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ISSN 2448-8909 (Impreso)

1998, Número 2

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Med Crit 1998; 12 (2)


Comparación de dos fórmulas para calcular el gasto cardiaco contra el método de termodilución

Sánchez VLD

Idioma: Español
Referencias bibliográficas: 30
Paginas: 54-60
Archivo PDF: 160.87 Kb.


RESUMEN

Objetivo: Comparar los resultados de las mediciones del gasto cardiaco obtenidas por termodilución (TDB) con dos ecuaciones.
Diseño: Estudio observacional de serie de casos.
Sitio: Dos UCIs de la Ciudad de México.
Pacientes: Cincuenta y cuatro pacientes (edad media 58.7 ± 21.5 años) que requerían monitoreo hemodinámico. Los diagnósticos fueron: shock (n = 20), SIRPA (n = 10), edema agudo pulmonar (n = 7), sepsis (n = 5), pancreatitis (n = 3) y otros (n = 9).
Intervenciones: Se determinó el gasto cardiaco por TDB, tres veces en cada paciente y simultáneamente se estimó mediante dos ecuaciones: 1) f1GC = GC = ([D(a-v)]O2 x 100)/ [CaO2/ [D(a-v)O2]) y 2) (f2GC) = GC = (SC x 140)/C(a-v)O2, donde: GC = gasto cardiaco estimado, D(a-v)O2 = diferencia arteriovenosa de oxígeno, CaO2 = contenido arterial de oxígeno, SC = superficie corporal y 140 = constante.
Mediciones y resultados principales: Se hicieron 540 mediciones en todos los pacientes. El día/estancia fue de 13.1 ± 12.4 días y la calificación de APACHE II fue de 19.6 ± 8.1. El coeficiente de correlación fue de (0.15) TDB-1fCO y 0.33 (TDB-f1CO). La media de las diferencias (bias) fue 0.001 (TDB-f1CO) y -1.4 (TDB-f2CO).


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