After a drug is approved, it is subject to post-market surveillance.
药品被审批之后就要接受市场的监督。
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The FDA hopes this will lead to more efficient and accurate identifying of devices in the case of adverse event reporting, post-market analysis, managing device recalls and inventory documentation.
The re-evaluation of the effectiveness of new drugs is of great importance when they are in post-market for there exist some limitations in clinical trials before these drugs are put on the market.