through irritated or infected tattoos. However, harm has not been clearly documented when placing epidural catheters through healthy tattooed skin; a review in the American Association of Nurse Anesthetists Journal concluded that "epidural catheter placement through lumbar tattoos is a practitioner's decision based on clinical judgment". In Current Opinion in Anesthesiology, Frédéric J. Mercier and Marie-Pierre Bonnet state that the evidence for complications when placing epidural catheters is unconvincing, but advocate avoiding the practice owing to the lack of long-term evidence. See also References Tattooing by body part Back anatomy Female beauty