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Un patrón nuevo y modificado de infarto de miocardio por oclusión del norte

Honglin Ni1, Xiao Wan1, Ting Shi1

  • 1Department of Electrocardiology, Affiliated Hospital of Jiaxing University, Jiaxing 314001, China.

Journal of electrocardiology
|February 20, 2026
PubMed
Resumen

La identificación del infarto de miocardio oclusivo (OMI) atípico es difícil. Este estudio sugiere criterios de ECG modificados para OMI del norte, utilizando elevación del segmento ST en aVR/aVL con depresión recíproca en II, III y aVF.

Palabras clave:
Hemorragia cerebral agudaEnfermedad de la arteria coronaria izquierdaEnfermedad multivasoInfarto de miocardio oclusivoElevación del segmento ST en las derivaciones aVR y aVL

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Área de la Ciencia:

  • Cardiología
  • Diagnóstico Médico
  • Electrocardiografía

Sus antecedentes:

  • El infarto de miocardio oclusivo (OMI) atípico presenta desafíos diagnósticos en la práctica clínica.
  • La OMI oclusiva del norte (Northern OMI) propuesta recientemente requiere una mayor definición.
  • Los hallazgos del electrocardiograma (ECG) son cruciales para diagnosticar el infarto de miocardio.

Objetivo del estudio:

  • Analizar las posibles manifestaciones de ECG de la OMI del norte en el síndrome coronario agudo (SCA).
  • Investigar los tipos de vasos coronarios asociados en la OMI del norte.
  • Proponer criterios diagnósticos modificados para la OMI del norte.

Principales métodos:

  • Análisis retrospectivo de 9 pacientes con elevación del segmento ST (STE) en las derivaciones aVR y aVL.
  • Exclusión de pacientes con criterios de ECG típicos de infarto de miocardio oclusivo con elevación del segmento ST (STE-OMI).
  • Angiografía coronaria para identificar lesiones culpables de la arteria coronaria.

Principales resultados:

  • Ocho de nueve pacientes fueron diagnosticados con OMI, involucrando lesiones de uno o múltiples vasos.
  • Siete pacientes recibieron intervención coronaria oportuna; uno optó por tratamiento conservador.
  • Un caso se atribuyó a hemorragia aguda del tronco encefálico.

Conclusiones:

  • Los modelos de diagnóstico actuales para la OMI del norte pueden ser limitados.
  • Criterios modificados propuestos: STE en aVR y aVL con depresión del segmento ST (STD) recíproca en las derivaciones II, III y aVF.
  • Estos hallazgos pueden mejorar la identificación de OMI atípico.