Upper Marlboro, officially the Town of Upper Marlboro, is the seat of Prince George's County, Maryland in the United States.
According to the American Heart Association, potassium imbalances are the most common electrolyte-associated cardiac arrhythmias. Potassium plays a role in both nerve conduction and the heartâs ability to send an electrical impulse. Low potassium levels can cause relatively stable arrhythmias, while high potassium levels can quickly lead to lethal arrhythmias. Sodium, magnesium and calcium imbalances also place the heart at risk for arrhythmias.
Sodium is equally important for heart function, but its role is different. Sodium is needed for voltage-gated sodium channels, which are also in the outer membranes of cardiac cells, but they are important for initiating the action potential and triggering contractions of the cardiac muscle fibers.lectrolytes are especially important for normal contraction of skeletal and cardiac muscle fibers. Without the appropriate balance of electrolytes such as potassium and sodium, heart contractions become abnormal and the risk of heart attack increases.