RESUMO
OBJECTIVE: Local infiltration of epinephrine before surgical procedures is a well-accepted technique to promote vasoconstriction. Typically, the dose of epinephrine is limited by the co-administration of local anesthetic as well as the risk for arrhythmogenesis and hemodynamic changes. In addition, some controversy exists regarding the acceptable dose of epinephrine given to children. This retrospective review examines the use and safety of "high-dose" epinephrine in palatoplasty at our cleft-craniofacial center. DESIGN: A retrospective review of epinephrine use in primary palatoplasty at a tertiary children's hospital from 2003 to 2007 was performed. Operative and anesthetic records were reviewed for hypertension (systolic blood pressure, >120 or diastolic blood pressure, >70) and tachycardia (>190 beats per min) as defined by the American Heart Association guidelines, as well as dysrhythmias, intraoperative complications, and postoperative complications. RESULTS: A total of 102 patients who underwent consecutive primary palatoplasties performed by a single surgeon were identified. After the induction of anesthesia and before incision, the patients received an initial epinephrine infiltration (without local anesthetic) up to a maximum 10 µg/kg. The average total dose of epinephrine administered during palatoplasty was 12.8 µg/kg (range, 3.2-75.0 µg/kg). Doses up to a maximum of 10 µg/kg were administered as needed at 30-minute intervals. No instances of clinically unstable tachycardia or hypertension occurred. A total of 21.6% of the patients (22/102) experienced an instance of hypertension, and only 13.7% of these (14/102) were related to epinephrine administration. One (1%) postoperative fistula was identified. CONCLUSIONS: Locally infiltrated high-dose epinephrine during palatoplasty can be safely used as a means of vasoconstriction. Doses reaching a maximum of 10 µg/kg, administered as needed at 30-minute intervals, do not seem to be a significant risk for hemodynamic instability, intraoperative complications, or postoperative complications.