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心脏收缩性
相关语句
  cardiac contractility
     CHANGES OF CARDIAC CONTRACTILITY INDUCED BY STIMULATION OF HYPOTHALAMIC VENTROMEDIAL NUCLEUS
     刺激下丘脑腹内侧核引起的心脏收缩性变化
短句来源
     TNFa may decrease cardiac contractility both directly and through other mediators.
     TNFα可以直接使心脏收缩性下降,也可以通过其他介质使心脏收缩性下降。
短句来源
     The experiment studied the effects of three anesthetics(urethane,pentobarbital,chloral hydrate)on the heart rate and cardiac contractility of isolated heart of toad.
     本实验采用蟾蜍离体心脏灌流方法分别观察了氨基甲酸乙酯、戊巴比妥钠、水合氯醛三种麻醉剂对心脏收缩性和自动节律性的影响.
短句来源
  “心脏收缩性”译为未确定词的双语例句
     Clinically, 45.9% of the patients complained of palpitation or precardial discomfort, 43.0% had systolic murmurs and/or ventricular extrasystole, and 25.8% were accompanied with organic heart disease.
     有45.4%患者自觉心悸或心前区闷痛,43.0%有心脏收缩性杂音和(或)室性早搏,25.8%伴器质性心脏病。
短句来源
     Effect of TPA on contractility in guinea pig heart and it’s protective effect against arrhythmia induced by chloroform in mice
     TPA对离体豚鼠心脏收缩性及对氯仿致小鼠心律失常保护作用的研究
短句来源
  相似匹配句对
     Research on Myocardial Contractility of athlete' Heart
     运动性心脏心肌收缩性现代研究
短句来源
     CARDIAC AMYLOID OSIS
     心脏淀粉样变性病
短句来源
     The Heart of a Family
     家之心脏
短句来源
     CHANGES OF CARDIAC CONTRACTILITY INDUCED BY STIMULATION OF HYPOTHALAMIC VENTROMEDIAL NUCLEUS
     刺激下丘脑腹内侧核引起的心脏收缩性变化
短句来源
     Shrinkable Tube Label
     收缩性套管式标签
短句来源
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  cardiac contractility
The depression of cardiac contractility induced by space microgravity is an important issue of aerospace medicine research, while its precise mechanism is still unknown.
      
These results indicate that NO system in cardiac myocytes is sensitive to simulated microgravity and may play an important role in the depression of cardiac contractility induced by simulated microgravity.
      
Investigations on glycerinated cardiac muscle fibres in relation to the problem of regulation of cardiac contractility-effects o
      
The present chapter provides experimental evidence to show that intracellular Na+ concentration regulates cardiac contractility effectively by altering intracellular Ca2+ concentration via the Na-Ca exchange.
      
The data suggest that Na+-Ca2+ exchange is not only involved in long-term changes of cardiac contractility but also in beat-to-beat regulation.
      
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M-mode echocardiograms at rest and during supine graded cycling workload (100, 150, 200, 250 watts, each phase lasting 3minutes)were performed in 30 male well-trained endurance athletes and 30 male healthy untrained subjects.

本文对30名男性优秀耐力运动员和30名健康无训练者在安静时和卧位逐级蹬车负荷(100瓦、150瓦、200瓦、250瓦,每级负荷3分钟)中进行了超声心动图研究。耐力组的舒末内径(LVIDd)和心搏量(SV)无论是在安静时还是在各级等量负荷中,均显著性地大于对照组(P<0.01)。随着负荷量的递增,对照组的LVIDd逐渐减小(P<0.01),耐力组的LVIDd则逐渐地增加(P<0.05)。直到250瓦负荷时才略有下降;两组的左室缩末内径均逐渐缩小,但以对照组缩小的更为明显。低强度负荷(100瓦和150瓦)时,两组的SV均较安静时增大,但在高强度负荷时.耐力组SV继续增高,对照组SV则急剧减少。低强度负荷时,两组的心输量(CO)呈平行增加,高强度负荷时,耐力组CO的增长明显大于对照组。说明有训练的耐力运动员的心力储备优于无训练者。两组的EF、mVcf和△D%以类似的方式随负荷的增加而增加。安静及各级等量负荷状态下组间比较均无显著性差异,提示有氧训练似乎对心脏收缩性无明显影响。笔者认为,动力性运动负荷中的超声心动图检查对于评价运动员左室功能是十分有用的。

