Document Detail

Accuracy of Ultrasound-Guided Superficial Trigeminal Nerve Blocks Using Methylene Blue in Cadavers.
MedLine Citation:
PMID:  23043718     Owner:  NLM     Status:  Publisher    
Objective.  To describe a technique for and assess accuracy of ultrasound-guided supraorbital, infraorbital, and mental nerve injections in a cadaveric model. Prior studies have shown that peripheral trigeminal nerve injections can be beneficial for a subgroup of patients for whom surgical treatment is not appropriate. Accurate injection is necessary to limit side effects and improve its efficacy. Ultrasound guidance may improve the accuracy of an injection that is typically performed using a blind technique. Methods.  A single operator completed 36 ultrasound-guided injections with methylene blue dye on six embalmed cadavers. Three cadavers were injected using an in-plane approach and three cadavers using an out-of-plane approach. Injections staining the target nerve were considered "accurate," whereas "inaccurate" injections resulted in no nerve staining. Results.  The accuracy rate was 100% (18 of 18) for the in-plane approach and 94% (17 of 18) for the out-of-plane approach. Thirty-five injections were considered accurate (97%) with overflow, and one injection was inaccurate. Conclusion.  This cadaveric investigation suggests that ultrasound guidance can be used to inject the peripheral trigeminal nerve with a high degree of accuracy. Clinicians should consider using ultrasound guidance to inject the trigeminal nerve for diagnostic or therapeutic purposes.
David Spinner; Jonathan S Kirschner
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-8
Journal Detail:
Title:  Pain medicine (Malden, Mass.)     Volume:  -     ISSN:  1526-4637     ISO Abbreviation:  Pain Med     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-9     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100894201     Medline TA:  Pain Med     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Wiley Periodicals, Inc.
Mount Sinai School of Medicine, New York, New York Rehabilitation Medicine Associates, New York, New York, USA.
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