Plasma pheresis is a therapeutic procedure used in the treatment of Guillain-Barré syndrome. Which of the following statements regarding plasma pheresis is correct?
Plasma pheresis is a surgical procedure that involves the transplantation of plasma into the body.
Plasma pheresis is used to replace clotting factors in the blood.
Plasma pheresis helps to remove antibodies that may be attacking the nerves in Guillain-Barré syndrome.
Plasma pheresis involves the removal of red blood cells from the blood.
The Correct Answer is C
A. Plasmapheresis is not a surgical procedure, nor does it involve the transplantation of plasma.
B. Plasmapheresis is not used for replacing clotting factors; it is primarily for removing harmful substances from the plasma.
C. Plasmapheresis is a procedure that removes antibodies from the blood that may be attacking the nerves, thereby reducing the autoimmune response in Guillain-Barré syndrome.
D. Plasmapheresis does not involve the removal of red blood cells; it focuses on the plasma component of the blood.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. 3% sodium chloride is a hypertonic solution used to treat severe hyponatremia by raising the serum sodium levels rapidly.
B. 0.9% sodium chloride is isotonic and would not be sufficient to correct severe hyponatremia as quickly.
C. Dextrose 5% in 0.9% sodium chloride is not typically used for severe hyponatremia treatment.
D. Dextrose 5% in 0.45% sodium chloride is hypotonic and not suitable for treating severe hyponatremia.
Correct Answer is ["18"]
Explanation
To calculate the IV pump setting, first convert the patient's weight from pounds to kilograms, knowing that 1 kilogram equals 2.2 pounds. The patient weighs 195 pounds, which is approximately 88.64 kilograms (195 / 2.2). Next, calculate the total units of Heparin needed per hour by multiplying the patient's weight in kilograms by the dosage ordered: 20 units/kg/hr. So, 88.64 kg * 20 units/kg/hr equals 1,772.8 units/hr. Now, determine how many milliliters per hour this dosage requires. Since the premixed bag contains 25,000 units in 250 ml, there are 100 units per ml (25,000 units / 250 ml). Finally, divide the total units needed per hour by the concentration to find the volume needed per hour: 1,772.8 units/hr / 100 units/ml equals 17.728 ml/hr. Rounded to the nearest whole number, the IV pump should be set to 18 ml/hr.
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