L To R Shunt Flashcards

1
Q

VSD

A

May remain asymptomatic

Large: LV overload / HF

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2
Q

ASD

A
Wide and fixed S2 splitting 
Symptom: none to HF
Missing septal tissue (foramen ovale: unfused septal tissue) 
Lead to paradoxical amboli
Associated with Down syndrome
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3
Q

PDA

A
Progressive RVH/ LVH/HF
Continious machine like murmur
Patency is maintained by PGE and low O2
End by indomethacin
Differential cyanosis : lower extremities
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4
Q

Eisenmenger

A

Uncorrected shut vsd asd pda
Pulmonary arterial HTN

To compensate: RVH: shunt becomes r to l
Late cyanosis : clubbing and polycythemia

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