Follow up Study of Crocin on Cardiac Function Protection in Patients With Breast Cancer Undergoing Neoadjuvant Chemotherapy Based on Color Doppler Ultrasound Combined With Myocardial Zymogram

According to the patient's condition, tolerance level, and personal preference, the dosage of medication was selected. During chemotherapy, the total anthocyanin tablets were divided into an experimental group (experimental group 1 and experimental group 2 based on previous heart disease) and a control group (control group 1 and control group 2 based on previous heart disease), 30 cases in each group \[experimental group: taking saffron total glycoside tablets for 8 days during each chemotherapy period (starting from the day before chemotherapy), 4 tablets/time, 3 times a day; control group: not taking saffron total glycoside tablets during chemotherapy period\]