Jornal Vascular Brasileiro
https://jvascbras.org/article/doi/10.1590/1677-5449.202401111
Jornal Vascular Brasileiro
Original Article

Avaliação anatômica da altura da bifurcação carotídea com ultrassonografia vascular portátil por alunos de medicina do quarto ano

Anatomic evaluation of the height of the carotid bifurcation by 4th year medical students using vascular ultrasonography

Mateus Rodrigues Alessi; Murillo Campigotto Fedatto; Marcos Correa Segalla; Camila do Valle Pavanelo; Rodrigo Barberato; Gessil Dgeovani Carlotto Neto; Graciliano José França

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Resumo

Contexto: A bifurcação carotídea é um local conhecido por variações anatômicas, cujas estruturas podem ser avaliadas por exames de ultrassom. O conhecimento da anatomia não usual é crucial em procedimentos cirúrgicos, influenciando diretamente seus resultados.

Objetivos: Avaliar se estudantes de Medicina do quarto ano, previamente treinados, são capazes de realizar exames ultrassonográficos comparando a altura da bifurcação carotídea entre homens e mulheres.

Métodos: No total, 602 bifurcações carotídeas de 301 participantes foram identificadas por ultrassom pelos alunos, após treinamento prévio por um profissional habilitado em ecografia vascular. Após cada exame, os resultados foram verificados por um médico especialista. Comparou-se sexo, idade e medida bilateral da distância entre a bifurcação carotídea e o lóbulo da orelha.

Resultados: Apenas oito exames diferiram em mais de 0,2 cm entre a medida dos alunos e do médico especialista. À direita, a altura média da bifurcação carotídea em relação ao lóbulo da orelha foi de 5,9 cm, e à esquerda, 5,8 cm. A distância à direita foi significativamente menor em mulheres, com média de 5,6 cm, enquanto nos homens, a média foi de 6,3 cm (p < 0,0001). A distância à esquerda também foi menor em mulheres, com média de 5,4 cm, enquanto em homens foi de 6,2 cm (p < 0,0001). As diferenças entre os lados não foram estatisticamente significativas entre os sexos.

Conclusões: Após treinamento, estudantes de Medicina demonstraram precisão elevada na técnica de medida da altura da bifurcação carotídea por ecografia vascular. Homens apresentaram tendência a bifurcações mais distantes do lobo da orelha em comparação às mulheres.

Palavras-chave

artérias carótidas; variação anatômica; ultrassonografia das artérias carótidas; estudantes de medicina; ensino

Abstract

Background: The carotid bifurcation is known for its anatomical variations, involving structures that can be assessed by ultrasound examination. Knowledge of unusual anatomy is crucial in surgical procedures, directly influencing their outcomes.

Objectives: To assess whether fourth-year medical students with prior training are capable of performing ultrasound examinations to compare the height of the carotid bifurcation between men and women.

Methods: 602 carotid bifurcations from 301 participants were identified by ultrasound examinations conducted by medical students after prior training by a professional qualified in vascular ultrasound. After each examination, the results were verified by a specialist physician. Gender, age, and bilateral measurement of the distance between the carotid bifurcation and the ear lobe were compared.

Results: The students’ measurements differed from the specialist physician’s measurements by more than 0.2 cm in just 8 examinations. On the right side, the average height of the carotid bifurcation relative to the earlobe was 5.9 cm, compared to 5.8 cm on the left side, for the whole sample. The distance on the right side was significantly shorter among the women, with an average of 5.6 cm, compared to 6.3 cm among the men (p<0.0001). The distance on the left side was also significantly shorter in women, with an average of 5.4 cm, compared to 6.2 cm among the men (p<0.0001). The difference between sides was not statistically significant between the sexes.

Conclusions: After training, medical students demonstrate high accuracy in the technique of measuring the carotid bifurcation height using vascular ultrasound. Men showed a tendency for the bifurcations to be located farther from the earlobe compared to women.

Keywords

carotid arteries; anatomic variation; carotid artery ultrasound; students medical; teaching

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Submitted date:
08/13/2024

Accepted date:
01/22/2025

Sociedade Brasileira de Angiologia e Cirurgia Vascular (SBACV)"> Sociedade Brasileira de Angiologia e Cirurgia Vascular (SBACV)">
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