Our object in this paper is to bring together the more important observations that have accumulated in the literature on the sphenopalatine ganglion during the past twenty-five years and the more important observations that have been made during eight years of original work on this subject. The original work includes more than 2,000 cases and more than 10,000 instances, counting multiples and repetitions, of remote dysfunctions1 being arrested by anesthetizing the sphenopalatine ganglions. This should provide a working guide that will bring the student of the subject to the front lines of advance without unnecessary delay.
Anesthetization of the sphenopalatine ganglions and the injection of alcohol into them have one feature in common: They render the ganglions impervious to the passage of nerve currents. An injection may be considered the equivalent of an anesthetization lasting several months instead of several hours, and so the associate phenomena need not be discussed
BYRD H, BYRD W. SPHENOPALATINE PHENOMENA: PRESENT STATUS OF KNOWLEDGE. Arch Intern Med (Chic). 1930;46(6):1026–1038. doi:10.1001/archinte.1930.00140180127013
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