When performing heel punctures on infants, what is the maximum depth allowable?

When performing heel punctures on infants, the maximum allowable depth is 2.0 mm. This limit is established to ensure that the procedure safely collects the required blood sample without risking damage to underlying structures, such as muscles, nerves, or bones. Infants, especially newborns, have a very thin layer of skin, and their heel pads are delicate. By adhering to a maximum depth of 2.0 mm, healthcare professionals can effectively minimize the risk of complications, such as infection or osteomyelitis, which could occur if the puncture goes deeper than necessary. This recommended depth is critical for ensuring patient safety while still obtaining an adequate blood sample for testing.