Prediction of extravascular burden of carbon monoxide (CO) in the human heart.
Prediction of extravascular burden of carbon monoxide (CO) in the human heart.
复制标题
预测人类心脏中一氧化碳 (CO) 的血管外负荷。
DOI:
10.1007/s10439-009-9814-y
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发表时间:
2010
影响因子:
3.8
通讯作者:
Bruce,MargaretC
中科院分区:
文献类型:
--
作者:
Erupaka,Kinnera;Bruce,EugeneN;Bruce,MargaretC
Clinically significant myocardial abnormalities (e.g., arrhythmias, S-T elevation) occur in patients with mild-to-severe carbon monoxide (CO) poisoning. We enhanced our previous whole body model [Bruce, E. N., M. C. Bruce, and K. Erupaka. Prediction of the rate of uptake of carbon monoxide from blood by extravascular tissues.Respir. Physiol. Neurobiol.161(2):142–159, 2008] by adding a cardiac compartment (containing three vascular and two tissue subcompartments differing in capillary density) to predict myocardial carboxymyoglobin (MbCO) and oxygen tensions (PcO2) for several CO exposure regimens at rest and during exercise. Model predictions were validated with experimental data in normoxia, hypoxia, and hyperoxia. We simulated exposure at rest to 6462 ppm CO (10 min) and to 265 ppm CO (480 min), and during three levels of exercise at 20% HbCO. We compared responses of carboxyhemoglobin (HbCO), MbCO and PcO2to estimate the potential for myocardial injury due to CO hypoxia. Simulation results predict that during CO exposures and subsequent therapies, cardiac tissue has higher MbCO levels and lower PcO2’s than skeletal muscle. CO exposure during exercise further decreases PcO2from resting levels. We conclude that in rest and moderate exercise, the myocardium is at greater risk for hypoxic injury than skeletal muscle during the course of CO exposure and washout. Because the model can predict CO uptake and distribution in human myocardium, it could be a tool to estimate the potential for hypoxic myocardial injury and facilitate therapeutic intervention.
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DOI:
10.1007/bf00584292
发表时间:
1975
期刊:
Pflügers Archiv
影响因子:
--
作者:
B. Lösse;S. Schuchhardt;N. Niederle
通讯作者:
N. Niederle
影响因子:
3.3
作者:
Bruce, EN;Bruce, MC
通讯作者:
Bruce, MC
影响因子:
6
作者:
ELIA, M;KURPAD, A
通讯作者:
KURPAD, A
DOI:
10.1023/a:1006268405585
发表时间:
1999-10-01
期刊:
INTERNATIONAL JOURNAL OF CARDIAC IMAGING
影响因子:
--
作者:
Marcus, JT;DeWaal, LK;Rossum, ACV
通讯作者:
Rossum, ACV
DOI:
10.2170/jjphysiol.53.467
发表时间:
2003
期刊:
The Japanese journal of physiology
影响因子:
--
作者:
M. Mizuno;Y. Kimura;T. Iwakawa;K. Oda;K. Ishii;K. Ishiwata;Yoshio Nakamura;I. Muraoka
通讯作者:
I. Muraoka