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.
1 Once in place, the balloon is inflated to compress plaque against the artery wall and stretch the artery open to increase blood flow to the heart. 2  Stent. 3  A stent is a small metal mesh tube that acts as a scaffold to provide support inside your coronary artery.