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《心脏杂志》[ISSN:1009-7236/CN:61-1268/R]

期数:

1995年第1期

页码:

8-12

栏目:

论著

出版日期:

1995-01-01

文章信息/Info

Title:

Changes of myocardial contractility during centric arrhythmia

作者:

蒋 萌¹ 朱思明² 袁孝如²

江苏省中医院生理实验室 南京 210029 2南京医学院生理教研室 南京 210024

Author(s):

Jiang Meng¹; Zhu Siming²; Yuan Xiaoru²

1Physiology Laboratory，Jiangsu Hospital of Traditional Chinese Medicine，Nanjing 210029 2Department of Physiology，Nanjing Medical College，Nanjing 210024

关键词:

中枢性心律失常; 心肌收缩力; 杏仁核; 等容收缩相

Keywords:

centric arrhythmia; cardial contractility; amygdaloid complex; isovolumetric contraction phase

分类号:

-

DOI:

-

文献标识码:

-

摘要:

以电刺激家兔杏仁核建立心律失常模型，通过左颈总动脉心室插管法检测等容收缩相各项指标以反映收缩力变化。结果表明：中枢性心律失常时，各种异位心律产生的心肌收缩力均较窦性心律下降。心律影响心肌收缩性，其生理性最大缩短速度(Vpm)和心电图R*R间期呈线性相关。窦性心动过缓心律时产生的室上性期前收缩．其收缩力有可能超过前面窦性心律的收缩力。

Abstract:

This work was performed on rabbit arrhythmia model produced by electrical stimulation of amygdaloid complex．At the same time the indexes of isovolume contraction phase which demonstrated the change of myocardial contractility was examined by left ventricular catheterization via the rabbit carotid．Results suggest that the level of the myocardial contractility with ectoplc arrhythmla was lower than that of the sinus rhythm．Changes of heart rate affected the myocardial contractility．Physiological maximal shortening velocity(Vpm)was correlated with ECG R-R duration．During the period of sinus bradycardia，the level of contractility with supraVentrlcular premature seems higher than that of sinus bradycardia．

参考文献/References

［1］Fallers AA．Pathway mcxtiating hypotension elicited by stimulation of amygdala in the rat．Am．J Physiol 1975;228(5)：1358 .

［2］ Bruce SK．Cardiovascular responses elicited by electrical stimulation of the amygdala central nucleus in the rabbit.Brain Res 1982；234：251.

［3］袁孝如．中枢性心律失常的动物模型及其机理的初步探讨．生理学报1983；3(3)：25.

［4］何瑞荣．心血管生理学．北京：人民卫生出版社，1987：74.

备注/Memo

备注/Memo:

Received 1993-05-03；revised 1994-11-08

常用功能

更新日期/Last Update: 1995-01-01