Winter mustard, Napa Valley. In case you are wondering, the highest price I have heard of is in the $300-325,000 per an acre for land in the Rutherford area. One was by Francis Ford Coppla and the the other was by Andy Beckstoffer, two of the Valleyâs vineyard all-stars.
So the first electrical signal on a normal ECG originates from the atria and is known as the P wave. Although there is usually only one P wave in most leads of an ECG, the P wave is in fact the sum of the electrical signals from the two atria, which are usually superimposed.
Heart attack. An ECG can show evidence of a previous heart attack or one that's in progress. The patterns on the ECG may indicate which part of your heart has been damaged, as well as the extent of the damage. Inadequate blood and oxygen supply to the heart.