There are many types and causes of head injury, but, by far, the most common are concussions related to motor vehicle accidents and contact sports. Concussion comes from the Latin âConcutereâ, which means to shake violently.
Noun. 1. pyelonephritis-inflammation of the kidney and its pelvis caused by bacterial infection. urinary tract infection-any infection of any of the organs of the urinary tract. acute pyelonephritis-pyelonephritis resulting from the spread of a bladder infection.
Chronic kidney disease is a possible complication of acute pyelonephritis. And if the infection continues to recur, the kidneys may be permanently damaged. Although rare, it is possible for the infection to enter the blood stream, resulting in a potentially deadly bloodstream infection called sepsis.rom the bladder, the bacteria travel up through the ureters to the kidneys. Bacteria, such as Escherichia coli, commonly known as E. coli, often cause the infection. But any serious infection in the blood stream can spread to the kidneys and cause acute pyelonephritis.