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B

Balloon dilation Dilatation of a structure (vessel narrowing) using a balloon catheter
Balloon catheter Thin tube-like instrument that can be used to inflate a balloon at the tip. Used, for example, in cardiac catheterisation to dilate constricted blood vessels.
Bicuspid aortic valve Congenital malformation of the aortic valve, in which only 2 valve pockets are formed (normal:three)
Blalock-Taussig Shunt (BT-Shunt) Surgically created connection between an artery leaving the aorta and the pulmonary artery
Bradycardia Heart rate too low for age