It's performed to correct single ventricle birth defect. The normal heart has fours chamber - two upper atria and two lower ventricles. With single ventricle there is either a comlpete absence of a second ventricle or it is underdeveloped. Cauterization creates a second ventricle or enlarges a poorly developed one. Source(s): I'm a nurse.
Trivet definition, a small metal plate with short legs, especially one put under a hot platter or dish to protect a table. See more.
Riveted Joint. A riveted joint is a permanent joint which uses rivets to fasten two materials. A rivet is a structure that has a hemispherical head on one side and a cylindrical shaft on the other.t present there are various joints that suit the specific requirement and are related to the metals that require fastening. There are basically two major categories of joints: Permanent joints and Temporary joints. This article is about the former.