Does oxygen use during general anesthesia cause an artifact in magnetic resonance images?
H. Volkan Acar 1 * , Hasan Yiğit, Fatoş Korkulu, Ayşegül Ceyhan, Pınar Nercis Koşar, Bayazit Dikmen
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1 Ankara Eğitim ve Araştırma Hastanesi Anestezi Kliniği, Ankara, Turkey
* Corresponding Author

Abstract

Objectives: In this study our aim was to compare possible effects of two different oxygen concentrations (100% vs. 50%) on hyperintense signal abnormality (HSA) in pediatric patients undergoing cranial magnetic resonance imaging (MRI) under sevoflurane anesthesia.
Materials and methods: Thirty pediatric patients undergoing cranial MRI were studied. Sevoflurane was used for induction and maintenance of anesthesia with an MR-compatible anesthesia machine. Patients, whose airway patency was maintained with laryngeal mask, were divided randomly in two groups. 100% oxygen and 50% oxygen/50% nitrous oxide was used for maintenance of anesthesia in Group I and II, respectively. FLAIR sequence images were analyzed by a radiologist who was unaware of the groups and were evaluated for HSA in 11 different brain regions in cerebrospinal fluid neighborhood. A three-point scale was used for evaluation.
Results: HSA was seen in all study patients at least in one brain region. However, no significant difference was obtained between two groups in almost all brain regions (p>0.05).
Conclusions: Use of oxygen in pediatric patients undergoing cranial MRI under sevoflurane anesthesia caused a low grade HSA. However, concentration of oxygen had no significant effect on the severity of HSA.

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Article Type: Research Article

https://doi.org/10.5799/ahinjs.01.2012.04.0206

J Clin Exp Invest, 2012 - Volume 3 Issue 4, pp. 477-482

Publication date: 13 Dec 2012

Article Views: 1530

Article Downloads: 440

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