๐ ็ธฝ็ฎ้ ๏ฝ ๐ ่ฑๆๅๆ๏ผๆฌ็ฏ๏ผ ๏ฝ ๐ ๅฎๆด็ฟป่ญฏ ๏ฝ โญ ็ฒพ่ฏ็ญ่จ
Site preparation
Site preparation
The DS is an area of normally pigmented skin harvested for transplant to the RS. Typically, it is selected from a cosmetically unimportant area such as the upper or lateral thigh, lower back, lower abdomen, or gluteal area. The depigmented lesions being treated comprise the RS.
After the DS and RS are selected, each must be depilated, cleaned, and anesthetized. Hair is removed by either depilating creams, shaving, or plucking; this reduces interference of hairs with grafting.12 Alcohol, chlorhexidine, or povidone iodine is typically used to cleanse the donor and recipient sites and can be used in combination.
Due to its flammable nature, the use of solutions with a significant alcohol content is not recommended when lasers are used for RS preparation.
For pain control, topical, local, or general anesthesia may be utilized. For small surfaces in less sensitive areas, topical anesthesia may be appropriate. For larger or more sensitive areas, local anesthesia should be administered using a field block with 1% to 2% lidocaine. Infiltration of the anesthetic within the DS is generally minimized to reduce the risk of disrupting the evenness of the skin surface. When dermabrasion is used to prepare the RS, epinephrine is avoided to allow visualization of pinpoint bleeding at the level of the dermalโepidermal junction (DEJ). When treating extensive areas, young patients, and those with high levels of anxiety, general anesthesia may be preferred.