๐ ็ธฝ็ฎ้ ๏ฝ ๐ ่ฑๆๅๆ๏ผๆฌ็ฏ๏ผ ๏ฝ ๐ ๅฎๆด็ฟป่ญฏ ๏ฝ โญ ็ฒพ่ฏ็ญ่จ
Distal Digital Block
Distal Digital Block
The most commonly used approach to anesthetizing digits for nail surgery is the distal digital (โwingโ) block. Its advantages are a quick onset of anesthesia, the use of smaller volumes of anesthetic, and a tumescent effect providing hemostasis. Lidocaine 1% to 2%, buffered, or ropivacaine 0.25% are appropriate choices for this indication. 0.5 mL of anesthetic is injected into a point 5 mm proximal and lateral to the junction of the proximal and lateral nail fold on each side of the digit such that a total of approximately 1 mL of anesthesia is used. If a surgeon chooses to use epinephrine in their anesthetic, there should be minimal risk of intra-arterial injection due to the small caliber of arterioles in this anatomic location. If using lidocaine, then the addition of bupivacaine 0.25% to 0.5% will prolong anesthesia for up to 8 to 12 hours.