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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
5
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pubmed:dateCreated |
1976-1-26
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pubmed:abstractText |
Factors affecting erythrocyte K+ content and plasma electrolytes during light exercise were examined in 8 normal subjects and 27 patients with chronic obstructive lung disease. The patients were classified into bronchitis, emphysema and intermediate groups. Arterial blood was obtained during rest, after 2, 5, and 7 min. of exercise on a bicycle ergometer (30 km/h without mechanical brake), and at 10 and 20 min. during recovery for analysis of PO2, PCO2, plasma H+, Na+, K+, and Cl(-), erythrocyte K+ content and whole blood lactate. Plasma H+ increased significantly in all subjects after 2 min. of exercise and PCO2 rose in normal, bronchitis, and emphysema groups during exercise, whereas PO2 did not change significantly. Plasma K+ rose promptly after the beginning of exercise and remained at high values during exercise. The rapid rise in PCO2 was associated with a significant decrease of calculated erythrocyte K+ in patients with chronic bronchitis. Although changes in plasma H+ were dependent on both PCO2 and lactate, erythrocyte K+ changes were significantly related only to changes in PCO2. These results indicate that the decrease in erythrocyte K+ is mainly controlled by changes in arterial PCO2 during light exercise in patients with chronic bronchitis.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Sep
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pubmed:issn |
0014-2972
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
12
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pubmed:volume |
5
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
391-5
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pubmed:dateRevised |
2008-11-21
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pubmed:meshHeading |
pubmed-meshheading:241650-Adult,
pubmed-meshheading:241650-Aged,
pubmed-meshheading:241650-Carbon Dioxide,
pubmed-meshheading:241650-Erythrocytes,
pubmed-meshheading:241650-Forced Expiratory Volume,
pubmed-meshheading:241650-Humans,
pubmed-meshheading:241650-Hydrogen-Ion Concentration,
pubmed-meshheading:241650-Lactates,
pubmed-meshheading:241650-Lung Diseases, Obstructive,
pubmed-meshheading:241650-Middle Aged,
pubmed-meshheading:241650-Oxygen,
pubmed-meshheading:241650-Physical Exertion,
pubmed-meshheading:241650-Potassium,
pubmed-meshheading:241650-Vital Capacity
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pubmed:year |
1975
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pubmed:articleTitle |
Changes in potassium content of erythrocytes during exercise in man.
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pubmed:publicationType |
Journal Article
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