517 cases of left ventricular false chorda tendineae were detected in 2375 consecutive patients by 2-dimensional echocardiograpby (2-DE), with overall prevalence of 21.8%. Most of these cases were between 30 and 59 years old. The diagnostic criterion of false chorda tendineae on 2-DE was the appearance of streak-like (77.3%) or band-like (22.7%) echos, which crossed the left ventricular cavity and did not connect to the valves, extending from variant segments of interventricular septum to apical wall (66.7%),...

517 cases of left ventricular false chorda tendineae were detected in 2375 consecutive patients by 2-dimensional echocardiograpby (2-DE), with overall prevalence of 21.8%. Most of these cases were between 30 and 59 years old. The diagnostic criterion of false chorda tendineae on 2-DE was the appearance of streak-like (77.3%) or band-like (22.7%) echos, which crossed the left ventricular cavity and did not connect to the valves, extending from variant segments of interventricular septum to apical wall (66.7%), to papillary muscle (28.6%), or to lateral free wall (4.7%). Clinically, 45.9% of the patients complained of palpitation or precardial discomfort, 43.0% had systolic murmurs and/or ventricular extrasystole, and 25.8% were accompanied with organic heart disease.

应用二维超声心动图在连续2375例中检出左室假腱索517例,检出率为21.8%,年龄以30~59岁为多。诊断标准为二个以上切面见有悬于左心室腔内与瓣膜不相连的线状(77.2%)或束状(22.8%)回声增强。假腱索起自室间隔不同水平,分别止于心尖部(66.7%)、乳头肌根部(28.6%)或心室外侧壁(4.7%)。有45.4%患者自觉心悸或心前区闷痛,43.0%有心脏收缩性杂音和(或)室性早搏,25.8%伴器质性心脏病。

Experiments were performed on anesthetized cats to observe the effect of elec-trical stimulation of the hypothalamic ventromedial nuclcus (VMH) on cardiaccontractility as judged by the change in LVSP, dp/dt_(max), V_(max), P-dp / dt, P-Indp/dt. Electrical stimulation of VMH induced an augmentary response in car-diac force, while stimulation of an area between VMH and the third ventricleled only to a decrease in cardiac contractile force. All these changes were not ac-companied by significant changes in heart...

Experiments were performed on anesthetized cats to observe the effect of elec-trical stimulation of the hypothalamic ventromedial nuclcus (VMH) on cardiaccontractility as judged by the change in LVSP, dp/dt_(max), V_(max), P-dp / dt, P-Indp/dt. Electrical stimulation of VMH induced an augmentary response in car-diac force, while stimulation of an area between VMH and the third ventricleled only to a decrease in cardiac contractile force. All these changes were not ac-companied by significant changes in heart rate and unaffected by bilateral vago-tomy. The present experiment indicates that the inotropic and chronotropic regu-lation centers of cardiac function exist in different hypothalamic areas.

本文在麻醉猫上,采用LVSP、dp/dt_(max)、V_(max)及心力环等指标,研究了刺激下丘脑腹内侧核(VMH)及其与第三脑室之间的VMH内侧邻近区(L_(0.5)引起的心脏收缩性改变。刺激VMH引起心力增强,刺激VMH内侧邻近区(L_(0.5)使心力减弱。切断两侧迷走神经后,不影响上述反应。实验结果表明:调节心脏变力性与变时性的机能结构于下丘脑某些区域中是分别存在的。

 
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