英语语法分析

Routine postoperative thyroxin replacement therapy can help to reduce the postoperative recurrence of NG.

结节性甲状腺肿手术治疗后必须采取甲状腺激素治疗，才能有效降低术后复发率。

Objective: To observe clinical effects of low dose L-thyroxin on the aged critical congestive heart failure (CHF).

目的：探讨小剂量甲状腺素在老年重症心力衰竭(CHF)中的临床疗效。

Methods: Yiru Decoction and thyroxin tablet were administered in patients of treatment group, while only the latter given in control group.

方法：治疗组用抑乳汤配合甲状腺素片治疗；对照组用单纯甲状腺素片治疗。