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.
1 Exactly how atherosclerosis leads to abdominal aortic aneurysms is unclear. 2  It is thought that atherosclerosis causes changes in the lining of the artery wall that may affect oxygen and nutrient flow to the aortic wall tissues. 3  The resulting tissue damage and breakdown may lead to the development of an aneurysm.