Hepatitis can be caused by: 1  Immune cells in the body attacking the liver. 2  Infections from viruses (such as hepatitis A, hepatitis B, or hepatitis C), bacteria, or parasites.  Liver damage from alcohol or poison.
Mitral valve annuloplasty is a surgical technique for the repair of leaking mitral valves. Due to various factors, the two leaflets normally involved in sealing the mitral valve to retrograde flow may not coapt properly.he goal of mitral valve annuloplasty is to regain mitral valve competence by restoring the physiological form and function of the normal mitral valve apparatus.
1 The annular tear is a tearing of the disc external surface that may occur with the aging process or with injury. 2  The annulus may thin or bulge or weaken to the point that disc material may extrude into the spinal canal.umbar Annular Tear. 1  A lumbar annular tear occurs usually with a disc herniation. 2  The annular tear is a tearing of the disc external surface that may occur with the aging process or with injury.