问 :影响心肌收缩力因素有那些 ?答 :　血液内儿茶酚胺　力 频率关系　心肌损失　　　　　　　 　　　↓　　　 　　交感神经冲动→心肌收缩力←缺Ｏ2 、高ＣＯ2 、酸中毒　　　　　　　　　 　　　 　　　　抑制心力的药物　毛地黄与其他正性肌力作用问 :心率是否也影响? Q: What are the factors that affect myocardial contractility? A: The relationship between intracranial catecholamine frequency of myocardial damage ↓ Sympathetic nerve impulses → Myocardial contractility ← lack of O2, high CO2, acidosis Inhibit the heart of the drug Foxglove and other positive inotropic effect Q: Does heart rate also affect?