Study of Some “Intrinsic Risk Factors” that Can Enhance an Iatrogenic Injury of the External Branch of the Superior Laryngeal Nerve

Furlan, Julio C.; Cordeiro, Anói Castro; Brandão, Lenine Garcia

doi:10.1067/mhn.2003.11

Cited by 36 publications

(38 citation statements)

References 14 publications

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“…Furlan, Cordeiro & Brandão (2003) found a statistically significant difference in height when related with intrinsic risk factors for injury to the eBSLn during thyroidectomy; these authors noted that the eBSLn is further from the superior pole of the thyroid gland in higher subjects. Thus, the eBSLn should be further from the most caudal point of the thyroid cartilage, as seen in our study.…”

Section: Discussionmentioning

confidence: 98%

“…We also found that the eBSLn runs parallel, deep and posterior to the superior thyroid artery; the eBSLn may, however, run parallel or cross this artery, and variations may be present between the right and left side of the same subject. Furlan, Cordeiro & Brandão 15 have stated that this measurement may be shorter when the thyroid gland is larger -in this case, the eBSLn tends to be closer to the thyroid.…”

Section: Discussionmentioning

confidence: 99%

“…Furlan, Cordeiro & Brandão, 15 based on the anatomical relationship between the eBSLn and the thyroid gland, found no statistically significant difference among ethnic groups in a study on intrinsic risk factors for surgical injury to this nerve.…”

Section: Discussionmentioning

confidence: 99%

“…We found concerns in the literature about the importance of detailed anatomical mapping as a basis for surgical planning of the thyroid gland and cervical structures close to the eBSLn, the superior thyroid artery, and the superior pole of the thyroid gland. 2,4,7,12,13,[15][16][17]20 Cernea 2 also added that the only effective method for avoiding iatrogenic injury to the eBSLn during thyroidectomy is to systematically and objectively search for this nerve around the superior pole of the thyroid gland by using a neurostimulator.…”

Section: Discussionmentioning

confidence: 99%

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Anatomic relation between the external branch of the superior laryngeal nerve and the thyroid gland

Estrela¹,

Leão²,

Jotz³

2011

Braz. j. otorhinolaryngol. (Impr.)

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Aim: This prospective study investigated the anatomic relations between the external branch of the superior laryngeal nerve (eBSLn), the superior thyroid artery (STA) and the thyroid gland in human cadavers. Material and Methods:Twenty-two human cadavers aged over 18 years old, less than 24 hours after death. Results:The mean distance between the eBSLn and the superior pole of the thyroid gland was 7.68 ±3.07 mm. A tangent to the inferior edge of the thyroid cartilage between the eBSLn and the STA measured 4.24 ±2.67 mm. A line from the intersection of the eBSLn -related to the STA -to the superior pole of the thyroid gland measured 9.53 ±4.65 mm. A line from the eBSLn to the midline of the most caudal point of the thyroid cartilage measured 19.70 ±2.82 mm. A line from the renLS to the midline on the most cranial point of the cricoid cartilage was 18.35 ±3.66 mm. Conclusion:There is a variable proximity relation between the eBSLn and the superior pole of the thyroid gland; this distance ranges from 3.25 to 15.75 mm. There was no evidence of significant variation between the measures in the ethnic groups comprising the sample. Braz J Otorhinolaryngol. 2011;77(2):249-58. ORIgInAL ARTIcLE BJORL

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Anatomic relation between the external branch of the superior laryngeal nerve and the thyroid gland

Estrela¹,

Leão²,

Jotz³

2011

Braz. j. otorhinolaryngol. (Impr.)

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“…Furlan et al (43) carried out 72 cadaveric dissections and found significant differences between the three groups of the Cernea's classification regarding individual high and thyroid volume. The authors advocate that the taller the subject, the further the EBSLN is from the superior pole of the thyroid.…”

Section: Risk Factors For Surgical Injury Of the Ebslnmentioning

confidence: 99%

Injury of the external branch of the superior laryngeal nerve in thyroid surgery

Potenza¹,

Filho²,

Cernea³

2017

Gland Surg.

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Surgical anatomy of the external branch of the superior laryngeal nerve and its clinical significance in head and neck surgery

et al. 2008

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Injury of the external branch of the superior laryngeal nerve (EBSLN) increases the morbidity following a variety of neck procedures and can have catastrophic consequences in people who use their voice professionally. Identification and preservation of the EBSLN are thus important in thyroidectomy, parathyroidectomy, carotid endarterectomy, and anterior cervical spine procedures, where the nerve is at risk. There are large variations in the anatomical course of the EBSLN, which makes the intraoperative identification of the nerve challenging. The topographic relationship of the EBSLN to the superior thyroid artery and the upper pole of the thyroid gland are considered by many authors to be the key point for identifying the nerve during surgery of the neck. The classifications by Cernea et al. ([1992a] Head Neck 14:380-383; [1992b] Am. J. Surg. 164:634-639) and by Kierner et al. ([1998] Arch. Otolaryngol. Head Neck Surg. 124:301-303), as well as clinically important connections are discussed in detail. Along with sound anatomical knowledge, neuromonitoring is helpful in identifying the EBSLN during neck procedures. The clinical signs of EBSLN injury include hoarseness, decreased voice projection, decreased pitch range, and fatigue after extensive voice use. Videostroboscopy, electromyography, voice analysis, and electroglottography can provide crucial information on the function of the EBSLN following neck surgery.

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Study of Some “Intrinsic Risk Factors” that Can Enhance an Iatrogenic Injury of the External Branch of the Superior Laryngeal Nerve

Abstract: Surgeons should be aware of these anatomic findings in order to obtain a good voice-related outcome in the thyroidectomies.

Cited by 36 publications

References 14 publications

Anatomic relation between the external branch of the superior laryngeal nerve and the thyroid gland

Anatomic relation between the external branch of the superior laryngeal nerve and the thyroid gland

Injury of the external branch of the superior laryngeal nerve in thyroid surgery

Surgical anatomy of the external branch of the superior laryngeal nerve and its clinical significance in head and neck surgery

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