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Is the needle manipulated in any way after insertion?

April 26, 2017insertion manipulated needle

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Is the needle manipulated in any way after insertion?

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This depends upon the effect desired. In some cases once the needle has been inserted it is not manipulated at all. In other cases it is manipulated in one of a number of different ways. For instance, many people will have heard of the twirling of the needle used for anesthesia.