Reduced resistances of septal artery collateral channels after cardiac sympathectomy.
Reduced resistances of septal artery collateral channels after cardiac sympathectomy.
复制标题
心脏交感神经切除术后间隔动脉侧支通道的阻力降低。
DOI：
10.1007/bf02070162
复制
发表时间：
1983
影响因子：
9.5
通讯作者：
Jones,CE
中科院分区：
文献类型：
--
作者：
Scheel,KW;Jones,CE
We have shown that chronic cardiac sympathectomy reduces coronary collateral resistances. The present experiments in isolated dog hearts delineated the role of intramyocardial collateral channels from the septal (SEP) to the circumflex (CIRC), left anterior descending (LAD), and right (RT) coronary arteries in this phenomenon. In 11 controls and 8 2-wk sympathectomized hearts, a retrograde flow technique was used to determine collateral resistances between the epicardial arteries (CIRC, LAD, RT). Collateral resistances between the CIRC and LAD and between the LAD and RT were 42–68% less in sympathectomized hearts (P<0.05). Collateral resistances from the SEP to each epicardial artery were determined from retrograde flows simultaneously collected on each epicardial artery when the SEP was the only vessel perfused. Collateral resistances from the SEP to the CIRC and LAD were 51–59% less in the sympathectomized hearts (P<0.05). Thus, intramyocardial channels from the SEP to the left coronary arteries show reduced resistances after sympathectomy and can provide a substantial portion of the increased collateral flow to these vessels.
