A nurse is preparing to administer diphenhydramine to a client who is to receive a blood transfusion. The nurse should explain that the purpose diphenhydramine is to prevent which of the following manifestations of a transfusion reaction?
Low-back pain
Fever
Dyspnea
Urticaria
The Correct Answer is D
A) Low-back pain:
Low-back pain is not typically associated with transfusion reactions. While certain complications of blood transfusions, such as transfusion-related acute lung injury (TRALI) or hemolytic reactions, can cause back pain, diphenhydramine is not specifically administered to prevent this manifestation.
B) Fever:
Fever can be a manifestation of various transfusion reactions, including febrile non-hemolytic reactions or bacterial contamination of blood products. However, diphenhydramine is not typically administered to prevent fever associated with transfusion reactions. Instead, measures such as leukoreduction of blood products or premedication with acetaminophen may be used to reduce the risk of febrile reactions.
C) Dyspnea:
Dyspnea, or difficulty breathing, can occur in severe transfusion reactions such as transfusion-related acute lung injury (TRALI) or anaphylaxis. While diphenhydramine may be part of the treatment for anaphylaxis, it is not specifically administered to prevent dyspnea associated with transfusion reactions.
D) Urticaria.
Urticaria, commonly known as hives, is a common manifestation of an allergic transfusion reaction. Diphenhydramine is an antihistamine medication that can help prevent or alleviate allergic reactions, including urticaria, by blocking the action of histamine, a substance released during allergic reactions. Administering diphenhydramine before a blood transfusion is a preventive measure to reduce the risk of allergic transfusion reactions, including urticaria.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A) Stool softener:
Stool softeners, such as docusate sodium, work by adding moisture to the stool, making it softer and easier to pass. They do not directly stimulate bowel movements or peristalsis through irritation of the bowel lining.
B) Saline/osmotic laxative:
Saline or osmotic laxatives, such as magnesium hydroxide (milk of magnesia) and polyethylene glycol (PEG), work by drawing water into the intestines, which softens the stool and increases bowel motility. They do not primarily act by irritating the bowel lining.
C) Stimulant laxative.
Stimulant laxatives work by directly stimulating the nerves in the intestines, which increases the rhythmic contractions of the intestines (peristalsis) and promotes bowel movements. These medications irritate the bowel lining, leading to increased motility and expulsion of stool. Examples of stimulant laxatives include bisacodyl and senna.
D) Bulk-forming laxative:
Bulk-forming laxatives, such as psyllium and methylcellulose, work by increasing the bulk and water content of the stool, which stimulates bowel movements. They do not directly irritate the bowel lining to promote peristalsis. Instead, they absorb water and swell in the intestines, creating a larger, softer stool that is easier to pass.
Correct Answer is ["28"]
Explanation
To calculate the IV infusion rate in drops per minute (gtt/min), you can use the following formula:
IV infusion rate (gtt/min) =(Total volume (mL)×Drop factor (gtt/mL)) / Total time (min)
Given:
Total volume = 1000 mL
Drop factor = 10 gtt/mL
Total time = 6 hours = 6 hours × 60 minutes/hour = 360 minutes
Substitute the given values into the formula:
IV infusion rate (gtt/min) = (1000mL×10gtt/mL)/360 min
IV infusion rate (gtt/min) = 10,000/360
\(IV infusion rate (gtt/min)≈27.78gtt/min\)
Rounding to the nearest whole number, the IV infusion rate is approximately 28 gtt/min
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