2019, Número 4
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Med Crit 2019; 33 (4)
Concordancia del volumen telediastólico final del ventrículo izquierdo medido por monitor ultrasónico y ecocardiografía
Santana HGP, Monares ZE, Cuesta TJC, Galindo MC, Abrahamov F, Ojeda IEA
Idioma: Español
Referencias bibliográficas: 37
Paginas: 165-169
Archivo PDF: 236.88 Kb.
RESUMEN
Antecedentes: La sepsis se ha asociado a alta mortalidad y disfunción cardiaca; la ecocardiografía es técnicamente difícil; el operador dependiente requiere personal capacitado y equipo disponible, por lo que la fórmula de Smith & Madigan (SMII), a través del monitor ultrasónico de gasto cardiaco, es un sustituto adecuado del inotropismo, pudiéndose inferir el volumen telediastólico final del ventrículo izquierdo (VDFVI) como un indicador de precarga.
Métodos: En 56 pacientes diagnosticados con shock séptico, se midieron las siguientes fórmulas usando monitor ultrasónico de gasto cardiaco y comparándose con el volumen telediastólico final por ecocardiografía.
SMII = (VS × (PAM - PVC + Gp))/(7.5 × SC × TF)
VDFVI = VS × 2.7/SMII.
Resultados: Comparamos los resultados medidos por ecocardiografía y fórmula de Smith & Madigan, usando el método de Bland & Altman, obtuvimos un R2=0.92, un coeficiente de Linn de 0.92 con LC95% más alto 32.45, LC95% inferior-39.45 y una tasa de error de 32%.
Conclusión: La fórmula de Smith & Madigan podría ser útil para el cálculo de volumen telediastólico final del ventrículo izquierdo; aunque debemos determinar si esta medida es útil para tomar decisiones clínicas, ya que el porcentaje de error es mayor al 20%.
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