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  • Title: Total intravenous anesthesia and spontaneous respiration for airway endoscopy in children--a prospective evaluation.
    Author: Malherbe S, Whyte S, Singh P, Amari E, King A, Ansermino JM.
    Journal: Paediatr Anaesth; 2010 May; 20(5):434-8. PubMed ID: 20337953.
    Abstract:
    INTRODUCTION: Inhalational anesthesia with spontaneous respiration is traditionally used to facilitate airway endoscopy in children. The potential difficulties in maintaining adequate depth of anesthesia using inhalational anesthesia and the anesthetic pollution of the surgical environment are significant disadvantages of this technique. We report our institutional experience using total intravenous anesthesia (TIVA) and spontaneous respiration. METHODS: We prospectively studied 41 pediatric patients undergoing 52 airway endoscopies and airway surgeries. Following induction of anesthesia, a propofol infusion was titrated to a clinically adequate level of anesthesia, guided by the Bispectral Index (BIS), and a remifentanil infusion was titrated to respiratory rate. ECG, BP, pulse oximetry, BIS level, transcutaneous CO(2) (TcCO(2)), respiratory rate, and drug infusion rates were recorded. Adverse events and the response to these events were also recorded. RESULTS: Forty-one children underwent 52 airway procedures; 17 rigid bronchoscopies and 35 micro-laryngobronchoscopies, including 18 LASER treatments, were performed. The mean (sd) age was 6.9 (5.8) years and weight 26.9 (21.2) kg. The mean induction time was 13 (6) min, and anesthesia duration was 49 (30) min. The mean highest TcCO(2) recorded during the procedures was 62.8 +/- 15.3 mmHg. Coughing occurred in 14 (27%) patients, requiring additional topical anesthesia (3), a bolus of propofol (4) or remifentanil (1), or removal of the bronchoscope (1). Desaturation below 90% occurred in 10 (19%) cases; only three required intervention in the form of temporary assisted ventilation (2) or inhaled bronchodilators (1). No laryngospasm, stridor, or arrhythmias were observed. CONCLUSION: TIVA and spontaneous respiration is an effective technique to manage anesthesia for airway endoscopy and surgery in children.
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