Internet Journal of Airway Management


Volume 7 (January 2012 to December 2013)


Zadrobilek E. The Rendell-Baker-Soucek Pediatric Face Masks: Fiftieth Anniversary of the First Published Description


Development of the Anatomically Shaped Face Masks



In 1961, Rendell-Baker and Soucek began to model face masks (FMs) adapted to the anatomic features of growing pediatric patients (2, 3). The pediatric FMs available at this time had been designed merely by reducing the size of adult FMs while retaining the same proportions and inflating rims further increased the dead space of these masks, a major concern in pediatric anesthesia. They decided to study the contours of pediatric patients of different ages by means of direct facial moulds to design FMs which provide optimum fit and minimum dead space.


In selected pediatric patients, elastic impression material and a supporting layer of plaster were used  to form direct facial moulds after induction of inhalational anesthesia and tracheal intubation. From these moulds positive face castings were made. Then a thin layer of softened red wax was moulded over the nose and mouth of these face castings within the outer marked margins of contact area of future FMs to provide a breathing space and to shape of the inner surface of prototype latex FMs.      



Commercial Production and Early Experiences in Anesthetic Practice

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