The results of echo-cardiographic reexaminations for long term survivors showed that left ventricular functions improved significantly 6 to 12 months postoperatively.
长期生存者术后6～12个月行超声心动图复查，提示左心功能有显著改善。
Methods: the collagen content the types of collagen and the activity of collagen enzyme were surveyed by biochemical technique at the 3 rd, 6 th months postoperatively.
方法：采用生化法测定胶原含量、胶原类型及胶原酶的变化以反映固定3月及6月后胶原的变化。
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