IAM Flashcards

1
Q

ISQUEMIA POR BAJO FLUJO

A

90% por ateroesclerosis, el resto x vasoespasmo x frio o drogas y trombos

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2
Q

ISQUEMIA POR ALTO CONSUMO E O2

A

en hipertrofia del musculo cardiaco, taquicardia o ejercicio

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3
Q

IAM TANSMURAL

A

transmural por placa inestable, aumenta el peligro con el tabaco, el ejercicio y las catecolaminas CID+, asociado a proteina c reactiva, hipercoagubilidad por factor V leiden

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4
Q

ARTERIAS MAS DAÑADAS IAM

A
    • coronaria descendente izquierda
    • circunfleja
    • coonaria derecha
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5
Q

EVOLUCION IAM TRANSMURAL

A

erosion luego ulcera de placa luego fisura y hemorragia con trombo suelto.

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6
Q

IAM SUBENDOCARDICO

A

mismas arterias dañadas, por placa estable, lesiones multifocales.

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7
Q

IAM MICRO

A
6-12 hrs no se ve nada excepto con TTC
18-24 hrs zonas palidas con bordes rojos
1 semana lesiones amarillenta y blandas
10 dias granulacion 
6 semanas cicatriz fibrosa
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8
Q

ISQUEMIA MICRO REVERSIBLE

A

menos de 40 minutos (al aumentar el tiempo, aumenta el lactato y disminuye atp)
mitocondrias tumefactas
inicia respiracion anaerobia
acidosis
consumo de glucogeno
miofibrilla relajada (aturdida o hibernando)

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9
Q

ISQUEMIA MICRO IRREVERSIBLE

A

edema de miocitos, fibrillas onduladas
12-72 hrs miositos, eosinofilos, picnosis, necrosis coagulativa, neutrofilia
3-7 dias macrofagos, granulacion y fibrosis

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