G Nuzzaci, G Giuliano, M Boccuni, V Cupelli, C Arcangeli
{"title":"[Hemodynamic research and physiopathologic remarks on \"vibration angiopathy\" with Raynaud's phenomenon (author's transl)].","authors":"G Nuzzaci, G Giuliano, M Boccuni, V Cupelli, C Arcangeli","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A hemodynamic research was carried out by the authors in ten patients affected with upper limb \"vibration angiopathy\", as well as in ten healthy control subjects. Digital artery flow and systolic, diastolic and mean pressures were measured, and vascular resistances and the so-called \"systolic index\" calculated, both in basal condition and following hand warming. In patients with \"vibration angiopathy\" fingers were examined, which on a previous arteriographic study showed the most and the least severe arterial lesions, respectively. No statistically significant differences were detected between the mean values of the hemodynamic indices obtained from the most and the least involved fingers, respectively, as well as between such values and the control subject ones. These results would suggest--even with due reservation on account of the relatively small number of cases and of their different features--that digital artery lesions, as shown by arteriography, have no definite hemodynamic significance. The lack of a statistically significant decrease of the digital artery mean pressure, compared to control subjects, supports the hypothesis that Raynaud's phenomenon in \"vibration angiopathy\" is not due to a transmural pressure fall. Finally, the lack of correlation between the severity of arterial lesions and Raynaud's phenomenon site suggests that the vasomotion impairment which causes the phenomenon is not related to such lesions.</p>","PeriodicalId":76102,"journal":{"name":"Lavoro umano","volume":"28 6","pages":"161-73"},"PeriodicalIF":0.0,"publicationDate":"1976-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12211659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
F Asioli, A Dell'anna, A Ferro, F Pappalardo, R Poletti
{"title":"[Remarks on the nervous disturbances observed during an occupational medicine survey in workmen employed in a metal container manufacturing plant (author's transl)].","authors":"F Asioli, A Dell'anna, A Ferro, F Pappalardo, R Poletti","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The authors report the results of a survey carried out in order to investigate psychic disturbances in subjects working in a metal container manufacturing industry. The manufacturing process is described and an attempt made to analyse the relationships among its evolution, work organisation--mainly referring to working group composition--and work division levels reached. The possible influences of noxious environmental factors on the onset of the psychic disturbances observed are examined. The obtained data are analysed and the psychic disturbances classified as: 1) anxious, 2) depressive, and 3) psychosomatic in nature; hypotheses are formulated in order to explain the higher frequency of almost all reported disturbances in female compared to male workers. Data are reported concerning psychotropic drug treatment as well as psychiatric hospitalization in the examined subjects; and their higher prevalence in comparison with the mean general population data is underlined. Finally, some remarks are made on methodology problems, and a correct setting up of the technician/homogeneous working group relationship is said to be the fundamental support for a profitable survey such as the one performed by the authors.</p>","PeriodicalId":76102,"journal":{"name":"Lavoro umano","volume":"28 6","pages":"174-84"},"PeriodicalIF":0.0,"publicationDate":"1976-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12211660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"[Assessment of working capacity in a group of subjects affected with obstructive respiratory disease (author's transl)].","authors":"M Rossi, R Fameli, G Mastrangelo, A Reggiani","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Ventilatory function was studied by the authors in 43 subjects affected with obstructive respiratory disease. The research was performed both at rest and during two exercise tests -- 60 and 100 watts, respectively. The subjects were divided into three groups on the basis of tidal volume (at 30 1 ventilation) / vital capacity ratio. It was found that during muscular effort subjects with major impairment of spirometric indexes hypoventilated, whereas the opposite occurred in patients with lesser impairment. Moreover, subjects hyperventilating during muscular work were found to have brandypnea, whereas the opposite occurred in hyperventilating patients. It is suggested that progressing and worsening of obstructive emphysema lead to a relative hypoventilation during muscular work, which is due to an \"inability\" to increase the frequency of breathing.</p>","PeriodicalId":76102,"journal":{"name":"Lavoro umano","volume":"28 5","pages":"142-53"},"PeriodicalIF":0.0,"publicationDate":"1976-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12204644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R Caudarella, P Gennari, G Tabaroni, D Cascella, G B Raffi
