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.
The downward force required to deform the rivet with an automatic riveting machine is created by a motor and flywheel combination, pneumatic cylinder, or hydraulic cylinder. Manual feed riveting machines usually have a mechanical lever to deliver the setting force from a foot pedal or hand lever.Riveting machines can be sub-divided into two broad groups â impact riveting machines and orbital (or radial) riveting machines.anual feed riveting machines usually have a mechanical lever to deliver the setting force from a foot pedal or hand lever. Riveting machines can be sub-divided into two broad groups â impact riveting machines and orbital (or radial) riveting machines.