论文部分内容阅读
对6条成年犬施行闭胸式选择性房室结(AVN)动脉栓塞术以观察对AVN传导功能的影响。预实验证实①选择性AVN动脉插管的可行性;②注射异搏定或乙酰胆硷(ACh)后可改变AVN传导而不影响外围组织。以心房程序期前刺激及分级递增刺激法测定电生理参数对照值:窦性周长(SCL),AH及HV间期,心房及房室结的有效不应期(ERP)及AVN文氏起搏周长(WCL)。以常规股动脉穿刺冠状动脉插管法将杰氏导管选择性置于AVN动脉,造影证实后注射
Closed-chest selective AVN was performed on 6 adult dogs to observe the effect on AVN conduction function. Pre-experimental confirmed ① the feasibility of selective AVN arterial catheterization; ② injection of verapamil or acetylcholine (ACh) can change the conduction of AVN without affecting the peripheral tissues. Atrial electrophysiological parameters were stimulated by pre-atrial stimulation and graded ascending stimulus. Control values: sinusoidal circumference (SCL), AH and HV interval, effective refractory period (ERP) of atria and atrioventricular node, Long (WCL). The conventional femoral artery puncture coronary artery catheterization will be placed in the AVN Arteri catheter, angiography confirmed after injection