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At the American Laryngological Association meeting in Palm Beach, Fla, Dr Michael Friedman and colleagues, Chicago, reported a new treatment for spastic dysphonia. The technique consists of implanting a small electrical stimulating device subcutaneously. In the single patient described, the result was good, and voice improvement was optimized through electrical stimulation of the recurrent laryngeal nerve at 2 mA and 25 Hz.
The preoperative patient selection process includes percutaneous stimulation of the recurrent nerve to determine efficacy. The authors stressed the experimental nature of the procedure. Evidence from a canine model, as well as the case report, indicated no adverse cardiorespiratory effects secondary to electrical stimulation of the recurrent nerve.
KOUFMAN JA. Implantation of a Recurrent Nerve Stimulator for the Treatment of Spastic Dysphonia. Arch Otolaryngol Head Neck Surg. 1988;114(11):1228. doi:https://doi.org/10.1001/archotol.1988.01860230022005
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