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Query: UMLS:C0034067 (emphysema)
 11,506 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

In a random sample of 25,129 Swedish men who responded to a questionnaire on smoking habits in 1963 the cause specific mortality was followed through 1979. In the cohort, 32% smoked cigarettes, 27% a pipe, and 5% cigars. There were clear covariations (p less than 0.001) between the amount of tobacco smoked and the risk of death due to cancer of the oral cavity and larynx, oesophagus, liver, pancreas, lung, and bladder as well as due to bronchitis and emphysema, ischaemic heart disease, aortic aneurysm, and peptic ulcer. Pipe smokers showed similar risk levels to cigarette smokers. There was a close to linear increase in lung cancer risk in relation to the amount of tobacco smoked for cigarette, pipe, and cigar smokers, respectively. An increasing risk of ischaemic heart disease with amount smoked was seen among both cigarette and pipe smokers. A similar fraction of inhalers in Swedish cigarette and pipe smokers may explain the similarity in risks.
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PMID:Mortality in relation to cigarette and pipe smoking: 16 years' observation of 25,000 Swedish men. 365 38

A retrospective cohort study was conducted to examine mortality among 18,811 male farm owners and operators in New York State from 1973-1984. Farm Bureau membership lists were used to identify the study population, and vital status was determined through record linkage with death certificate and motor vehicle files. The comparison group consisted of the 1980 United States Census population of men who resided in the same towns as did the farmers. The results indicated that the study cohort experienced fewer than the expected numbers of deaths overall and for each major cause category except accidents. Specific causes with significant mortality deficits included cancer of the lung (standardized mortality ratio [SMR] = 47.0); diabetes mellitus (SMR = 57.5); ischemic heart disease (SMR = 65.3); bronchitis, emphysema, and asthma (SMR = 26.7); and cirrhosis of the liver (SMR = 29.7). The only specific cause with a significantly elevated mortality was accidents other than motor vehicle (SMR = 146.5). The investigation differs from previous research in method, setting, and population, but the pattern of findings is generally consistent with that of other studies.
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PMID:A retrospective cohort study of mortality among New York State Farm Bureau members. 366 7

A cohort of 3971 white miners in South Africa, born between 1 January 1916 and 31 December 1930 who were alive on 1 January 1970 and currently working in the East Rand-Central Rand-West Rand mining areas, was followed up for nine years, when the 3426 survivors were aged from 48 to 62. Fifteen (0.4%) had been lost to view and 530 had died (13.4% of the 3956 whose vital status was determined). Based on the occupational histories of a 30% sample of the cohort it was known that the vast majority were gold miners. An estimated 93% had worked more than 85% of their mining service in gold mines. Standardised mortality ratios were calculated as the ratios of the deaths observed in the cohort to those expected on the basis of concurrent mortality in the reference population--the total white male population in the Republic of South Africa. There was little sign of a "healthy worker effect"; of several possible reasons, one is that the white miner in South Africa had adopted certain unhealthy life styles, another is that the reference population was otherwise inappropriate. The SMR for all causes of death (117.6) was raised because of excess mortality due to the following causes: lung cancer (161.2), chronic respiratory diseases (165.6), and acute and chronic nephritis (381.0). A case-referent analysis was carried out on those miners in the cohort who had spent at least 85% of their service in gold mines. For lung cancer, smoking was the main contributory factor towards disease. For chronic respiratory diseases bronchitis, emphysema, asthma, pneumoconiosis, and pulmonary heart disease), smoking was also the main risk factor, but there was an association wih cumulative dust exposure. Raised blood pressure, smoking, and adiposity were associated with ischaemic heart disease as was the duration of service underground. Study of comprehensive medical histories in all 530 deaths, including necropsy in most cases, showed that none was directly due to pneumoconiosis or to tuberculosis.
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PMID:Mortality of middle aged white South African gold miners. 377 38

To determine the relative importance of multiple interrelated factors that have been considered to contribute to pulmonary infarction, the authors performed a discriminant analysis on consecutively autopsied patients with pulmonary embolism. From the clinic records of 45 individuals, the authors tabulated the underlying illness, history of valvular or ischemic heart disease, right and left ventricular failure, sepsis, shock, malignancy, premortem functional status, and the clinician's suspicion of pulmonary embolism. At postmortem examination, the authors measured and recorded the extent of emphysema, pneumonia, neoplasia, pulmonary vascular atherosclerosis; thickness and dilatation of both cardiac ventricles; the presence of valvular heart disease; the number, diameter, and amount of occlusion of the pulmonary arteries that contained thromboemboli; the extension of the clot, the size of the infarct; the Reid-Index; and the thickness of pulmonary and bronchial arterial wall. The major determinants of infarction were as follows: poor premortem functional status, the number of lobes having emboli, left ventricular failure, and the presence of lung cancer. The authors then tested the equation generated from these patients on 21 additional patients. The discriminant function correctly classified 81% of first group and predicted the occurrence of infarction in new patients with 70% accuracy. The size of the infarct was most correlated with the use of vasodilators and the embolic burden.
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PMID:Factors associated with pulmonary infarction. A discriminant analysis study. 401 73

The rapid idioventricular rhythm (RIVR) seen most frequently during the acute phase of myocardial infarction is considered to be a benign arrhythmia which has only a moderate haemodynamic effect on the healthy heart. In a patient with chronic bronchitis and emphysema and ischaemic heart disease, haemodynamic studies during an episode of poorly tolerated RIVR showed a 22 per cent decrease in cardiac output secondary to a decrease in stroke volume. The authors emphasise the need for the correction of factors capable of increasing myocardial oxygen debt rather than the use of anti-arrhythmic agents.
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PMID:[Hemodynamic study of a rapid idioventricular rhythm. Apropos of a case]. 611 4

