6, 1986 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-3746171

RESUMO

In 1971-3 data on smoking habits, cigarette brand smoked, morning phlegm production, and lung function were recorded for factory workers as part of the Heart Disease Prevention Project. These men were reassessed in 1984 and those who had always smoked cigarettes from the same tar group were compared with those who had dropped one tar group (mean decreases of 6.6 mg tar, 0.1 mg nicotine) and two tar groups (mean decreases of 11.9 mg tar, 0.5 mg nicotine). Over the 13 years, men who had dropped one tar group were significantly more likely (p less than 0.05) to stop producing phlegm, but the effect was less marked for those who had dropped two tar groups. The mean fall in FEV1 was similar in all three groups, but 95% confidence limits showed that although dropping one tar group could be associated with at most a saving of 84 ml over the follow up period, there could be little extra benefit from dropping two tar groups. In 1984, all three groups of smokers excreted similar amounts of nicotine metabolites in the urine, suggesting that men who had dropped two tar groups compensated for the reduced nicotine yield of their cigarettes. This could account for the lack of a dose response relationship between reduction in the tar yield of cigarettes and cessation of phlegm and fall in FEV1.


Assuntos
Pulmão/fisiologia , Muco/fisiologia , Nicotiana/análise , Plantas Tóxicas , Fumar , Alcatrões , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Modelos Biológicos , Muco/análise , Nicotina/análise , Alcatrões/análise , Reino Unido
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