New airway device for ventilation and monitoring in pediatric patients undergoing MRI study.

Department of Anesthesiology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, ML 2001, Cincinnati, OH 45209, USA.
International Journal of Clinical Monitoring and Computing (Impact Factor: 1.45). 12/2011; 26(1):17-20. DOI: 10.1007/s10877-011-9326-9
Source: PubMed

ABSTRACT A method of administering continuous positive airway pressure via a new airway device to prevent upper airway obstruction and preserve spontaneous respiration under total intravenous anesthesia has been adapted for children undergoing deep sedation for MRI studies. Presented herein is a retrospective study of 45 pediatric patients, ages 5 months to 7 years, who underwent an MRI study under general anesthesia using a modified nasal vestibule airway (NVA®), a pressure-sealing nasal cannula that can be used in conjunction with an anesthesia circuit to deliver nasal-CPAP during anesthesia. After inhalation induction of anesthesia with sevoflurane, an intravenous infusion of propofol was used to maintain anesthesia. A NVA®, downsized to fit the nasal vestibule of the child, was inserted, taped in place, and connected to a Mapleson F circuit. An extra long extension of corrugated tubing, a SNOR-SCOPE® circuit stethoscope, and the fluctuations of a reservoir bag allowed monitoring and assisted respirations from the foot of the MRI table. Other monitors included CO2 sampled at the mouth and the fluctuations of a PORTEX® disposable pressure gauge. The records of 45 pediatric patients were reviewed. No significant anesthesia complications were found. A new approach is offered to maintain airway patency, monitoring and spontaneous respirations in pediatric patients undergoing MRI study. This pressure-sealing nasal cannula can deliver CPAP under anesthesia while avoiding the requirement of an invasive airway and facilitating additional monitoring and control not possible with an ordinary nasal cannula. This NVA may be used in other locations in pediatric patients where endotracheal intubation is not necessary or impossible.

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    ABSTRACT: PURPOSE OF REVIEW: The purpose of the present review is to place the current literature into historical context of what is understood about the conceptual as well as practical differences between sedation and anaesthesia, and what the potential benefits and risks may be, where paediatric imaging is concerned. RECENT FINDINGS: This review is timely, as there is an increasing demand for the expensive resource of anaesthesia service provision, above and beyond sedation provision. Adequate and appropriate training is the major issue in well tolerated drug administration: the practitioner must have appropriate skills to monitor and rescue the patient from general anaesthesia. There is an increasing understanding on what can be achieved with subanaesthetic doses of traditional anaesthetic drugs, as well as what can be achieved without access to anaesthetic drugs at all. The risk-benefit analysis must ultimately be taken on a patient-by-patient basis, and to this end should determine service provision and training requirements. SUMMARY: One single method cannot be applied to all children. Many can be sedated, but others will need anaesthesia with careful airway management, and the accompanying skilled personnel. Service models should be developed and tested to ensure maximum efficiency of service delivery.
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