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Life support systems : the journal of the European Society for Artificial Organs最新文献

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A simple breath pattern simulator. 一个简单的呼吸模式模拟器。
Life support systems : the journal of the European Society for Artificial Organs Pub Date : 1986-04-01
D Gui, R M Tacchino, T Emanuele
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引用次数: 0
In vitro pulsatile flow measurements in the vicinity of mechanical heart valves in the mitral flow chamber. 二尖瓣血流室机械心脏瓣膜附近的体外脉动流量测量。
Life support systems : the journal of the European Society for Artificial Organs Pub Date : 1986-04-01
Y R Woo, A P Yoganathan
{"title":"In vitro pulsatile flow measurements in the vicinity of mechanical heart valves in the mitral flow chamber.","authors":"Y R Woo,&nbsp;A P Yoganathan","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A three-beam laser Doppler anemometer system was used to study the flow fields created by various types of mitral heart valve prostheses under conditions of physiological pulsatile flow. The prosthetic valves studied were the Beall caged-disc valve, Björk-Shiley tilting disc valve, Medtronic-Hall tilting disc valve, and St. Jude bileaflet valve. The results indicate that all four prosthetic valve designs studied create very disturbed flow fields, with elevated turbulent shear stresses and regions of flow separation and/or stagnation. The maximum turbulent shear stresses measured were 1900 dynes/cm2 for the Beall valve, 380 dynes/cm2 for the Björk-Shiley valve, 1800 dynes/cm2 for the Medtronic-Hall valve, and 770 dynes/cm2 for the St. Jude valve. These elevated turbulent shear stresses could cause sublethal and/or lethal damage to red cells and platelets. The regions of flow separation and/or stagnation could lead to thrombus formation and/or tissue overgrowth on the valve structure, as observed on clinically recovered prosthetic valves.</p>","PeriodicalId":77869,"journal":{"name":"Life support systems : the journal of the European Society for Artificial Organs","volume":"4 2","pages":"115-39"},"PeriodicalIF":0.0,"publicationDate":"1986-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14078533","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}
引用次数: 0
Prognostic variables in late follow-up of aortic valve replacement using the proportional hazard model: a study on patients using the Medtronic-Hall cardiac prosthesis. 使用比例风险模型的主动脉瓣置换术后期随访预后变量:对使用美敦力-霍尔心脏假体患者的研究
Life support systems : the journal of the European Society for Artificial Organs Pub Date : 1986-04-01
M Abdelnoor, S N Hauge, K V Hall
{"title":"Prognostic variables in late follow-up of aortic valve replacement using the proportional hazard model: a study on patients using the Medtronic-Hall cardiac prosthesis.","authors":"M Abdelnoor,&nbsp;S N Hauge,&nbsp;K V Hall","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>An alternative approach to the study of the follow-up of patients with heart prostheses is the use of the reliability theory (hazard function) and proportional hazard model (Cox's model). In a population of 480 patients who underwent AVR in the period from June 1977 to January 1983, with a mean follow-up time of 2.8 years, 16 preoperative variables were considered. From this pool of variables, six entered the regression model in a time-independent mode. These were age at operation, sex, preoperative NYHA classification, presence of AI, presence of endocarditis and presence of atrial fibrillation on ECG, none of which entered the model in the time-related mode. Another multifactorial approach, using a stepwise regression analysis to examine primary predictive factors that independently correlate with survival, while simultaneously accounting for the other previous variables, showed that the variables with additive prognostic value were age at operation, presence of AI and presence of endocarditis. Based on this model, a forecast five-year survival rate ranging from 88 to 14 per cent was found at the end of the fifth year. For the most favourable and the worst combinations of these prognostic variables, a patient-specific forecast five-year survival rate was drawn up. Our results were compared, using univariate and multivariate methods, with the results found in the literature, and the implications of this comparison were discussed.</p>","PeriodicalId":77869,"journal":{"name":"Life support systems : the journal of the European Society for Artificial Organs","volume":"4 2","pages":"103-13"},"PeriodicalIF":0.0,"publicationDate":"1986-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14867253","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}
引用次数: 0
The evaluation of electromedical equipment in the United Kingdom; moving towards improved patient care? 英国电子医疗设备的评估;朝着改善病人护理的方向发展?
