Sensibilidad y Especificidad de la Onda P del Electrocardiograma en el Diagnostico del Crecimiento de Aurícula Izquierda de pacientes del Hospital Dos de Mayo durante el año 2004

Elver Leguía Valentín

Resumen


Objetivos
Determinar la sensibilidad y especificidad de la onda P en el diagnóstico del crecimiento de la aurícula izquierda en pacientes del Hospital Dos de Mayo en relación con el Ecocardiograma.
Material y Métodos
Estudio de tipo analítico, comparativo, retrospectivo, realizado en Consultorios Externos de Cardiología del Hospital Nacional Dos de Mayo, de Lima.
La muestra la constituyen 158 pacientes con EKG y Eco cardiografía, con Mediciones en MODO M, de Aurícula la Izquierda, del servicio de Cardiología del Hospital Nacional Dos de Mayo, de enero a Julio del 2004
Resultados
La sensibilidad fue de 20% y la especificidad de 83:3% el VPP 73% y el VPN 31%. La P mellada DII 0.04seg. presentó una especificidad 91%, con un VPP de 32.7% y un VPN de 37%. El voltaje de P >0.1 mV en V1, tuvo una sensibilidad 74.5% y especificidad de 66.6%, con un VPP de 83% y un VPN de 53%.
La duración de P 0.04 seg. en V1 presentó una sensibilidad 62.7% y la especificidad 33.3%, con un VPP de 62% y un VPN de 28%. La P/PR>1 en V1 tuvo una sensibilidad 29.1% y la especificidad 91.6%, con un VPP de 32.7% y un VPN de 37%.
Conclusiones
Consideramos que los criterios morfológicos de la Onda P del EKG es útil para realizar un diagnóstico de Crecimiento de Aurícula Izquierda.


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