Tiempo de aceleración sistólica como indicador de la gravedad hemodinámica en la enfermedad arterial periférica con calcificación de la arteria medial
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Ver abstracta en PubMed
Resumen
Este resumen es generado por máquina.El tiempo de aceleración sistólica (AT) y un nuevo parámetro, el valor de diferencia absoluta de AT (DAT), diagnostican efectivamente la enfermedad arterial periférica (EAP) incluso con calcificación de la arteria medial. Estos métodos ofrecen alternativas confiables cuando el índice tobillo-braquial (ABI) está comprometido.
Área De La Ciencia
- Medicina vascular
- Ultrasonido de diagnóstico
- Análisis de imágenes médicas
Sus Antecedentes
- El índice tobillo-braquial (ABI) es estándar para el diagnóstico de la enfermedad arterial periférica (EAP).
- La calcificación de la arteria medial (MAC) puede causar lecturas inexactas y elevadas de ABI.
- El impacto de la MAC en métodos alternativos de diagnóstico como el tiempo de aceleración sistólica (TA) no está claro.
Objetivo Del Estudio
- Evaluar el tiempo de aceleración sistólica (TA) como herramienta de diagnóstico de la EAP.
- Para determinar si la calcificación de la arteria medial (MAC) afecta las mediciones de AT.
- Introducir y validar un nuevo parámetro, el valor de diferencia absoluta de AT (DAT), para la evaluación de la DAP.
Principales Métodos
- Estudio prospectivo de 238 participantes, incluidos sujetos sanos, pacientes con MAC y pacientes con PAD (con/sin MAC).
- ABI calculado mediante la ecografía Doppler de onda continua.
- AT sistólica medida mediante ecografía dúplex codificada por colores para las arterias tibial y braquial.
- Se introdujo DAT (diferencia absoluta entre la AT crural y la AT braquial) para mitigar las influencias cardíacas.
Principales Resultados
- La calcificación de la arteria medial (MAC) no tuvo un impacto significativo en los valores del tiempo de aceleración sistólica (TA) (p > 0,05).
- Diagnóstico de la EAP mediante AT: sensibilidad del 85%, especificidad del 87% para AT > 95 ms.
- Diagnóstico de la EAP mediante DAT: sensibilidad del 82%, especificidad del 84% para DAT > 20 ms.
Conclusiones
- El tiempo de aceleración sistólica (TA) es un parámetro confiable para el diagnóstico de EAP, no afectado por la calcificación de la arteria medial (MAC).
- El nuevo valor de diferencia absoluta del parámetro AT (DAT) también cuantifica efectivamente la gravedad de la EAP en presencia de MAC.
- Tanto la AT como la DAT proporcionan alternativas valiosas y confiables a la ABI para el diagnóstico y la evaluación de la PAD cuando la ABI está comprometida por la MAC.
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