{"title":"Proceedings: The pattern of breathing in some pathological conditions of the cardiorespiratory system.","authors":"J E Cotes, G R Johnson, J W Reed, M J Saunders","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":75638,"journal":{"name":"Bulletin de physio-pathologie respiratoire","volume":"11 2","pages":"115P-116P"},"PeriodicalIF":0.0,"publicationDate":"1975-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12326891","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}
P Romero Colomer, T Garcia Carmona, V Sobradillo, M Gimenez, C Saunier
Maximum oxygen uptake (VO2 max) was measured in 11 chronic bronchitics without heart failure or hypoxemia at rest and during maximal work load, using a triangular type of excerise with increasing power (30 W/3 min). Glycolysis was studied in these patients during rectangular exercises lasting 10 minutes, in which power was increased by steps from an average value of 45 % to 72 and 94 % of VO2 max. The metabolic response of lactate in blood is similar to normal, during the limited performances of these patients.
{"title":"[Glycolytic metabolism during muscular excerise in chronic broncho-pulmonary disease without hypoxemia (author's transl)].","authors":"P Romero Colomer, T Garcia Carmona, V Sobradillo, M Gimenez, C Saunier","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Maximum oxygen uptake (VO2 max) was measured in 11 chronic bronchitics without heart failure or hypoxemia at rest and during maximal work load, using a triangular type of excerise with increasing power (30 W/3 min). Glycolysis was studied in these patients during rectangular exercises lasting 10 minutes, in which power was increased by steps from an average value of 45 % to 72 and 94 % of VO2 max. The metabolic response of lactate in blood is similar to normal, during the limited performances of these patients.</p>","PeriodicalId":75638,"journal":{"name":"Bulletin de physio-pathologie respiratoire","volume":"11 2","pages":"215-30"},"PeriodicalIF":0.0,"publicationDate":"1975-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11452970","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":"[Physiology and physiopathology of ventilation distribution in the alveolar spaces].","authors":"C Hatzfeld","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":75638,"journal":{"name":"Bulletin de physio-pathologie respiratoire","volume":"11 1","pages":"7P-10P"},"PeriodicalIF":0.0,"publicationDate":"1975-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12369297","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":"[Value of closing volume determination in epidemiology].","authors":"F Ruff","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":75638,"journal":{"name":"Bulletin de physio-pathologie respiratoire","volume":"11 1","pages":"11P-15P"},"PeriodicalIF":0.0,"publicationDate":"1975-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12369453","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}
Passive changes in the posture induce haemodynamic disturbances, and especially a decrease of the cardiac output. This in the steady state does not involve any modification of the alveolar gas. There are however transient variations of PAO2 and PACO2, studied in this work at constant states of ventilation and metabolism. The haemodynamic disturbances are produced by a tip-up seat, actuated by a sinusoidal motion to different velocities and a constant amplitude (90 degrees). The frequency response is analyzed according to servosystems theories. The results show that there are causes of non-linearity in PAO2 and PACO2 variations, more complex for PAO2, and that the amplitude of the variations is two to three times greater for PAO2 than for PACO2. The observed transient phenomena are essentially interpreted as resulting from the differences in dynamic behavior between cardiac output on the one hand, variations in the arterio-venous gradient on the other; this effect is more pronounced for PAO2 variations. From a practical point of view, the great amplitude of transient PAO2 variations (as much as 11 mmHg) could, under certain conditions, allow, by the single continuous recording of PO2 to the mouth, to demonstrate and define the time of the arrival of an haemodynamic disturbance in patients with assisted ventilation.
{"title":"[Transient variations of alveolar gas composition during haemodynamic disturbances (author's transl)].","authors":"J Santucci, B Le Bihan, G Barrès","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Passive changes in the posture induce haemodynamic disturbances, and especially a decrease of the cardiac output. This in the steady state does not involve any modification of the alveolar gas. There are however transient variations of PAO2 and PACO2, studied in this work at constant states of ventilation and metabolism. The haemodynamic disturbances are produced by a tip-up seat, actuated by a sinusoidal motion to different velocities and a constant amplitude (90 degrees). The frequency response is analyzed according to servosystems theories. The results show that there are causes of non-linearity in PAO2 and PACO2 variations, more complex for PAO2, and that the amplitude of the variations is two to three times greater for PAO2 than for PACO2. The observed transient phenomena are essentially interpreted as resulting from the differences in dynamic behavior between cardiac output on the one hand, variations in the arterio-venous gradient on the other; this effect is more pronounced for PAO2 variations. From a practical point of view, the great amplitude of transient PAO2 variations (as much as 11 mmHg) could, under certain conditions, allow, by the single continuous recording of PO2 to the mouth, to demonstrate and define the time of the arrival of an haemodynamic disturbance in patients with assisted ventilation.</p>","PeriodicalId":75638,"journal":{"name":"Bulletin de physio-pathologie respiratoire","volume":"11 1","pages":"65-78"},"PeriodicalIF":0.0,"publicationDate":"1975-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12369293","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":"Reproducibility and correlation of tests of 'small airways disease'.","authors":"M F Sudlow, J F Costello, D C Flenley, J Millar","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":75638,"journal":{"name":"Bulletin de physio-pathologie respiratoire","volume":"11 1","pages":"16P-20P"},"PeriodicalIF":0.0,"publicationDate":"1975-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12369455","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":"Early detection of expiratory airflow obstruction in cement workers.","authors":"I Kalacic","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":75638,"journal":{"name":"Bulletin de physio-pathologie respiratoire","volume":"11 1","pages":"65P-69P"},"PeriodicalIF":0.0,"publicationDate":"1975-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12369294","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":"Intra- and interobserver variation on the measurement of closing volume and quantitative analysis of the alveolar plateau of the single-breath nitrogen washout.","authors":"F V Rasmussen, L H Andersen","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":75638,"journal":{"name":"Bulletin de physio-pathologie respiratoire","volume":"11 1","pages":"27P-32P"},"PeriodicalIF":0.0,"publicationDate":"1975-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12369457","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":"Measurement of closing volumes by the single-breath nitrogen washout technique in an epidemiological study.","authors":"F V Rasmussen, P C Solvsteen, L H Andersen","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":75638,"journal":{"name":"Bulletin de physio-pathologie respiratoire","volume":"11 1","pages":"21P-26P"},"PeriodicalIF":0.0,"publicationDate":"1975-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12369456","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}
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