心脏收缩的

The relationship between the cardiotonic effects and the cardiac sarcolenmmal Na〓, K〓-ATPase activities by strophanthidin in isolated guinea-pig heart

本研究通过对正常和衰竭的离体豚鼠心脏和急性分离的心室肌细胞的研究，在器官水平分析了毒毛旋花子苷原的强心作用及其与Na〓，K〓-ATP酶活性间的关系，在细胞水平分析了毒毛旋花子苷原提高心肌收缩力的可能机制。

The best example of S1 variation with P-R interval occurs in complete heart block, in which atrial and ventricular contractions are dissociated.

S1随 P-R 间期而变的最好例子是在完全心脏传导阻滞期，此时的房、室收缩是分离的。

Combined with animal model of peradaptation to myocardium ischemia , the research observed the level of enzymatic dynamics of myocardium, SOD,MDA,ET and correlation peptide of calcitonin gene in peripheral blood and cardiac function, apoptic cell and expression of apoptosis regulatory gene, ultrastructure of myocardium with BIOPAC16, in situ end labeling and hybridism, optic microscope and electron microscope. The study of animal model of peradaptation to myocardium ischemia illustrated that the peradaptation and pretreatment with Wenxin capsule could be positively protective for the injury of ischemia reperfusion. The protection is mainly reflected by reduction of infarction area, correction of heart rhythm abnormality of ischemia reperfusion, melioration of the contraction and relaxation function of myocardium, recovery of the subcellular structure and themelioration of the abnormality of biochemical and bioactive substance in the myocardium.

并结合心肌缺血预适应动物模型，采用BIOPAC16导生理记录和分析处理系统处理心肌功能指标，采用原位末端标记及原位杂交技术标记凋亡细胞及凋亡相关调控基因的表达，采用光电镜技术观察心肌超微结构的变化，同时观察外周血心肌酶、超氧化物歧化酶、丙二醛、内皮素、降钙素基因相关肽等水平，结果表明心肌缺血预适应及温心胶囊预处理对心肌缺血再灌注损伤具有肯定的保护作用，其保护心脏作用主要表现在缩小心肌梗死范围、抗缺血再灌注心律失常、改善心肌收缩和舒张功能、减轻心肌超微结构损伤，调节心肌生化物质及生物活性物质的生成和释放。

The winter air temperature is low , the interior repast environment outside difference in temperature is bigger, being had to glow with health , to sweat profusely, if leaving a dining hall in a hurry when having meal , gone on foot under the cold air stimulation rustling , contracted abruptly , been fed up with easy to arouse chill blood capillary in sweat gland and hypoderm, the blood-supply having enlarged the heart bears.

冬季气温低，就餐环境室内外温差较大，进餐的时候吃得红光满面、大汗淋漓，要是匆忙离开餐厅，在瑟瑟的冷风刺激下行走，汗腺及皮下组织中的毛细血管骤然收缩，容易引起风寒头痛，还加大了心脏的供血负担。

BACKGROUND: Whereas electrical, structural, and contractile remodeling processes are well-recognized contributors to the self-perpetuating nature of AF, the impact of cardiac metabolism upon the persistence/initiation of this resilient arrhythmia has not been explored in detail.

背景：尽管电、结构和收缩重塑过程已知有利于房颤的自身维持，但心脏代谢对这种可反弹的心律失常的维持/触发的影响的细节尚未阐明。

The main problem of most patients suffering from heart failure is the decreased force of cardiac contraction. Meanwhile, the heart inotropic, chronotropic and dromotropic effect is in a state of intricacy and constant flux due to a variety of patients' condition or treatment.

大多数心力衰竭病人的主要问题是心肌收缩力的降低，与此同时，心脏变力性、变时性和变传导性也因病情的不同或者治疗的不同而处于一种复杂的、不断变化的状态。

Finally statistical analysis is conducted.Result: Orally taking Xuefu Zhuyu Tang and calming-wind medicines can ease stenocardia,improve ECG,enhance the stopped rate of nitroglycerin,better the heart contraction and dilation,regulate blood fat,promote blood rheology,lower CRP、ET、TXB2,raise NO、6-keto-PGF1αand so on,compired with the control group,it is obviously statically meaningful without obvius adverse reaction.

结果：血府逐瘀汤加治风活络药物内服治疗能有效地缓解心绞痛和临床症状；改善心电图；提高速效扩冠药的停减率；改善心脏的收缩及舒张功能；调节血脂；改善血液流变学；降低CRP、ET、TXB2的水平，升高NO、6-keto-PGF1α的水平等，与对照组相比，有显著的统计学意义，且未发现明显的不良反应。

Two of these pump blood to the lungs, where it picks up oxygen, then the other two pump this oxygenated blood throughout the body. One of these four chambers—the left ventricle—contracts most strongly to pressurise the blood.

相比之下，人的心脏只有四个心室，其中的两个心室收缩将血液压进动脉输送到肺部，在那里吸收氧气，放出二氧化碳，而另两个心室则将完成气体交换后的血液输送到到全身。

Normally the heart movements can be felt as distinct systolic and diastolic thumps.

正常时，能够感觉到心脏的运动是性质截然不同的收缩和舒张的撞击。

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