| Feature | Acyanotic | Cyanotic |
|---|---|---|
| Shunting of blood | L → R | R → L |
| Cyanosis | Not usual (unless congestive heart failure) | Always; blue babies |
| Surgery | Usually done in one stagetechnically simple | Usually done in several stagestechnically complex |
| Prognosis | Very good/excellent | Guarded |
| Major types |
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