A post-mortem survey of emphysema in coalworkers and non-coalworkers was carried out in men aged 50-70 years dying of ischaemic heart disease (IHD). It was determined that in such men selection for necropsy was similar in coalworkers and non-coalworkers. All lungs were examined in a standard way and the amounts of centrilobular and panacinar emphysema were scored on numerical scales. Emphysema in men dying of IHD was significantly more frequent in coalworkers than in non-coalworkers even after age and smoking habits were accounted for by stratification. In the coalworkers, the severity of emphysema was related to the amount of dust in simple foci in the lungs. Because both groups were selected similarly from their parent populations the relative frequency of emphysema found in this study reflects that in the whole populations of coalworkers and non-coalworkers in the study area and confirms an excess of emphysema in coalworkers. This excess is likely to be due to occupational factors.
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PMID:Post-mortem study of emphysema in coalworkers and non-coalworkers. 612 40

A study was conducted to assess how lung cancer and other mortality trends among California physicians had been influenced by the high proportion who had given up smoking since 1950. Several sample surveys indicated that the proportion of California physicians who currently smoked cigarettes had declined dramatically from about 53% in 1950 to about 10% in 1980. During the same period the proportion of other American men who smoked cigarettes had declined only modestly, from about 53% to 38%. Using the 1950 American Medical Directory a cohort of 10 130 California male physicians was established and followed up for mortality till the end of 1979, during which time 5090 died. The information from follow up and death certification was exceptionally good. The standardised mortality ratio for lung cancer among California male physicians relative to American white men declined from 62 in 1950-9 to 30 in 1970-9. The corresponding decline in standardised mortality ratio was from 100 to 63 for other smoking related cancer, from 106 to 71 for ischaemic heart disease, and from 62 to 35 for bronchitis, emphysema, and asthma. The standardised mortality ratio remained relatively constant for other causes of death not strongly related to smoking. The overall ratio declined in all age groups at a rate of about 1% a year. The total death rate among all physicians converged towards the rate among non-smoking physicians. By the end of the study period physicians had a cancer rate and total death rate similar to or less than those among typical United States non-smokers. This "natural experiment" shows that lung cancer became relatively less common on substantial elimination of the primary causal factor, cigarette smoking. Other smoking related diseases also became relatively less common, though factors other than cigarette smoking may have contributed to this change.
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PMID:Trends in mortality among California physicians after giving up smoking: 1950-79. 640 42

Trapidil (Rocornal) is clinically used as a coronary vasodilator and inhibitor of coagulation of the platelet. Recently trapidil has been reported to have a bronchodilatory action in excised dog's tracheal smooth muscle. In the present study the bronchodilatory effects of trapidil were investigated in man. For 21 patients with asthma, 6 patients with emphysema and 2 patients with chronic bronchitis, 100 mg of trapidil was infused intravenously. Subjects were divided into two groups. Group I was infused for about 30 min and Group II for about 10 min. After administration of trapidil, forced vital capacity increased in both groups (p less than 0.01), forced expiratory volume at 1.0 s (p less than 0.01) and peak expiratory flow rate (p less than 0.05) increased in Group II. Respiratory resistance decreased (p less than 0.01) in Group II. From these results, it was confirmed that trapidil has bronchodilatory effect. We think trapidil is useful for the treatment of the patients not only with ischemic heart disease but with chronic obstructive lung disease.
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PMID:Bronchodilatory effect of trapidil in man. 653 12

Health is defined as homeostasis of the cellular ecology, and a state where there has not been an inordinate loss, reversible or irreversible, of the structural and/or functional reserves of the body. An adverse health effect is defined as the causation, promotion, facilitation and/or exacerbation of a structural and/or functional abnormality, with the implication that the abnormality produced has the potential of lowering the quality of life, contributing to a disabling illness, or leading to a premature death. Experimental animal studies indicate that poor air quality has the potential for serious adverse health effects through perturbations of the cellular ecology over long-term periods. Some of the most important concerns are inordinate depletions of lung reserves (in particular, emphysema), the facilitation of cancer metastasis to the lung, the facilitation of immunologic deficits with the concomitant expression of opportunistic organisms, and amplification of cardiovascular abnormalities (in particular, ischemic heart disease). It is argued that air quality standard setting should more strongly consider adverse health effects that are presently subclinical in nature in order to achieve early prevention instead of late correction.
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PMID:What is an adverse health effect? 665 20

In a study in 29 health centre districts in Japan 91 540 non-smoking wives aged 40 and above were followed up for 14 years (1966-79), and standardised mortality rates for lung cancer were assessed according to the smoking habits of their husbands. Wives of heavy smokers were found to have a higher risk of developing lung cancer and a dose-response relation was observed. The relation between the husband's smoking and the wife's risk of developing lung cancer showed a similar pattern when analysed by age and occupation of the husband. The risk was particularly great in agricultural families when the husbands were aged 40-59 at enrolment. The husbands' smoking habit did not affect their wives' risk of dying from other disease such as stomach cancer, cervical cancer, and ischaemic heart disease. The risk of developing emphysema and asthma seemed to be higher in non-smoking wives of heavy smokers but the effect was not statistically significant. The husband's drinking habit seemed to have no effect on any causes of death in their wives, including lung cancer. These results indicate the possible importance of passive or indirect smoking as one of the causal factors of lung cancer. They also appear to explain the long-standing riddle of why many women develop lung cancer although they themselves are non-smokers. These results also cast doubt on the practice of assessing the relative risk of developing lung cancer in smokers by comparing them with non-smokers.
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PMID:Non-smoking wives of heavy smokers have a higher risk of lung cancer: a study from Japan. 677 40


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