Hypercholesterolemia (also spelled hypercholesterolaemia also called dyslipidemia) is the presence of high levels of cholesterol in the blood.ll the lipoproteins carry cholesterol, but elevated levels of the lipoproteins other than HDL (termed non-HDL cholesterol), particularly LDL-cholesterol are associated with an increased risk of atherosclerosis and coronary heart disease. In contrast, higher levels of HDL cholesterol are protective.
By Mayo Clinic Staff. Low potassium (hypokalemia) refers to a lower than normal potassium level in your bloodstream. Potassium is a chemical (electrolyte) that is critical to the proper functioning of nerve and muscles cells, particularly heart muscle cells. Normally, your blood potassium level is 3.6 to 5.2 millimoles per liter (mmol/L). A very low potassium level (less than 2.5 mmol/L) can be life-threatening and requires urgent medical attention.
Hyperkalemia in ESRD. Hyperkalemia is a condition with too much potassium in blood. Potassium plays a vital role in keeping the heart and other muscles work properly. If the level of potassium in blood is too high, it can be very dangerous and even cause heart failure. Kidneys can filter extra potassium from the blood.