Updated February 24, 2017. The mean or average birth weight in the United States is about 3,389g or 7 lb, 7.5 oz. However, any birth weight of a term newborn between 5 lbs, 8 oz and 8 lbs, 13 oz is considered to be normal. Baby Birth Weight Statistics.
Development of coronary stents. WALLSTENTÂ® (Schneider AG), a self-expanding, stainless steel wire-mesh structure, was the first coronary stent implanted in a human coronary artery by Sigwart et al. in 1986.
What is a stent placement? A stent is a wire mesh stainless steel tube that holds an artery open and keeps it from closing again. It becomes a permanent part of your artery. Why is it necessary? Fatty deposits can block blood flow through arteries and cause pain. A piece may break off, form a clot, and cause a heart attack or stroke. A stent opens the blockage and keeps it open, which allows blood to flow smoothly. Good blood flow reduces pain and risks of clots forming. How is it done?