心房内的

Objective: To explore the value of CT enhanced scanning in diagnosing thrombosis in the left cardiac atrium .

目的：探讨CT增强扫描对诊断左心房内血栓形成的价值。

Results: In all 13 patients, non-contact mapping showed AFLs confined to the RA with the cycle length (230 ±20 ms). 6 patients presented single-loop re-entry circulating around the central obstacle in the anterolateral wall through the channel between the CO and the crista terminalis .Seven patients presented "8" re-entry, and the gap of upper and lower loop located in CT in 4 cases, another 3 cases with upper loop and free-wall single-loop re-entry. RF of CT gap and/or the free-wall channel was effective in eliminating these AFLs in 13 patients.

结果 经 NMS标测证实13例患者折返均在右房内，激动在右房内的折返平均时间为230±20ms.6例房扑患者为单折返环，围绕右房中心障碍区折返，激动在心房的前壁穿过中心障碍区与界瘠之间的狭窄通道。7例患者证实为2个折返环，其中4例表现为上下折返环形成"8"字形折返，共同的传导通道在界瘠；另外3例表现为折返环1个在心房上部，1个在前游离壁。13例消融界瘠或前游离壁后房扑终止。

Using paraffin and cryostat sectionings,the distribution of P cells and T cells in 5 grown-ups right atrium was observed.

利用石蜡和恒冷切片方法全面观察了5例成年人右心房内的细胞形态。

Regarding to different successful ablation monitoring indicatives, patients were divided into ablation group in traditional methodand ablation group with atria pacemaking showing slow pathway conduction block as successful ablation indicative.86of groupⅰ presented junction rhythm in dischargeing 15s or early pacemade then consecutively discharged 60～90 seconds; in groupⅱ 67 patients after dischargeing 15s showed junction rhythm or after early pacemaking delayed dischargeing to 20s then stopped dischargeing.

按不同的有效消融判断指标分为传统方法消融组和以心房起搏显示慢径前传导阻滞作为有效消融指标消融组。i组86例在放电后15 s内以出现交界心律或早搏后继续放电60~90 s；ii组67例放电15 s内出现交界心律或早搏后延迟放电至20 s停止放电，以术前av1﹕1最短间期心房刺激（s1s1）显示慢径前传阻滞后停止起搏继续放电至60 s。

It is implicated that multiple reentry circuits have been the dominant mechanism of AF.

AF的发病机制可能与心房内多个折返环形成有关。

Indeed, by increasing the pressure in the right atrium and in the left ventricle with respect to extrathoracic vascular beds, positive-pressure ventilation affects the pressure gradients for both systemic venous return and left-ventricular ejection increase; Fig.

实际上，机械正压通气引起的右心房、左心室内的压力增加，这样和胸腔外血管床形成一定的压力梯度，此压力梯度会影响心肺两系统的静脉回流及左心射血（增加，见图1）。

In the early stages, the intrapulmonary eins are connected to the eins of the systemic circulation.

在发育早期，肺内静脉与体循环静脉相连，而到了晚期，肺内静脉与起源于心房的原始肺静脉相连。

METHODS: 24 rabbits were divided into four groups: control group; rapid pacing group; adenosine perfusing group; selective adenosine receptor antagonist perfusing group. The index of observed: time of repolarization in monophase action potential (APD90); the active level of A1 adenosine receptor; the level of free calcium in the atrium cells and the ability of atrium cell to release calcium.

新西兰白兔24只，随机分为4组：①对照组：常规克氏液灌流，②腺苷灌流组：灌流液中加入2umol/L的腺苷，③心房快速起搏组：常规克氏液灌流+心房快速起搏，④腺苷受体拮抗剂干预组：克氏液+DPCPX（100nmol/L）灌流+心房快速起搏；观察指标：①起搏前后心房肌单相动作电位复极时间的变化；②起搏组和对照组的心房肌腺苷A〓受体活性对比；③心房肌细胞内游离钙含量以及氯化钾激动后钙释放能力对比。

In the chloralose-urethanized or curarized rabbits,infusion of saline or blood into the right auricle in amount of 8—10 ml/kg at the rate of 0.5—1.0 ml/sec induced bradycardia and hypotension.

一在氯醛糖和氨基甲酸乙酯麻醉的兔或未麻醉的箭毒化兔，右心房内输液(输入量为8—10毫升/公斤，输入速度为0.5—1.0毫升/秒)，可规律地引起心率减慢和动脉血压下降。

Methods From Jan. 1999 to July 2004, the clinical data of 12 patients with Scimitar syndrome were analyzed retrospectively, 10 patients underwent repair by intra-atrial baffles approach, one patient by connecting scimitar vein and left atrium with artificial blood vessel under cardiopulmonary bypass, and one patient by directly reimplanting the scimitar vein to left atrium without cardiopulmonary bypass.

回顾分析我院1999年1月～2004年7月12例镰刀综合征患者的临床资料，10例采用经典房内通道技术；1例采用体外循环，用人工血管将镰刀静脉与左心房相连；1例在非体外循环下直接将镰刀静脉吻合在左心房。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。