{"title":"[Respiratory disease in foundry workers. An epidemiologic survey in three foundries (author's transl)].","authors":"R Caudarella, P Gennari, G Tabaroni, D Cascella, G B Raffi","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The authors report the results of a survey performed in three cast iron foundries, with particular emphasis on the impairment of respiratory system in the involved workers. The results obtained showed a high prevalence of pneumoconiosis, which, as for roentgenologic and clinical features, appears to be different from usual silicotic pneumoconiosis. The highest prevalence of chronic bronchitis -- either associated or not with pneumoconiosis -- in the foundry workers examined is stressed, as well as the prevalence of squamous metaplasia of the bronchial epithelium. An important role in this aspect is supposed to be played not only by dusts, but even by tobacco smoke in favouring the onset of the above mentioned alterations is also confirmed.</p>","PeriodicalId":76102,"journal":{"name":"Lavoro umano","volume":"28 5","pages":"129-41"},"PeriodicalIF":0.0,"publicationDate":"1976-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12204643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"[Remarks on the use of shortened procedures in evaluating EDTA-induced urinary lead excretion].","authors":"P Chiesura, S Macaluso","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Urinary lead excretion following EDTA administration was studied in 47 both normal and lead intoxicated subjects, mainly monitoring the rate of excretion through sequential urine samples. Urinary lead excretion patterns proved to be quite different in the examined subjects: in particular, great differences were noted in the onset of lead excretion increase. The six-hr lead excretion resulted to be 60,7% of the total 24-hr excretion, with, however, a very wide range (42% to 83%). Urine flow didn't appear to influence the rhythm of urinary lead excretion. There is sufficient evidence to justify the conclusion that evaluation of EDTA-induced urinary lead excretion on the basis of the first-six-hr results cannot be assumed as a reliable procedure, unless it is used for rough diagnostic screening purposes.</p>","PeriodicalId":76102,"journal":{"name":"Lavoro umano","volume":"28 4","pages":"97-103"},"PeriodicalIF":0.0,"publicationDate":"1976-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12014559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"[Lead poisoning hazard in pewter manufacturing industry and in art bronze foundries (author's transl)].","authors":"F Carnevale, F D'andrea, D Grazioli","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Two manufacturing processes are reported by the authors, which proved to be sources of lead poisoning hazard, due to the presently employed row materials. The results of a survey performed in 50 pewter manufacturing workers, as well as in 16 workmen involved in artistic bronze melting, are also reported. The inspection of the manufacturing processes made it possible to find out the poison sources in both the above mentioned types of industry.</p>","PeriodicalId":76102,"journal":{"name":"Lavoro umano","volume":"28 4","pages":"104-10"},"PeriodicalIF":0.0,"publicationDate":"1976-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12201140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"[Considerations and remarks on new list of occupational diseases in industry and agriculture].","authors":"N Gennai, G Giuliano","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":76102,"journal":{"name":"Lavoro umano","volume":"28 4","pages":"111-8"},"PeriodicalIF":0.0,"publicationDate":"1976-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12201141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"[Environmental lead pollution. An epidemiologic study in road gasoline station workers (author's transl)].","authors":"R Rotunno, M Tarantino, D Bonsignore","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Erythrocyte ALA-D and urinary coproporphyrins were investigated in 29 road gasoline station workers in order to detect a possible abnormal lead absorption. The ALA-D test represents the most sensitive laboratory device to detect both abnormal lead absorption and possible initial lesions due to lead poisoning. Using the above mentioned laboratory tests evidence of abnormal lead absorption was found in five of the examined subjects. Some remarks on prevention of possible lead intoxication are done.</p>","PeriodicalId":76102,"journal":{"name":"Lavoro umano","volume":"28 3","pages":"65-72"},"PeriodicalIF":0.0,"publicationDate":"1976-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12192724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"[Lead detection and measurement in biological fluids by means of anodic stripping voltammetry (author's transl)].","authors":"R Gagliano-Candela, S Napoli, T Gagliardi","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The authors deal with the anodic stripping voltammetry method for detecting and measuring lead in biological fluids. A comparison was made with the more widely used dithizone method. The mercury-graphite electrode was also checked in respect of both the plating time and the amount of analyses performed. From the results obtained the authors conclude that the anodic stripping voltammetry technique appears to be simpler and more rapid and sensitive than the dithizone method for lead detection and measurement in biological fluids. The former is therefore particularly suitable for laboratories where routine repetitive analyses are performed.</p>","PeriodicalId":76102,"journal":{"name":"Lavoro umano","volume":"28 3","pages":"82-8"},"PeriodicalIF":0.0,"publicationDate":"1976-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12192726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"[A study of arterial pressure, pulse rate and capnogram during exhaustive muscular work performed by healthy subjects while breathing air or 100% oxygen (author's transl)].","authors":"U Quatrini, A Benigno, V Randazzo","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Eight untrained healthy young men were submitted to exhaustive physical exercise, performed on a bicycle ergometer while breathing either air or 100% oxygen, Arterial pressures, pulse rate and, in some instances, capnogram too were recorded during exercise and at the end of it. In the majority of subjects, 100% oxygen breathing was found to improve in some way work performance, in comparison with air breathing. However, the differences in the parameters examined appeared to be subjective and inconstant and to change according to work load levels.</p>","PeriodicalId":76102,"journal":{"name":"Lavoro umano","volume":"28 3","pages":"73-81"},"PeriodicalIF":0.0,"publicationDate":"1976-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12192725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}