RESUMO
BACKGROUND: Propofol use is contraindicated in patients on ketogenic diet (KD) due to higher risk of propofol infusion syndrome (PIS). This study is intended to provide a descriptive analysis of our experience with propofol bolus and short infusions for anesthetic care in patients on the KD and to evaluate if any signs of PIS were observed. METHODS: All patients on the KD who underwent anesthesia with propofol between 2012 and 2022 were reviewed. Anesthetic encounters and charts were studied for type of surgical procedure; signs of PIS, including new cardiac arrhythmias, acidosis, or rhabdomyolysis in the periprocedural period; hypoglycemia; unplanned admissions within 24 hours of the procedure; if procedure was unexpectedly aborted; and increased seizure frequency within one week. RESULTS: We identified 65 patients, aged from one to 20 years who underwent 165 anesthetic encounters with propofol, of which 123 were boluses and 42 were infusions. In bolus dosing, the average dose was 2.8 mg/kg (0.7 to 12.8 ± 1.8 mg/kg). Of these, four encounters developed acidosis, one developed rhabdomyolysis, and one developed increased seizures. With infusions, the average infusion rate was 9 mg/kg/hour, with mean infusion duration of 83 minutes (10 to 352 ± 75 minutes). Of these, one developed acidosis and one increased seizures. No cases of PIS were identified. None of the adverse effects were attributed to propofol. CONCLUSIONS: Boluses and brief infusions of propofol for anesthetic use in patients on the KD did not cause PIS in our cohort.
