Relationship of vocal cord paralysis to the coil diameter of vagus nerve stimulator leads.

J Neurosurg. 2015 Mar;122(3):532-5. doi: 10.3171/2014.10.JNS14640. Epub 2014 Dec 19.

Relationship of vocal cord paralysis to the coil diameter of vagus nerve stimulator leads.

Robinson LC1, Winston KR.

Author information
  • 1Department of Neurosurgery, University of Colorado School of Medicine, Aurora;
Abstract
OBJECT:

This investigation was done to examine, following implantation of vagus nerve stimulators, the relationship of vocal cord paralysis to the inner diameter of the coils used to attach the stimulator lead to the nerve.

METHODS:

All data in this investigation were collected, as mandated by the FDA, by the manufacturer of vagus nerve stimulators and were made available without restrictions for analysis by the authors. The data reflect all initial device implantations in the United States for the period from 1997 through 2012.

RESULTS:

Vocal cord paralysis was reported in 193 of 51,882 implantations. In patients aged 18 years and older, the incidence of paralysis was 0.26% when the stimulator leads had coil diameters of 3 mm and 0.51% when the leads had 2-mm-diameter coils (p < 0.05). Across all age groups, the incidence of vocal cord paralysis increased with age at implantation for leads having 2-mm-diameter coils.

CONCLUSIONS:

In patients aged 18 years and older, vocal cord paralysis occurred at almost twice the rate with the implantation of vagus nerve stimulator leads having 2-mm-diameter coils than with leads having 3-mm-diameter coils. The incidence of vocal cord paralysis increases with patient age at implantation.

KEYWORDS:

VNS = vagus nerve stimulation; complications; epilepsy; vagus nerve injury; vagus nerve stimulator lead; vocal cord paralysis

PMID:

25526267

[PubMed – indexed for MEDLINE]

http://www.ncbi.nlm.nih.gov/pubmed/25526267

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About vnstherapy

I'm a very, very long-time support person and health care and mental health advocate/activist for my spouse Joyce as well as to others. I'm also a retired business executive and former Board Member, President and facilitator of a local chapter of DBSA as well as a Florida State appointment as a Guardian Advocate. I do not endorse, promote or advertise for any therapy, product or company. I do share our personal experiences, my research and knowledge in the hope it might benefit someone or do I give advice as to what one should or shouldn't do. I extend my best wishes for wellness to one and all and all the good you’d wish for yourselves.
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