Difference Between Subcutaneous Anesthesia and Intradermal Anesthesia

Intradermal injection is a method of injecting a small amount of liquid medicine between the epidermis and the dermis. It is a pioneering step for local anesthesia. First, a needle is inserted at one end of the surgical incision line, and the oblique side of the needle is pierced into the skin. Skin-like bulge, called Pichu. Pull out the needle, insert the needle again at the edge of the first pichu, and do the same to form the second pichu, thus forming a pichu belt on the incision line. The skin and subcutaneous tissue can be incised by injecting local anesthetic into the subcutaneous tissue through the skin mound. The purpose of the above procedure is to make the patient feel pain only when the first needle is inserted.

Subcutaneous injection is a method of injecting a small amount of medicinal solution into the subcutaneous tissue. For local anesthesia or preoperative drug delivery.

The depth of puncture is different. The intradermal injection method is injected between the epidermis and the dermis, and the subcutaneous injection method is injected into the subcutaneous tissue. Generally, intradermal injection anesthesia is the pioneer step of subcutaneous injection anesthesia. The pain of the drug makes the patient feel pain only when the first needle is inserted.

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