Abstract
In critically ill patients, hypocalcaemia is a common finding. Also variable derangements in the normally tight Ca2+-mediated control of the parathyroid hormone (PTH) secretion have been found. Utilizing coronary artery by-pass grafting (CABG) as a standardized model of severe trauma, 18 patients underwent determinations of blood levels of calcium, magnesium (Mg), ionized calcium (Ca2+