Key result
Low-dose methoxyflurane anesthesia in pediatric patients resulted in a peak serum ionic fluoride concentration of 21.6 ± 3.3 µmol/l at 24 hours, compared to 43.9 ± 5.7 µmol/l in adults.
Why the study?
Does low-dose methoxyflurane anesthesia result in different serum ionic fluoride concentrations in pediatric patients compared to adults?
Observational (n=13)
Does low-dose methoxyflurane anesthesia result in different serum ionic fluoride concentrations in pediatric patients compared to adults?
Answers are grounded in this paper and cite their sources.
Pediatric patients exhibit lower peak serum ionic fluoride concentrations following low-dose methoxyflurane anesthesia compared to adults, suggesting differences in metabolism, clearance, or storage.
Serum ionic fluoride concentrations during and following low-dose (6.0 mg/100 ml, 3 hours) methoxyflurane anesthesia and elective operation were measured in 13 pediatric patients (mean age 10.2 years; mean weight 34.5 kg). Peak measured serum ionic fluoride concentration was 21.6 plus or minus 3.3 mumol/1 24 hours after anesthesia. In a previously reported study of adult patients (47.5 years; 71.9 kg), the peak measured serum ionic fluoride concentration was 43.9 plus or minus 5.7 mumol/1 24 hours after low-does (6.8 mg/100 ml,3 hours) methoxyflurane anesthesia. Possible explanations for lower serum ionic fluoride concentrations in pediatric patients comared with adults include 1) slower metabolism of nethoxyflurand; 2) increased renal clearance of ionic fluoride from the blood; 3) greater sorage of ionic fluride in bone; 4) more rapid methoxyflurane elimiantion in the postoperative period. Serum uric acid increased (4.4 to 6.4 mg/100 ml, not significant) 24 hours after anesthesia and operation, while blood urea nitrogen and serum creatinine and osmolality were unchanged postoperatively.
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Stoelting et al. (1975) conducted an observational in Elective operation requiring anesthesia (n=13). Low-dose methoxyflurane anesthesia vs. Adult patients (historical cohort) was evaluated on Peak measured serum ionic fluoride concentration 24 hours after anesthesia. Low-dose methoxyflurane anesthesia in pediatric patients resulted in a peak serum ionic fluoride concentration of 21.6 ± 3.3 µmol/l at 24 hours, compared to 43.9 ± 5.7 µmol/l in adults.
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