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.
Duvets, Defined. Duvet is a French word for down, those small feathers used to fill pillows, comforters, jackets and furniture. A duvet is a comforter, sometimes filled with down or other materials that render it non-machine-washable.