Tests for Structural Heart Disease. These tests are commonly used to diagnose structural heart disease, such as heart failure, valvular heart disease and congenital heart disease: Echocardiogram - can detect numerous forms of structural heart disease.
If you are talking only about the outlets, they need to be grounded so your third prong of cords plugged in actually does something. Typically, if you have three wire wiring, all you have to do is screw the bare wire to the body of the receptacle box and then pigtail it onto the base of the receptacle. Source(s):ince it could get expensive replacing every outlet with a gfi outlet you can chain them together. put the gfi on the first outlet on the circuit and the rest will be protected. Its not big risk not having a ground. it took 75+ years for homes to be wired with grounds.
Anything from frayed cables and wires to stray voltage to overloaded outlets can cause fires. Frayed cables are an issue because the protective exterior to the wires that carry the current, which run hot, is torn up and can catch fire from the heat of the wiring.