What method should be used for skin puncture on children?

The recommended method for performing a skin puncture on children is to use a lancet to minimize trauma and pain. This approach is particularly important in pediatric patients due to their sensitivity and the need to ensure a gentle and efficient blood collection process. A lancet is specifically designed for skin punctures, creating a small, controlled prick that minimizes discomfort and risk of injury compared to larger needles.

Using a lancet allows for a quick collection of capillary blood, which is particularly useful in children, who may have smaller veins and can be more anxious about medical procedures. Additionally, this method effectively reduces the likelihood of complications such as excessive bleeding or bruising that might arise from other methods.

The other methods mentioned are less suitable for children. A large needle could cause unnecessary pain and trauma, while a butterfly needle is generally intended for venipuncture in adults or older children with larger veins. A vacuum collection device, while efficient for adults, is not appropriate for the delicate nature and smaller volume of blood required in pediatric skin puncture.