The Demarc Pre-Wire is not interfaced into the local access providers's side of the Demarcation Point and thus is not a demarc extension. Patch Cord Testing. A demarc extension by definition is a complete channel, which can include patch cords or cross connects.
Answer: Left Axis Deviation (LAD) refers to the pattern of electrical activation that occurs in the heart. LAD is an EKG-specific finding and not necessarily indicative of any specific cardiovascular condition. was recently found to have Left Axis Deviation (LAD) on my EKG. General responses to selected questions from Joel Braunstein, MD, of Johns Hopkins University and Joseph Toscano, MD.
The sum off all that current can be represented by a vector and a normal heart has a vector that is of certain direction. That is called normal axis of the heart. Left axis deviation implies that there is more muscle on the left side of the heart, causing the axis to swing leftwards.