期前收缩

In order to study pathogenesis of primary changes in ventricular extrasystole ST-T and its clinical significance, 57 patients in conformity with diagnostic standard in primary changes of VPBs ST-T and their concerned parameters were carefully analysed.

为研究室性期前收缩伴原发性ST-T改变的发生机制及临床意义，分析57例符合室性期前收缩伴原发性ST-T改变诊断标准的患者的相关参数，并与58例无器质性心脏病证据的室性期前收缩患者比较。

With physiological, pharmacological and biochemical techniques, we studied the mechanisms of hypothalamic stimulation-induced pressor reaction and ventricular extrasystole and the inhibitory effect of deep peroneal nerve input on these neurogenic abnormal cardiovascular activities in order to reveal the regulatory effect of deep somatic nerve input on the cardiovascular activities and explain the mechanisms of the occurrence and cure of some cardiovascular diseases.

本工作采用多学科的实验技术研究了刺激兔下丘脑诱发血压升高和室性期前收缩的发生机制及刺激腓深神经对此神经源性心血管异常活动的抑制机理，旨在揭示躯体深部神经传入冲动对心血管活动的调节作用，并阐明某些心血管疾病的发生和治疗原理。

Methods Animals were randomly and equally divided into five groups: saline control group, positive drug control group, low-dose, medium-dose and high-dose crocetin group. Animals were anesthetized with urethane (1.2 g/kg), then followed by the perfusion of aconitine (10 μg/mL) through caudal vein in rats, or of ouabain (9 μg/mL) through external jugular vain in guinea pigs in a constant velocity of 0.1 mL/min, and the emergence time of ventricular fibrillation, ventricular extrasystole, ventricular tachycanlia and cardiac arrest were then detected and recorded. The recorded time was then translated to the cumulated amount of aconitine and ouabain. Experimental arrhythmia was induced by rapid injection of 4% CaCl2 (140 mg/kg), and the emergence time, persistence time, incidence and death of arrhythmia after the administration were observed.

将实验动物随机分为生理盐水组，阳性药物对照组，藏红花酸高、中、低剂量组，SD大鼠采用1.2 g/kg乌拉坦麻醉后，从尾静脉匀速(0.1 ml/min)灌注10μg/ml乌头碱溶液，豚鼠麻醉后从颈静脉匀速(0.1 ml/min)灌注9μg/ml哇巴因溶液，观察出现室性期前收缩、室性心动过速、室颤和心脏停搏的时间，然后换算成乌头碱和哇巴因的累积量；快速推注4%氯化钙(140 mg/kg)诱导大鼠心律失常，观察给药后心律失常出现时间、持续时间、心律失常发生数及死亡数。

The cardiogram when be admitted to hospital has room sex period before contractive, the 2d after be admitted to hospital does dynamic cardiogram examination, by room sex rhythm of the heart wrong Lown classifications law [2] . A regards this research as the object with the person that finish order and degree, random cent is two groups, remedial group 30, male 16, female 14, average age 32 years old of; contrast group 30, male 13, female 17, average age is 34 years old.

入院时心电图有室性期前收缩，入院后第2d做动态心电图检查，按室性心律失常的Lown分级法[2]。a以下等级者作为本探究对象，随机分为两组，治疗组30例，男16例，女14例，平均年龄32岁；对照组30例，男13例，女17例，平均年龄34岁。

The inhibitory efFect of deep somatic nerve stimulation on the HVEs does not depend upon the buffer nerves, but is related to the function of medial medulla oblongata.

上述结果表明：化学感受性反射能易化刺激下丘脑诱发的室性期前收缩，而压力感受性反射可以抑制这种室性期前收缩，但躯体传入冲动对这种心律失常的抑制作用并不依赖于缓冲神经的存在，而有赖于延做中线核群的完整性。

And quiver to the room of fast abidance , the room attacks , reach clonic the sex on the room tachycardia cannot be able to bear or endure the person that suffer , the patient that the room that high room room conducts block sluggish and frequency hair , much source contracts before sexual period , cannot work not only , and should treat actively

而对快速的持续的房颤、房扑，及阵发性室上性心动过速不能耐受者，高度房室传导阻滞及频发、多源的室性期前收缩的患者，不仅不能工作，而且要积极治疗。

GFA had tendency to be more efficacy than propafenone in reducing the number of ventricular ectopy.

减少室性期前收缩的疗效有高于盐酸普罗帕酮（分别为66.9%；54.5%）的趋势。

Results Among the 65 fetuses, 12 were found with sinus bradycardia, 8 with sinus tachycardia, 5 with supraventricular tachycardia, 28 with atrial premature beat, 7 with premature ventricular and 5 with atrioventricular block.

结果 诊断65胎心律失常，其中窦性心动过缓12胎，窦性心动过速8胎，室上性心动过速5胎，房性期前收缩28胎，室性期前收缩7胎，房室传导阻滞5胎。

Methods Artificially replay the Dynamic electrocardiogram of 45 cases of PAf,record the time of atrial fibrillation,and identify the site of atrial premature beat.

方法对45例PAf患者的动态心电图人工回放，记录心房颤动发作次数、发作时间、发作前三个心房周期、联律间期，并根据触发 Af的房性期前收缩的P波形态确定房性期前收缩部位。

Results showed that long _ cycle leading to atrial fibrillation and flutter were mostly compensating period due to atrial premature beat or obviously sinus bradycardia.

结果显示：心房颤动或心房扑动发生前的长周期多见于房性期前收缩后代偿间歇及明显窦性心动过缓等心律失常；长短周期现象对心房颤动、心房扑动的启动作用可经心脏的程序刺激诱发和复制；6例患者经DDD起搏治疗，阵发性心房颤动及心房扑动的发生率明显下降，部分病例还需服用抗心律失常药物。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