Question

Use the following choices to match the acceptable method(s) of performing compatibility testing in the situations listed below. More than one answer may be acceptable, so list all possibilities for each scenario. After each scenario, explain why the type of compatibility testing is acceptable a. Antiglobulin (AHG) crossmatch b. Immediate-spin crossmatch c. Electronic crossmatch 1) A chronically transfused patient with history of anti-E. The antibody is not detectable in the current sample. 2) Patient donated two units of autologous blood. Pre-transfusion antibody screen is negative. 3) transfused before and has a historical blood type of A negative with no history of antibodies Preoperative patient with negative antibody screen. Patient has beern

Answer 1

1 b

In immediate spin cross match no clinically significant antibodies detected in the current sample ,no clinically significant antibodies in the historical records.

2a

it is performed to detect IgG antibodies that may cause transfusion reactions and is used for the antibody screening procedure.

3 c

In Electronic crossmatching the donor blood is matched electronically with the patient;so serological cross match is performed,provided that antibody screening tests carried out on the patient are negative and no anomaloys results are obtained in the grouping and there is no history of irregular antibodies,blood of the same ABO and Rh type can be selected and issued using a validated computer program.