Medical MCQ - A 40 year old female patient complains of excessive bleeding. Patient gives a history of road traffic accident 5 hours ago and had a lacerated wound on lower back region. Blood grouping test reveals presence of antigen A and antigen H. Anti Rh D antibody and anti B antibody are also present. This patient can receive transfusion from a donor with blood group?

A 40 year old female patient complains of excessive bleeding. Patient gives a history of road traffic accident 5 hours ago and had a lacerated wound on lower back region. Blood grouping test reveals presence of antigen A and antigen H. Anti Rh D antibody and anti B antibody are also present. This patient can receive transfusion from a donor with blood group?

A positive

O positive

B negative

Bombay blood group

Question Category:

Pathology

Correct Answer:

Bombay blood group

Description:

→ Apart from A< B and O, RBC of type O contains large amount of another antigen called H substance. → H substance is genetically different from ABO, but is a precursor of A and B antigens. → An O group individual who inherits A or B genes, but fails to inherit H gene from either parent is called Oh phenotype or Bombay blood group.

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