A probate court (surrogate court) decides the legal validity of a testator 's (person's) will and grants its approval, also known as granting probate, to the executor.
The haemodynamic molding theory suggests that a reduction in foetal blood flow causes hypoplasia and coarctation of the aortic arch. Twenty-five to 50% of infants diagnosed with coarctation have hypoplasia of the arch without haemodynamically significant narrowing and/or pressure gradient across the narrowed segment.ue to similarities in the clinical and imaging features of hypoplastic aortic arch and pseudocoarctation of aorta, they may be mistaken for true coarctation leading to unnecessary investigations.
Causes of aortic valve disease include: 1  Congenital conditions: Conditions present at birth can cause aortic valve failure. 2  Infection: Certain infections may weaken the aortic valve. 3  Aortic valve calcification: As you age, your heart may accumulate deposits of calcium, normally found in the blood.