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Inicio Revista Española de Anestesiología y Reanimación (English Edition) Dislodgment of continuous suprascapular nerve block catheters after physiotherap...
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Vol. 71. Issue 4.
Pages 291-297 (April 2024)
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Vol. 71. Issue 4.
Pages 291-297 (April 2024)
Original article
Dislodgment of continuous suprascapular nerve block catheters after physiotherapy: A cadaver study
Desplazamiento de los catéteres para bloqueo continuo del nervio supraescapular tras fisioterapia: estudio en cadáveres
P. Goffina,b,
Corresponding author
pierre.goffin@chc.be

Corresponding author.
, L. Moralesc, E. Jorcanod, A. Prats-Galinoe, M.A. Reinaf,g, X. Sala-Blanche,h
a Master's Degree in Advanced Medical Competencies, Regional Anesthesia Based on Human Anatomy, University of Barcelona, Barcelona, Spain
b Department of Anesthesia, MontLegia Hospital, CHC Groupe Santé, Liège, Belgium
c Master in Advanced Medical Skills in Regional Anesthesia based in Anatomy, University of Barcelona, Barcelona, Spain
d Department of Radiology, Hospital ClÍnic, Barcelona, Spain
e Human Anatomy and Embryology, University of Barcelona, Barcelona, Spain
f CEU-San-Pablo University School of Medicine, Madrid, and Madrid-Montepríncipe University Hospital, Madrid, Spain
g Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, United States
h Department of Anesthesia, Hospital Clínic, Barcelona, Spain
Article information
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Abstract
Background

Continuous peripheral nerve blocks are commonly used for pain management. However, the incidence of catheter dislodgement or migration is unclear, and may be underestimated and underreported. Our objective was to assess suprascapular catheter tip positioning before and after routine simulated shoulder physiotherapy manipulation in an anatomical cadaver model.

Method

Eight ultrasound-guided continuous suprascapular nerve block catheters were placed in cryopreserved fresh cadavers. Computed tomography (CT) confirmed the location of the catheter tip after injection of 1 ml of contrast medium. We performed a series of standardized shoulder movements during a simulated shoulder physiotherapy session in cadavers. Following this, we administered 1 ml of methylene blue through the catheters, and then performed anatomical dissections to accurately identify the location of the catheter tips and compare them to their placement prior to the 'physiotherapy'.

Result

CT imaging confirmed the location of the catheter tips at the suprascapular notch in all cases. However, following physiotherapy, 2 catheters (25%) were found to have migrated - specifically, 1 was located in the supraspinatus muscle, and the other was located in the trapezius muscle.

Conclusion

Our findings suggest that catheter dislodgement may occur in approximately 25% of cases following simulated physiotherapy manipulation. However, further research is needed to determine the read incidence of catheter dislodgement in clinical practice.

Keywords:
Suprascapular nerve
Continuous regional blocks
Regional anesthesia complication
Tomography
Anatomy
Regional anesthesia
Physiotherapy
Resumen
Antecedentes

Los bloqueos continuos de los nervios periféricos son de uso común para el manejo del dolor. Sin embargo, la incidencia de desplazamiento o migración del catéter es dudosa, pudiendo ser infraestimada y no denunciarse. Nuestro objetivo fue evaluar el posicionamiento del extremo del catéter supraescapular antes y después de la manipulación rutinaria y simulada mediante fisioterapia de hombro en un modelo cadavérico anatómico.

Método

Se colocaron ocho catéteres para bloqueo continuo y ecoguiado del nervio supraescapular en cadáveres frescos criopreservados. La tomografía computarizada (TC) confirmó la localización de la punta del catéter tras la inyección de 1 ml de medio de contraste. Realizamos una serie de movimientos estandarizados de hombro durante una sesión simulada de fisioterapia de hombro en cadáveres. Tras ello, administramos 1 ml de azul de metileno a través de los catéteres, y seguidamente realizamos disecciones para identificar con precisión la localización de las puntas del catéter y compararlas con su localización previa a la “fisioterapia”.

Resultados

La imagen de TC confirmó la localización en todos los casos de los extremos del catéter en la muesca supraescapular. Sin embargo, tras la fisioterapia, se encontró que dos catéteres (25%) habían migrado y, en especial, uno fue localizado en el músculo supraespinoso y el otro en el músculo trapecio.

Conclusión

Nuestros hallazgos sugieren que el desplazamiento del catéter puede producirse en cerca del 25% de los casos tras la manipulación mediante fisioterapia simulada. Sin embargo, es necesaria más investigación para determinar la incidencia real de los desplazamientos del catéter en la práctica clínica.

Palabras clave:
Nervio supraescapular
Bloqueos regionales continuos
Complicación de la anestesia regional
Tomografía
Anatomía
Fisioterapia

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