Some places you can check a pulse on a newborn. 1  Apical: Gently place two fingers over the center of the sternum (breast bone) and then move them about 1 inch to the left of the breast bone, at or above the nipple line. Without compressing, you should be able to feel the baby's heart beat beneath.
The body maintains the right level of potassium by matching the amount of potassium consumed with the amount lost. Potassium is consumed in food and drinks that contain electrolytes (including potassium) and lost primarily in urine. Some potassium is also lost through the digestive tract and in sweat.
Potassium is a necessary ingredient in the human body. It is imperative for the proper functioning of nerve and muscle cells. Potassium comes from foods such as bananas, apricots and dairy products. The kidneys maintain the correct level of potassium by regulating what is present in the body and rejecting the excess through the urine. The metabolic disorder known as hypokalemia is a disease in which potassium levels in the blood stream drop below normal.