RBC morph, ABNORMAL DISTRIBUTION

1. What is agglutination?
A. RBCs becoming smaller
B. RBCs breaking apart
C. RBCs forming clusters
D. RBCs losing their hemoglobin

C. RBCs forming clusters

In agglutination, what attacks/binds to the RBC antigen?
A. RBC enzyme
B. Antibody
C. Platelet
D. Hemoglobin

B. Antibody

Agglutination is most closely associated with which type of antibody?
A. Warm antibody
B. Cold antibody
C. IgE only
D. No antibody

B. Cold antibody

. What happens to the agglutination when the sample is warmed?
A. It becomes worse
B. It stays exactly the same
C. It disappears
D. RBCs become sickle cells

C. It disappears

Which condition is associated with cold antibody agglutination?
A. Cold hemagglutination disease
B. Iron deficiency
C. Hereditary elliptocytosis
D. Thalassemia

A. Cold hemagglutination disease

A blood smear shows RBCs clumped together at room temperature. The sample is warmed, and the clumping disappears. What phenomenon is this?

Cold antibody agglutination

What is rouleaux?

A. RBCs breaking apart
B. RBCs stacking like coins
C. RBCs becoming sickle-shaped
D. RBCs becoming smaller

B. RBCs stacking like coins

What causes rouleaux according to your notes?

A. Decreased hemoglobin
B. Increased globulins or fibrinogen
C. Decreased platelets
D. Increased WBCs

B. Increased globulins or fibrinogen

What happens to rouleaux when saline is added/diluted?

A. It gets worse
B. It disappears
C. RBCs become sickled
D. Nothing happens

B. It disappears

Rouleaux can be associated with an:

A. Increased ESR
B. Decreased ESR
C. Normal ESR only
D. Decreased WBC count

A. Increased ESR

Which condition is associated with rouleaux?

Multiple myeloma

waldenstrom’s macroglobulinemia

Chronic inflammatory disorder