The effect of acute myocardium ischemic on heart function of pregnancy rat

Objective: To investigate the effect of acute myocardium ischemic on heart function of pregnancy rat. Methods: 13 female SD rats and 6 early pregnancy rats were divided into normal group, unpregnant group with acute myocardial infarction and early pregnant group with acute myocardial infarction. The anterior branch of the left coronary artery was ligated. 3 weeks later, Image 1.31 software was used to measure areas of myocardial infarction, and to evaluate hemodynamics of heart with powerLAB4.12, and cardiac tissues were stained with Massion. Results: Compared with unpregnant group with acute myocardial infarction, the early pregnant group with acute myocardial infarction had less myocardial infarction area (28.86% vs. 36.8%), and had a higher left ventricle end systolic pressure, ±dp/dt_max, and lower left ventricle end diastolic pressure. Massion stain showed the amount of collagen of the lesion was less in the early pregnant group with acute myocardial infarction than that in unpregnant group. Conclusion: The early pregnant group with acute myocardial infarction had better heart contractive and diastolic function.