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心肌梗塞(Myocardial Infarction,MI)是心肌的缺血性坏死。为在冠状动脉病变的基础上,发生冠状动脉血供急剧减少或中断,使相应的心肌严重而持久地急性缺血所致。近年来,由于冠心病监护单位(CCU)的建立和有效地防治了致命性的心律失常,使急性心肌梗塞中原发性电学死亡日趋减少。结果心源性休克成了本病死亡的首要原因。在这些病人中,心室机械性并发症促成或加重梗塞所引起的心脏功能的抑制,成为发生休克的重要因素。心室机械性并发症包括乳头肌功能不全、乳头肌断裂、室间隔穿孔、室壁瘤、心脏破裂及心室协同失调,可迅速危及生命,及时纠治可降低病死率的特点。因此,早期诊断MI机械性关发症极为重要。而探索可靠、经济、便捷、安全的检查手段则成为内科医生极为关注的问题。
Myocardial Infarction (MI) is myocardial ischemic necrosis. In the coronary lesions, based on the occurrence of acute coronary artery blood supply was reduced or interrupted, so that the corresponding myocardial serious and lasting acute ischemia. In recent years, due to the establishment of coronary care unit (CCU) and effective prevention and treatment of fatal arrhythmias, the primary electrical death in acute myocardial infarction is reduced. Results Cardiogenic shock has become the primary cause of death of this disease. In these patients, ventricular mechanical complications contribute to or aggravate infarct-induced inhibition of cardiac function and become an important factor in the development of shock. Ventricular mechanical complications include papillary muscle dysfunction, papillary muscle rupture, ventricular septal perforation, aneurysm, heart rupture and ventricular systolic dysfunction, can quickly lead to life-threatening, timely correction can reduce the mortality characteristics. Therefore, the early diagnosis of MI mechanical complications is extremely important. And to explore reliable, economical, convenient and safe means of examination has become a physician extremely concerned about the problem.