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In my experience as an otolaryngologist, it has always been a challenge to obtain perfect exposure of the interior of the larynx in order to do precision surgery on the vocal cords. Many times I would blame inadequate anesthesia, poorly relaxed patient, or a peculiar anatomical configuration of the patient's neck, etc., which contributed to my difficulties. When Dr. Sam Roberts of Kansas City introduced his self-retaining laryngoscope, I
Submitted for publication June 3, 1958. From the Department of Otolaryngology, Mount Sinai Hospital of Chicago. immediately made use of this instrument, and, although it was an improvement, it still required external mechanical aids, and the scope itself was quite large and not always suitable in each case. Subsequently Dr. Albert Andrews perfected the chest arm attachment so that one could use it with a set of Jackson laryngoscopes. I purchased this attachment and used it on a number of cases
PROHOVNIK J. A Simplified Technique for Direct Laryngoscopy in Adults. AMA Arch Otolaryngol. 1959;69(4):465–466. doi:10.1001/archotol.1959.00730030475017
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