Why would hypocalcemia cause bleeding disorders? Why would hyperkalemia lead to bradycardia?
Thromboplastin released from damaged tissue in presence of calcium ions initiate clotting of blood.
Potassium ions in excess enlarges heart results to bradicardia.
Blood clotting is due to more than 12 various intrinsic and extrinsic factors. One of the key factors is calcium ions. If there are no calcium ions blood do not clot. In blood bank stored blood is with potassium oxalate. Available calcium ions turn to calcium oxalate. It keeps blood fluid.
Potassium ions are required for normal relaxation of heart. If too much potassium ions are present in blood heart do not contract normally. It leads to temporary enlargement of heart. In medical terms it is known as bradicardia.