Balloon Atrial Septostomy
Performed in newborns with transposition of the great arteries.
Contraindications: (1) thrombus in left atrial appendage; (2) moderate mitral regurgitation; (3) severe aortic or tricuspid valve disease.
Familial form of mitral valve prolapse.
Ascending aorta and aortic valve replacement with a valved conduit and reimplantation of the coronary arteries used to treat combined aortic valve and ascending aorta disease.
Gradient (mmHg) = 4 V2.
Simplified Bernoulli formula to calculate the pressure gradient from peak velocity. V: peak velocity (m/s).
Beta receptor antagonist.
Helpful in HR reduction.
Optimal administration should start 2–3 days before examination.
They are also effective if administered the same day (maximum HR reduction around 10 bpm).
Contraindications: asthma, second- or third-degree hearth block, bradycardia.
The effect of ionizing radiation...