心气虚即“心气不足”。为心气虚损，功能减退，致运血无力，心动失常的病理变化。主要症状有心悸、短气（活动时加剧）、胸闷不舒、自汗、脉细弱或结、代。多见于某些虚弱病患者，以及贫血、心律不齐、神经衰弱等。
目的观察、探讨人参注射液对冠心病心绞痛心气虚证的疗效及作用机理。
To investigate the therapeutic effect of Ginseng injection(GI) for deficiency of heart-qi syndrome of angina and its mechanism of actions.
比较心脏起搏器治疗前心气虚证、心血虚证症候积分与CO、心率的相关性。
The difference of the syndrome manifestation scores on the heart Qi-deficiency and the heart Blood-deficiency and co, HR before treatment of heart pacemaker.
左室舒张功能评价对心气虚证诊断有高敏感性(87%)，左室收缩功能则有高特异性(88%)。
The left ventricular diastolic function showed high susceptibility (87%) and the left ventricular systolic function showed high specificity (88%) for HQD evaluation.
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