Acute otitis media as well as swimmerâs ear both can lead to secondary infections of myringitis. Upper respiratory infections, for example pneumonia or flu, can dispose an individual to ear infections. The symptoms and signs include: 1  Drainage from the ear. 2  Hearing impairment.
Spinal Fusion. Spinal fusion is a surgical procedure used to correct problems with the small bones of the spine (vertebrae). It is essentially a welding process. The basic idea is to fuse together the painful vertebrae so that they heal into a single, solid bone.ll spinal fusions use some type of bone material, called a bone graft, to help promote the fusion. Generally, small pieces of bone are placed into the space between the vertebrae to be fused. A bone graft is primarily used to stimulate bone healing.
perfusion. 1. the act of pouring through or over; especially the passage of a fluid through the vessels of a specific organ. 2. a liquid poured through or over an organ or tissue. perfusion pressure. the gradient between arterial blood pressure and venous pressure in a comparable location in the vascular tree.pulmonary perfusion.erfusion. 1. the act of pouring through or over; especially the passage of a fluid through the vessels of a specific organ. 2. a liquid poured through or over an organ or tissue. tissue perfusion the circulation of blood through the vascular bed of tissue.