- Unidades + desafio
- 5 + 1
- Quadros inspirados em Feynman
- 15
- Figuras do capítulo
- 21 · completas
- Prática comentada
- 45 questões
Três ferramentas — entenda fluxo e ondas
Estime vazão, explore o erro do diâmetro e descreva estágios do roubo. Demonstrações didáticas sem diagnóstico automático.
40 flashcards — relembre e explique
Oito cartões por unidade: mecanismos, aquisição, interpretação e limites.
Simulado — 45 questões comentadas
Cinco questões por unidade e vinte integradoras. Correção ao final no modo prova; tesouras e limpeza individual disponíveis.
Tabelas de consulta — duas tabelas do livro e três sínteses
Tabelas 9.1 e 9.2 traduzidas. As sínteses autorais organizam localização pela onda, estágios do roubo e laudo.
Fonte, notas de fidelidade e bibliografia
Polak JF. Ultrasound Assessment of the Vertebral Arteries. In: Introduction to Vascular Ultrasonography. 7ª ed. Elsevier; 2019. Capítulo 9, págs. 183–202.
As 21 Figuras 9.1–9.21 foram preservadas em seus painéis e medidas, com faixa e legendas explicativas em português e acesso ao original. As Tabelas 9.1 e 9.2 foram traduzidas; três sínteses, quadros, questões e cartões são didáticos e autorais.
Notas de fidelidade e diferenças entre as fontes
A Tabela 9.1 lista manifestações inespecíficas; não equivale a critério diagnóstico. A Tabela 9.2 apresenta médias de estudos diferentes, não limiares universais. Suas referências 49 e 50 constam na última página da bibliografia impressa, página 202 do livro. Recomendações ESC 2024 e ESVS 2023 aparecem separadas do texto de 2019. Os quadros de analogia são autorais, não falas atribuídas a Feynman.
Ver as 50 referências do capítulo original
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Sumário e recomendações: vertebrais e roubo subclávio
Comece em V2 e siga até a origem possível. Confirme vaso, lado, segmento, direção, subida sistólica e diástole. A origem pode estar oculta por clavícula e tortuosidade; o lado esquerdo pode nascer da aorta. Compare dominância e fluxo contralateral antes de interpretar VPS isolada.
Localize pela onda. Jato focal e tardus-parvus distal sugerem lesão proximal. Alta resistência também pode ocorrer em vaso pequeno ou término na PICA. Ausência de fluxo só apoia oclusão se o vaso foi bem identificado e examinado com ajustes sensíveis. Dissecção e compressão extrínseca pedem correlação anatômica.
Descreva a fase do roubo. Entalhe mesossistólico → bidireção → reversão completa é a sequência ilustrada pelas Figuras 9.18–9.21. Fenômeno de roubo é hemodinâmico; síndrome depende de sintomas atribuíveis. Confira subclávia, pressão dos braços e, à direita, possível participação da inominada.
Complementos de diretrizes atuais
A ESC 2024 destaca terapia clínica para doença arterial sintomática de membro superior, avaliação do fluxo vertebral e consideração de revascularização em situações clínicas selecionadas, como isquemia vertebrobasilar sintomática, roubo coronário com mamária interna e problemas de acesso de hemodiálise. A ESVS 2023 diferencia doença vertebral sintomática e assintomática e recomenda avaliação clínica e anatômica antes de intervenção. A onda isolada não determina indicação.
Consulta clínica complementar
Consulte diretrizes completas e a versão institucional atual do UpToDate — síndrome de roubo subclávio conforme disponibilidade. O conteúdo proprietário não foi reproduzido.