The most common cause of fatal transfusion reactions:

Source: sputum; small grayish-white colonies on BAP,gram positive cocci, that is catalase, bacitracin and optochin disc  and bile esculin negative.  It doesn’t grow in 6.5% NACl broth and is PYR negative. Choose the best answer:

The erythrocyte morphology would be described as macrocytic normochromic in which of these instances?

In a sputum culture from a patient with cystic fibrosis, you recover an aerobe that is oxidase positive and produces mucoid, brown, “gummy” colonies on MacConkey agar.  This organism is probably:

The principle of the Kleihauer-Betke test is:  

Thrombin’s function in hemostasis:         cleave fibrinogen         activate XIII         activate V and VIII         inactivate fibrinolysis         inactivate Va, VIIIa  

(continued from previous question)  Which procedure will be necessary to provide the safest transfusion?

Which is the most appropriate transfusion therapy for thrombocytopenia due to chemotherapy treatment?  

Respiratory acidosis is described as:

A patient just back from Sierra Leone is admitted with high fever and chills. His spleen is enlarged.  A giemsa stained blood smear shows intraerythrocytic  rings, some multiple with occasional “banana” shaped gametocytes.  This patient probably has: