You Have a Patient Who Has Rheumatoid Factor

question 33

Multiple Choice

You have a patient who has rheumatoid factor. If you are performing an assay for various infectious diseases in which you capture the patient's IgM, add the antigen, and then add a labeled antibody to the antigen, the

• A)reactions with all antigens tested would be positive
• B)reactions with all antigens tested would be negative
• C)controls would be negatively affected
• D)assay would not be affected

---

Definitions:

Electrode Paddles

Devices used during defibrillation to deliver an electric current through the chest wall to the heart.

Ventricular Contractions

The rhythmic tightening and pumping action of the heart's ventricles, which send blood out to the body (systole) and relax to fill with blood (diastole).

Inferior Vena Cava

The large vein that carries deoxygenated blood from the lower and middle body into the right atrium of the heart.

Saphenous

Referring to veins located in the legs, particularly the great and small saphenous veins, which are often involved in varicose veins and bypass surgery.