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A posterior urethral valve is an obstructing membrane in the posterior male urethra as a result of abnormal in utero development. It is the most common cause of bladder outlet obstruction in male newborns. The disorder varies in degree, with mild cases presenting late due to milder symptoms. More severe cases can have renal and respiratory ...
Frequency. 2% of people over 65 (developed world) [ 1] Aortic stenosis ( AS or AoS) is the narrowing of the exit of the left ventricle of the heart (where the aorta begins), such that problems result. [ 1] It may occur at the aortic valve as well as above and below this level. [ 1] It typically gets worse over time. [ 1]
Treatment. Aortic valve replacement. A quadricuspid aortic valve (QAV) is a rare congenital heart defect characterized by the presence of four cusps, instead of the usual three found normally in the aortic valve. [ 1] It is a defect that occurs during embryological development of the aortic trunk during gestation. [ 2]
Heyde's syndrome is a syndrome of gastrointestinal bleeding from angiodysplasia in the presence of aortic stenosis. [ 1][ 2] It is named after Edward C. Heyde, MD, who first noted the association in 1958. [ 3] It is caused by cleavage of Von Willebrand factor (vWF) due to high shear stress forces from aortic valvular stenosis.
Aortic valve replacement. ICD-9-CM. 35.21 - 35.22 V43.3. [ edit on Wikidata] Aortic valve replacement is a cardiac surgery procedure whereby a failing aortic valve is replaced with an artificial heart valve. The aortic valve may need to be replaced because of aortic regurgitation (back flow), or if the valve is narrowed by stenosis .
According to the Mayo Clinic, a Bartholin's cyst forms when the glands become obstructed and cause fluid to back up into the gland. A small, noninfected cyst may go unnoticed — however, if the ...
As reported by Dispenzieri et al. [4] Mayo Clinic treatment regimens are tailored to treat the clinical manifestations and prognosis for the rate of progression of the POEMS syndrome in each patient. In rare cases, patients may have minimal or no symptoms at presentation or after successful treatment of their disorder.
Moyamoya disease is a disease in which certain arteries in the brain are constricted. Blood flow is blocked by constriction and blood clots ( thrombosis ). [ 2] A collateral circulation develops around the blocked vessels to compensate for the blockage, but the collateral vessels are small, weak, and prone to bleeding, aneurysm and thrombosis.