When performing a dermal puncture, where should the puncture be made?

When performing a dermal puncture, the puncture should be made perpendicular to the fingerprints. This technique is important because it minimizes the risk of damaging the underlying structures, such as nerves and blood vessels, which are more concentrated along the lines of the fingerprints. By puncturing perpendicular, the puncture is less likely to cause pain and can ensure better blood flow, providing an adequate sample for testing.

Moreover, making the puncture in this manner helps to facilitate easier blood collection and reduces the likelihood of complications such as hematoma or excessive bleeding. Understanding the anatomy of the finger and the orientation of the fingerprints is critical in ensuring patient comfort and the effectiveness of the procedure.