as such是习语，意为“照此, 象这样, 就这一点而论”，常位于句首，有时也位于句中。例如：

As such, evolution did not come out of zero. 照这么说来，进化就不是无中生有。

As such, it changes the nature of some things. 正因为如此，它改变了某些事物的本质。

The government is the main contributor and, as such, controls the project. 政府是主要的出资人，因此，控制着这项计划。

It was a doctor that she introduced herself, and as such she got a VIP card.  

老师 请问这个as such（作为）能换成so that （因此）嘛? 

     【答】句子应该是：It was a doctor that she introduced herself to, and as such she got a VIP card.  其中的 It was a doctor that she introduced herself to 是 It was ... that 强调结构。 introduce oneself to ... 的意思是“向 ......作/做自我介绍“。如：

He introduced himself to the class. 他向全班做了自我介绍。（摘自《韦氏高阶英汉双解词典》p.1111）

       网友句子中的 as such 意为“因此”，可以换成so that。

      A simple governor is dependent on gravity; as such it must be kept vertical. 简单的调速器是依靠重力的作用，因此，它必须保持垂直。（摘自赵振才：《英语常见问题解答大词典》增订版第五版 p.171）