Pediatric Anesthesia
Paediatric MRI under sedation: is it necessary? What is the evidence for the alternatives?
Edwards AD, Arthurs OJ (Cambridge Univ Hosps NHS Foundation Trust, UK) Pediatr Radiol 41:1353-1364, 2011§
Evidence Ranking
• B
Expert Rating
• 2
Abstract
To achieve diagnostic images during MRI examinations, small children need to lie still to avoid movement artefact. To reduce patient motion, obviate the need for voluntary immobilisation or breath-holding and therefore obtain high-quality images, MRI of infants is frequently carried out under sedation or general anaesthesia, but this is not without risk and expense. However, many other techniques are available for preparing children for MRI, which have not been fully evaluated. Here, we evaluate the advantages and disadvantage of sedation and anaesthesia for MRI. We then evaluate the alternatives, which include neonatal comforting techniques, sleep manipulation, and appropriate adaptation of the physical environment. We summarize the evidence for their use according to an established hierarchy. Lastly, we discuss several factors that will influence the choice of imaging preparation, including patient factors, imaging factors and service provision. The choice of approach to paediatric MRI is multi-factorial, with limited scientific evidence for many of the current approaches. These considerations may enable others to image children using MRI under different circumstances (Table 2).
Table 2 Summary of Evidence Available for Each Preparation Strategy. A Summary of the Level of Evidence During Imaging Studies is Provided, as Well as Studies Evaluating the Effectiveness in Other Clinical Situations
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