
[解剖] 房室结
Objective To investigate cell type and size of fetus atrioventricular node.
目的探讨胎儿房室结内的细胞类型和大小。
Results: Compared with myocardial, the levels of SDH and LDH in atrioventricular node area in model group and control group were lower.
测量房室结各部组化反应的平均灰度值。 结果:房室结区各部SDH、LDH的染色均比普通心肌弱。
Methods HE staining was applied on the frozen sections of ***** rat heart to identify the sinoatrial node (SAN), atrioventricular node (AVN), and posterior nodal extension (PNE).
方法制备成年大鼠心脏冰冻切片,结合大体位置和HE染色结果快速辨认出窦房结、房室结和结后延伸。
Conclusion In patients with dual atrioventricular node pathways and a documented but noninducible PSVT, catheter ablation of slow-pathway is highly effective in preventing the tachycardia.
结论在具有房室结双径路的有记录的不能诱发的PSVT患者中,导管射频消融慢径路在长期预防心动过速时是有效的。
There is this specially adapted system of muscle and nerve tissue in the heart—the sinoatrial (SA) node, the atrioventricular node, and the Purkinje fibers—which sets the rhythm of the heart.
心脏中有一套由肌肉和神经组织构成的特殊体系,它们控制着心脏的节奏。 这个体系由窦房结、房室结和浦金氏纤维(Purkinje fibers)组成。
The ultra-structures and the connection patterns of the conduction relevant cells in different layers of the rabbit atrioventricular node were investigated.
目的探讨房室结不同层面与细胞传导有关的细胞超微形态及连接方式有无差异。
However, another kind of SSS associated with sinus node and atrioventricular node dysfunction, characterized by long P-R interval, has not yet been reported in the literature.
另一种虽也伴有双结功能异常,但主要特征为长P-R的病例则尚未见报导。
Ohjective: To study the morphological aspects corresponding to the complex electrophysiological signs of dual (multi) -pathway and reentry of the atrioventricular node (AVN) area.
目的:为探讨心传导系房室结区双(多)径路传导、折返等复杂电生理的形态学基础。
Results The cell type of atrioventricular node in fetus hearts were composed of light, dark and transitional cells.
结果胎儿房室结的细胞主要为亮细胞、暗细胞和移行细胞。
The present results suggest that the parasympathetic fibers in the atrioventricular node and the bundle of His originate from the cholinergic neurons in the interatrial septum.
该结果证实房室结及房室束区副交感神经纤维来源于房间隔内的胆碱能神经元。
Objective: To observe the effect of experimental myocardial lesion on dehydrogenase in rat atrioventricular node area and to discuss the mechanism of arrhythmia induced by myocardial lesion.
目的:观察心肌损伤对房室结区脱氢酶的影响,探讨心肌损伤引起心律失常的机制。
Conclusion The results suggest that dle effect of parasympathetic nerve activity on atrioventricular node function is larger than that of sinoatrial node.
结论提示迷走神经对房室结功能影响大于对窦房结功能影响。
Care should be taken to avoid injury of atrioventricular node and coronary vessels.
术中注意避免损伤传导束和冠状血管。
Conduction block. A block of your heart's electrical pathways can occur in or near the atrioventricular node, which lies on the pathway between your atria and your ventricles.
传导阻滞 在心脏电脉冲的传导通路上,很多位置——比如在连接心房与心室的房室结附近,或是通向两个心室的通路(束支)上——都可能发生电信号的阻滞。
Objective To evaluate the safety and efficacy of the procedure with atrioventricular node ablation and pacemaker implantation in patients with refractory atrial flutter and atrial fibrillation.
目的评价房室结消融加永久起搏器植入治疗难治性房扑房颤的安全性和有效性。
It is characterized by sinoatrial node dysfunction and often includes atrioventricular node disease and bundle branch block.
它的特征是窦房结功能障碍并常伴有房室结疾病和束支传导阻滞。
The capillary density in the lower part of the main trunk of the atrioventricular node artery was greater than that in the upper and anterior parts.
以房室结动脉主干为界,其下方毛细血管密度较大,其上方及前方较小。
Atrial pacing at different frequencies can reveal atrioventricular node can not be present at a frequency of electrophysiological phenomena.
不同频率心房起搏也可揭露房室结在某一频率下不能呈现的电生理现象。
To evaluate the electrophysiological characteristics of antrograde and retrograde atrioventricular node conduction in the patients with or without coronary artery stenosis.
比较冠状动脉狭窄与冠状动脉正常者,其房室传导系统房室顺传及室房逆传的电生理特征。
Objective To analyze the relation between the changes of fast pathway antegrade effective refractory period after slow pathway ablation and the conductive features of atrioventricular node.
目的对房室结慢径消融术后快径路前传不应期的变化与房室结传导特性的关系进行分析。
Conclusion: Compared with myocardial, metabolism of anaerobic and oxygen is lower and un-balanced in atrioventricular node area;
结论:房室结区的有氧代谢、无氧代谢均比普通心肌低;房室结区各部的代谢不均衡;
Atrioventricular (AV) node ablation has been used to treat symptomatic atrial fibrillation with poor rate control, although these stu***s have contained few subjects with low ejection fractions (EFs).
尽管一些研究包括少数低射血分数的患者,房室结消融仍习惯上用于治疗有症状的房颤患者控制节律。
The present study was undertaken to investigate the effects of NO on spontaneous activity of rabbit atrioventricular (AV) node cells and the underlying mechanism.
本实验的主要目的是研究NO对家兔房室结细胞自发电生理活动的效应及其作用机制。
A single lead VDD pacing system (Dromos SL and SL 60/13 up) was implanted in 13 patients with high degree atrioventricular block(AVB) and normal sinoatrial node function.
对13例窦房结功能正常的高度房室传导阻滞患者植入单根电极导管VDD起搏系统,并进行随访观察。
The atrioventricular block animal model after cell transplantation can confirm that the sinoatrial node pacemaker cell can work effectively.
进行细胞移植后建立的房室传导阻滞动物模型可证实窦房结起搏细胞有一定的作用。
Some patients with atrioventricular nodal reentrant tachycardia(AVNRT) manifest smooth av node function curves.
部分房室结折返性心动过速(AVNRT)患者的房室结传导曲线呈“平滑”状态。
房室结(atrioventricular node)是心脏传导系统中的关键结构,位于右心房后壁的科赫三角区域。其主要功能是将来自窦房结的电脉冲传导至心室,并产生约0.1秒的生理性延迟,确保心房完成收缩后再触发心室收缩。
该结构由特殊分化的心肌细胞构成,具有自律性和传导性双重特性。在病理状态下可能出现房室传导阻滞,表现为PR间期延长或心室漏搏,这种情况常需通过心电图检测和心脏起搏器治疗。
根据《Gray's Anatomy》最新版描述,房室结的血液供应90%以上来自右冠状动脉的后降支分支,这种特殊的血供模式解释了部分下壁心肌梗死患者易并发传导障碍的机制。美国心脏病学会(ACC)2023年临床指南指出,房室结功能的完整性对维持60-100次/分钟的正常心率具有决定性作用。
房室结(Atrioventricular Node,简称AV Node)是心脏传导系统的重要组成部分,属于心脏电生理活动的关键结构。以下是详细解释:
1. 定义与位置
2. 核心功能
3. 临床关联
词源解析
若需了解更专业的心脏电生理机制或相关疾病诊疗标准,建议参考《心脏电生理学》教材或临床指南。
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