Effects of canine myocardial infarction on sympathetic efferent neuronal function: scintigraphic and electrophysiologic correlates.
Effects of canine myocardial infarction on sympathetic efferent neuronal function: scintigraphic and electrophysiologic correlates.
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犬心肌梗塞对交感传出神经元功能的影响:闪烁扫描和电生理相关性。
DOI:
10.1016/0002-8703(93)90661-r
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发表时间:
1993
影响因子:
4.8
通讯作者:
Dae,M
中科院分区:
文献类型:
--
作者:
Newman,D;Munoz,L;Chin,M;Franz,M;Herre,J;Scheinman,MM;Botvinick,E;Dae,M
We studied the effects of nondecentralized left stellate ganglion stimulation on regional epicardial monophasic action potential duration at 50% (APD50) and 90% (APD90) repolarization from 104 sites in 10 surviving dogs with a chronic myocardial infarction model. These effects were correlated with thallium-201 and iodine-123 metiodobenzylguanidine (MIBG) imaging to identify areas of viable but denervated myocardium. Mean infarct size was 5.2% ± 0.8% total heart weight, and the planimetered areas of denervation were always larger (18% ± 4% total heart area). During constant ventricular pacing, stellate stimulation tended to shorten the APD90only in normally innervated areas (364 ± 5 to 358 ± 5 msec) and to increase in denervated areas (358 ± 5 to 362 ± 5 msec), (pvalue not significant (NS) for prestellate and poststellate stimulation;p< 0.05 for difference between denervated vs innervated). The APD50significantly shortened in innervated areas from 287 ± 5 to 270 ± 3 msec (p< 0.05) compared with denervated areas (283 ± 4 to 274 ± 5 msec,p= NS). We conclude that MIBG imaging demonstration of denervation identifies areas with impaired shortening of the epicardial APD50in response to stellate stimulation and that nontransmural myocardial infarction produces areas of denervation larger than areas of necrosis.
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影响因子:
10.8
作者:
Peter Taggart;P. Sutton;Max J. Lab;John Dean;Frank Harrison
通讯作者:
Frank Harrison
影响因子:
20.1
作者:
A. Zaza;G. Malfatto;P. Schwartz
通讯作者:
P. Schwartz
影响因子:
2.1
作者:
Newman,D;Herre,JM;Chin,M;Scheinman,MM;Franz,M;Katzung,B
通讯作者:
Katzung,B
DOI:
10.1152/ajpheart.1989.257.5.h1523
发表时间:
1989
期刊:
The American journal of physiology
影响因子:
--
作者:
Mori,H;Pisarri,TE;Aldea,GS;Husseini,WK;Dae,MW;Stevens,MB;Hill,AC;Coleridge,JC;Coleridge,HM;Hoffman,JI
通讯作者:
Hoffman,JI
DOI:
10.1536/ihj.18.259
发表时间:
1977
期刊:
Japanese heart journal
影响因子:
--
作者:
M. Murayama;K. Harumi;S. Mashima;K. Shimomura;S. Murao
通讯作者:
S. Murao