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.
P Wave. The P wave represents atrial depolarization. In a normal EKG, the P-wave precedes the QRS complex. It looks like a small bump upwards from the baseline. The amplitude is normally 0.05 to 0.25mV (0.5 to 2.5 small boxes). Normal duration is 0.06-0.11 seconds (1.5 to 2.75 small boxes).