The Effect of Aerobic Exercise Combined with Rehabilitation Nursing on the Heart Function, Heart rate Fluctuation and Quality of Life in Elderly Patients with Coronary Heart Disease[Abstract] Objective: To analyze the effect of aerobic exercise combined with rehabilitation nursing on the heart function, heart rate fluctuation and quality of life in elderly patients with coronary heart disease. Methods: 150cases of elderly patients with coronary heart disease who were treated in our hospital from January 2019 to January 2020, randomly divided into two groups according to the random number table method, 75 cases in the control group were given routine rehabilitation nursing, 75 cases in the experimental group were given aerobic exercise combined with rehabilitation nursing, the heart function, heart rate fluctuations and quality of life after nursing were compared between the two groups. Results: In the experimental group, the LVESD and LVEDD after nursing were shorter than the control group, while the LVEF was higher than the control group(P