Life support systems : the journal of the European Society for Artificial Organs Pub Date : 1986-04-01
P J Drury, G A Harston
{"title":"The evaluation of electromedical equipment in the United Kingdom; moving towards improved patient care?","authors":"P J Drury,&nbsp;G A Harston","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":77869,"journal":{"name":"Life support systems : the journal of the European Society for Artificial Organs","volume":"4 2","pages":"99-101"},"PeriodicalIF":0.0,"publicationDate":"1986-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14867258","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}
引用次数: 0
Alterations in host defense mechanisms associated with cardiopulmonary bypass. 与体外循环相关的宿主防御机制改变。
Life support systems : the journal of the European Society for Artificial Organs Pub Date : 1986-01-01
M D Kazatchkine
{"title":"Alterations in host defense mechanisms associated with cardiopulmonary bypass.","authors":"M D Kazatchkine","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":77869,"journal":{"name":"Life support systems : the journal of the European Society for Artificial Organs","volume":"4 Suppl 1 ","pages":"144-52"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14867251","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}
引用次数: 0
Gaseous microemboli production of bubble and membrane oxygenators. 气泡和膜式氧合器产生气态微栓子。
Life support systems : the journal of the European Society for Artificial Organs Pub Date : 1986-01-01
D T Pearson, M P Holden, S J Poslad
{"title":"Gaseous microemboli production of bubble and membrane oxygenators.","authors":"D T Pearson,&nbsp;M P Holden,&nbsp;S J Poslad","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":77869,"journal":{"name":"Life support systems : the journal of the European Society for Artificial Organs","volume":"4 Suppl 1 ","pages":"198-208"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14867257","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}
引用次数: 0
Dynamic model of gas exchanges during cardiopulmonary bypass. 体外循环过程中气体交换的动态模型。
Life support systems : the journal of the European Society for Artificial Organs Pub Date : 1986-01-01
P L Commin, O Stucker, M Duvelleroy
{"title":"Dynamic model of gas exchanges during cardiopulmonary bypass.","authors":"P L Commin,&nbsp;O Stucker,&nbsp;M Duvelleroy","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":77869,"journal":{"name":"Life support systems : the journal of the European Society for Artificial Organs","volume":"4 Suppl 1 ","pages":"23-35"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14224548","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}
引用次数: 0
Physiological aspects of extracorporeal CO2-removal in dogs and sheep with regard to clinical application. 狗和羊体外二氧化碳去除的生理方面与临床应用。
Life support systems : the journal of the European Society for Artificial Organs Pub Date : 1986-01-01
K Mottaghy, B Oedekoven, R Bey, D Schaich-Lester, H Starmans, H Schmid-Schonbein
{"title":"Physiological aspects of extracorporeal CO2-removal in dogs and sheep with regard to clinical application.","authors":"K Mottaghy,&nbsp;B Oedekoven,&nbsp;R Bey,&nbsp;D Schaich-Lester,&nbsp;H Starmans,&nbsp;H Schmid-Schonbein","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":77869,"journal":{"name":"Life support systems : the journal of the European Society for Artificial Organs","volume":"4 Suppl 1 ","pages":"59-71"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14224551","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}
引用次数: 0
Abstracts. XIII annual meeting, European Society for Artificial Organs in conjunction with the Société Française d'Hémaphérèse and Société de Chirurgie Vasculaire, Avignon, France, September 1986. 摘要。1986年9月，法国阿维尼农，欧洲人工器官学会与法国<s:1> <s:1>薪金和薪金薪金薪金协会和法国血管协会联合召开第十叁次年会。
Life support systems : the journal of the European Society for Artificial Organs Pub Date : 1986-01-01
{"title":"Abstracts. XIII annual meeting, European Society for Artificial Organs in conjunction with the Société Française d'Hémaphérèse and Société de Chirurgie Vasculaire, Avignon, France, September 1986.","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":77869,"journal":{"name":"Life support systems : the journal of the European Society for Artificial Organs","volume":" ","pages":"1-126"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14651204","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}
引用次数: 0
Modifications of the hemorrheological parameters with reference to the use of autologous or homologous blood in 25 cases of aorto-coronary by-pass. 25例冠状动脉旁路移植术中自体或异体血液血液流变学参数的改变。
Life support systems : the journal of the European Society for Artificial Organs Pub Date : 1986-01-01
G Martinelli, S Faenza, F Petrini, A Zanoni, G Palareti, M Poggi, R Di Bartolomeo
{"title":"Modifications of the hemorrheological parameters with reference to the use of autologous or homologous blood in 25 cases of aorto-coronary by-pass.","authors":"G Martinelli,&nbsp;S Faenza,&nbsp;F Petrini,&nbsp;A Zanoni,&nbsp;G Palareti,&nbsp;M Poggi,&nbsp;R Di Bartolomeo","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":77869,"journal":{"name":"Life support systems : the journal of the European Society for Artificial Organs","volume":"4 Suppl 1 ","pages":"174-80"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14613116","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}
引用次数: 0
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