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Vol. 68. Issue 4.
Pages 235-238 (April 2021)
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Vol. 68. Issue 4.
Pages 235-238 (April 2021)
Case report
Ultrasound diagnosis of a case of transient bilateral vocal cord paralysis secondary to local anesthetic infiltration
Diagnóstico ecográfico de un caso de parálisis bilateral transitoria de las cuerdas vocales secundario a infiltración de anestésico local
C. Muñoza,
Corresponding author
carlos.munoz@vhebron.net

Corresponding author.
, M. de Miguela, M.I. Rocheraa, M.D. Dordaa, E. Caubetb, O. Gonzálezb
a Servicio de Anestesiología y Reanimación, Hospital Universitari Vall d’Hebron, Barcelona, Spain
b Servicio de Cirugía General, Hospital Universitari Vall d’Hebron, Barcelona, Spain
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Abstract

One of the most important complications associated with thyroid and parathyroid surgery is vocal cord paralysis due to a recurrent laryngeal nerve injury. Recurrent laryngeal nerve injury paralysis induced by local anesthetics is a rare complication with very few published cases.

Various techniques are available for diagnosing vocal cord paralysis, including, flexible fiberoptic laryngoscopy, videostrobolaryngoscopy and indirect laryngoscopy. However, these techniques are expensive and are often associated with pain and discomfort among patients. Considering these disadvantages, transcutaneous laryngeal ultrasound is an alternative imaging tool for vocal cord examination in patients undergoing thyroid and parathyroid surgery.

We describe a case which was sonographically diagnosed a transient bilateral vocal cord paralysis after the local infiltration of 10mL of 2% mepivacaine administered for the revision of the surgical wound due to a subcutaneous hematoma that occurred after a subtotal parathyroidectomy.

Keywords:
Ultrasonography
Vocal cord paralysis
Local anesthetics
Resumen

Una de las complicaciones más importantes asociada la cirugía de tiroides y paratiroides es la parálisis de las cuerdas vocales secundaria a la lesión del nervio laríngeo recurrente. La parálisis del nervio laríngeo recurrente inducida por anestésicos locales es una rara complicación con muy pocos casos publicados.

Las técnicas patrón para el examen de las cuerdas vocales son la fibrolaringoscopia flexible y la videoestrobolaringoscopia. Sin embargo, estas técnicas son caras, y frecuentemente se asocian con dolor y malestar para los pacientes. Considerando estas desventajas, la ecografía laríngea transcutánea es una alternativa en pacientes que se someten a cirugía de tiroides y paratiroides.

Presentamos un caso en el que se diagnosticó ecográficamente una parálisis bilateral transitoria de las cuerdas vocales tras la infiltración local de 10mL de mepivacaína al 2% administrada para la revisión de la herida quirúrgica por un hematoma subcutáneo ocurrido después de una paratiroidectomía subtotal.

Palabras clave:
Ecografía
Parálisis de las cuerdas vocales
Anestésico local

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