you have or have already had kidney problems, you have a high blood pressure, you blood volume is too low (hypovolaemia), you suffer from a disease which causes your blood to thicken, you suffer from an increased tendency for blood clotting (thrombophilia),
ha fokozottan hajlamos a vérrögképződésre (trombofília), ha olyan betegségben szenved, ami alacsony ellenanyagszintet idéz elő a szervezetében (hipogammaglobulinémia vagy agammaglobulinémia), 22