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Determinación no invasiva por Doppler del rendimiento cardíaco en el hombre. Validación clínica de las pruebas
Circulation
|March 1, 1983
Resumen
Una nueva técnica de ultrasonido no invasivo mide con precisión el rendimiento cardíaco (CO) en pacientes de cuidados intensivos. Este método muestra una fuerte correlación con la termodilución tradicional, ofreciendo una herramienta prometedora para el monitoreo continuo de CO.
Área de la Ciencia:
- Fisiología cardiovascular fisiología cardiovascular.
- Imágenes médicas de imágenes médicas.
- Medicina de cuidados críticos Medicina de cuidados críticos.
Sus antecedentes:
- La evaluación del rendimiento cardíaco (CO) es crucial en cuidados intensivos.
- Los métodos actuales como la termodilución pueden ser invasivos.
- Existe la necesidad de un monitoreo de CO no invasivo y confiable.
Objetivo del estudio:
- Evaluar una nueva técnica de ultrasonido no invasivo para la medición del rendimiento cardíaco.
- Para comparar el CO derivado del ultrasonido con el rendimiento cardíaco de termodilución (TDCO).
Principales métodos:
- El ultrasonido pulsado midió el diámetro aórtico; el Doppler de onda continua midió la velocidad de la sangre aórtica.
- Estudio inicial: Índice de Doppler de salida (DI) frente a TDCO.
- Segundo estudio: Cálculo de salida cardíaca ultrasónica (UCO) utilizando velocidad y diámetro frente a TDCO.
Principales resultados:
- Los cambios en el DI se correlacionaron bien con el TDCO (r=0,83).
- UCO mostró una alta correlación con TDCO (r=0.94) en un rango de 2-11 L/min.
- Las mediciones exitosas se lograron en el 90% y el 85% de los pacientes en los estudios respectivos.
Conclusiones:
- La ecografía no invasiva proporciona una evaluación precisa de la salida cardíaca en la mayoría de los pacientes de UCI.
- La técnica es adecuada para el monitoreo extendido de CO en cuidados agudos.
- Las aplicaciones potenciales incluyen la evaluación de CO durante las intervenciones diagnósticas y terapéuticas.
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