Connect the Switch. When all of the fixtures have been wired, pull the cable from the first light fixture into the switch box and secure it with a box clamp. Pull the power wire from the main circuit into the box. (Make sure the power is shut off, and test the wires with a circuit tester to be safe.).onnect the Wire to the Fixtures. At each fixtureâs attached junction box, remove a knockout tab with a screwdriver (Image 1) for each of the incoming, and outgoing, cables and pull the cables into the box. Secure the cables with box clamps.
Mitral regurgitation is the most common type of heart valve disorder. Blood that flows between different chambers of your heart must flow through a valve. The valve between the two chambers on the left side of your heart is called the mitral valve.
In mitral valve regurgitation, the mitral valve doesn't close tightly. With each heartbeat, some blood from the left ventricle flows backward into the left atrium instead of moving forward into the aorta. This essentially means that the heart pulls blood backward.ossible causes of mitral valve regurgitation include: 1  Mitral valve prolapse. 2  In this condition, the leaflets and tendon-like cords supporting the mitral valve weaken and stretch so that with each contraction of the left ventricle, the valve leaflets bulge (prolapse) into the left atrium.