Tehran University Medical Journal

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Airway management is one of the most important subjects in medicine. This article reviews the history, assessment of airway prior to anesthesia, techniques and equip-ment of airway management and management of patients with anticipated and unan-ticipated difficult airways. This article covers recent literature on airway appliances and devices and their use in different circumstances. Airway assessment methods especially the recent Iranian method have been reviewed and discussed briefly in this article. On the whole the article covers the etiology of difficult airway and offers guidelines for safe practice of anesthesia in patients in whom airway is anticipated to be difficult.

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Background: There are many methods for removal of tracheobronchial foreign bodies but there are many situations where removal of a foreign body seems impossible and may require a major surgical procedure. Familiarity with each method improves physician decision making.
Case: A 17 months old baby with a history of foreign body aspiration suffered from long term pneumonia. There was a round shape foreign body in bronchoscopic view that could not be removed with standard methods, but was removed by application of Fogarty catheter Conclusion: Removal of round, spherical foreign bodies may be performed by Fogarty Catheter preventing surgical intervention.

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Background: Premedication is widely used in pediatric anesthesia to reduce emotional trauma and ensure smooth induction. The rectal route is one of the most commonly accepted means of drug administration. The aim of our study was to investigate and compare the efficacy of rectally administered midazolam versus that of ketamine as a premedication in pediatric patients.

Methods: We performed a prospective randomized double-blinded clinical trial in 64 children, 1 to 10 years of age, randomly allocated into two groups. The midazolam group received 0.5 mg/kg rectal midazolam and the ketamine group received 5 mg/kg rectal ketamine. The preoperative sedation scores were evaluated on a three-point scale. The anxiolysis and mask acceptance scores were evaluated separately on a four-point scale, with ease of parental separation, based on the presence or lack of crying, evaluated on a two-point scale.

Results: Neither medication showed acceptable sedation (>75%), with no significant difference in sedation score between the two groups (P=0.725). Anxiolysis and mask acceptance using either midazolam or ketamine were acceptable, with  midazolam performing significantly better than ketamine (P=0.00 and P=0.042, respectively). Ease of parental separation was seen in both groups without significant difference (P=0.288) and no major adverse effects, such as apnea, occurred in either group.

Conclusions: Rectal midazolam is more effective than ketamine in anxiolysis and mask acceptance. Although they both can ease separation anxiety in children before surgery, we found neither drug to be acceptable for sedation.