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Effect of preoperative paracetamol on gastric volumes and pH in children

B J Anderson, S G Rees, A Liley

    Paediatric Anaesthesia
    |May 13, 1999
    PubMed

    Insights

    Preoperative paracetamol elixir does not affect gastric contents in children undergoing adenotonsillectomy. This study found no significant difference in gastric volume or pH between elixir and suppository administration, supporting preoperative use.

    Area of Science:

    • Pediatric Anesthesiology
    • Pharmacokinetics
    • Gastrointestinal Physiology

    Background:

    • The impact of preoperative oral paracetamol on pediatric gastric contents is not well-established.
    • Understanding gastric content changes is crucial for anesthetic safety, particularly regarding aspiration risk.

    Purpose of the Study:

    • To investigate the effect of preoperative paracetamol elixir administration on gastric volume and pH in children.
    • To compare the gastric effects of preoperative paracetamol elixir versus intraoperative paracetamol suppositories.

    Main Methods:

    • Children undergoing elective adenotonsillectomy were randomized to receive either paracetamol elixir or suppositories.
    • Gastric residual volume and pH were measured after anesthetic induction using an orogastric tube.
    • Data analysis compared mean residual gastric volume and pH between the two groups.

    Main Results:

    • No significant difference was observed in mean residual gastric volume (0.083 ml/kg) or pH between the elixir and suppository groups.
    • Paracetamol elixir was rapidly absorbed, indicating no significant alteration of gastric contents prior to surgery.
    • The study included children with a mean age of 8.5 years and weight of 35 kg.

    Conclusions:

    • Preoperative administration of paracetamol elixir does not alter gastric contents in pediatric patients.
    • Rapid gastrointestinal absorption suggests paracetamol elixir can be safely administered preoperatively for routine procedures.
    • This finding supports the use of preoperative paracetamol elixir for analgesia in pediatric surgical patients.

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