观察治疗前后临床症状和实验室检查指标的变化。
The changes of clinical symptoms and laboratory indexes in all the patients were observed before and after treatment.
治疗12周中，生命体征、实验室检查指标均未见有临床意义的变化。
During the treatment of 12 weeks, there were no change of clinical significance found in both life signs and laboratory tests.
观察治疗前后临床症状，心电图，硝酸甘油减停率变化和实验室检查指标的变化。
The changes of clinical symptom, ECG, the stopping and decreasing of Nitroglycerin and laboratory indexes were observed before and after treatment in the groups.
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