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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
4
|
| pubmed:dateCreated |
1994-7-7
|
| pubmed:abstractText |
We examined whether an increase in stroke volume (SV) contributes to the increase in cardiac output that occurs when cardiac transplant patients (CT) exercise between 50% and 75% of maximum. Upright arm and leg exercise was performed by 13 CT and 10 normal controls. Cardiac output (CO2 rebreathing), expired air, and catecholamine measures were obtained at rest and at 50% and 75% of maximum. From rest to 50% of maximum both normals and CT increased heart rate (HR) and SV during arm and leg exercise. In normals, HR (arm = +17 +/- 2 min-1; leg = +21 +/- 3 min-1) was increased further at 75% of maximum but not SV (arm = 3 +/- 4 ml; leg = +2 +/- 8 ml). In CT, further increases in both HR (arm = +9 +/- 1 min-1; leg = +13 +/- 1 min-1) and SV (arm = +12 +/- 5 ml; leg = +12 +/- 3 ml) were observed at 75% of maximum. During leg exercise plasma norepinephrine was increased more in CT than in normals. Between 50% and 75% of maximum, an increase in SV is a more important mechanism for increasing cardiac output during upright arm and leg exercise in CT than in normals.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:chemical | |
| pubmed:status |
MEDLINE
|
| pubmed:month |
Apr
|
| pubmed:issn |
0195-9131
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
26
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
420-4
|
| pubmed:dateRevised |
2008-11-21
|
| pubmed:meshHeading |
pubmed-meshheading:8201896-Arm,
pubmed-meshheading:8201896-Blood Pressure,
pubmed-meshheading:8201896-Carbon Dioxide,
pubmed-meshheading:8201896-Cardiac Output,
pubmed-meshheading:8201896-Electrocardiography,
pubmed-meshheading:8201896-Epinephrine,
pubmed-meshheading:8201896-Exercise Test,
pubmed-meshheading:8201896-Heart Rate,
pubmed-meshheading:8201896-Heart Transplantation,
pubmed-meshheading:8201896-Humans,
pubmed-meshheading:8201896-Leg,
pubmed-meshheading:8201896-Male,
pubmed-meshheading:8201896-Middle Aged,
pubmed-meshheading:8201896-Muscle Contraction,
pubmed-meshheading:8201896-Norepinephrine,
pubmed-meshheading:8201896-Oxygen Consumption,
pubmed-meshheading:8201896-Physical Exertion,
pubmed-meshheading:8201896-Respiration,
pubmed-meshheading:8201896-Stroke Volume
|
| pubmed:year |
1994
|
| pubmed:articleTitle |
Cardiovascular responses to submaximal arm and leg exercise in cardiac transplant patients.
|
| pubmed:affiliation |
Henry Ford Heart and Vascular Institute, Detroit, MI 48202.
|
| pubmed:publicationType |
Journal Article
|