O type patients have preform IgG anti A anti B. Not IgM antibodies "Shortly after transfusion" raise up suspicion for anaphylaxis. no sign of hemolysis-> favor anaphylaxis due to IgA deficiency=> effector cell is Mast cells
This is complete heart block. You can find the p wave and QRS complex showed up in different rate
O type patients have preform IgG anti A anti B. Not IgM antibodies "Shortly after transfusion" raise up suspicion for anaphylaxis. no sign of hemolysis-> favor anaphylaxis due to IgA deficiency=> effector cell is Mast cells