A nurse is caring for a client who has myasthenia gravis. The nurse should recognize that this disease is caused by which of the following types of hypersensitivities?
Delayed
Immediate
Immune complex-mediated
Cytotoxic
The Correct Answer is D
Cytotoxic hypersensitivity is a type of hypersensitivity that involves the production of IgG or IgM antibodies that bind to antigens on the surface of cells, leading to cell destruction by complement activation or antibody-dependent cellular cytotoxicity. Myasthenia gravis is an example of a cytotoxic hypersensitivity, as it is caused by autoantibodies that target the acetylcholine receptors on the muscle cells, impairing neuromuscular transmission and causing muscle weakness.
Delayed hypersensitivity is a type of hypersensitivity that involves the activation of T cells and macrophages, leading to inflammation and tissue damage after several hours or days of exposure to an antigen. Examples of delayed hypersensitivity include contact dermatitis, tuberculin skin test, and transplant rejection.
Immediate hypersensitivity is a type of hypersensitivity that involves the production of IgE antibodies that bind to mast cells or basophils, leading to degranulation and release of histamine and other mediators, causing anaphylaxis, urticaria, or allergic rhinitis within minutes of exposure to an antigen.
Immune complex-mediated hypersensitivity is a type of hypersensitivity that involves the formation of antigen- antibody complexes that deposit in tissues or blood vessels, leading to complement activation and inflammation, causing vasculitis, glomerulonephritis, or serum sickness within hours or days of exposure to an antigen.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["125"]
Explanation
To calculate the infusion rate, the nurse should use the following formula:
Infusion rate (mL/hr) = Volume (mL) / Time (hr)
Plugging in the given values, the nurse should get:
Infusion rate (mL/hr) = 250 mL / 2 hr
Infusion rate (mL/hr) = 125 mL/hr
The nurse should round the answer to the nearest whole number and use a leading zero if it applies. Therefore, the nurse should set the IV pump to deliver 125 mL/hr.
Correct Answer is A
Explanation
Turn the client's head to the side.
The nurse should turn the client's head to the side first to prevent aspiration of oral secretions and maintain a patent airway. This is the priority action according to the airway, breathing, and circulation (ABC) principle.
Check the client's motor strength is wrong because it is not the priority action and it is not feasible during a seizure. The nurse should check the client's motor strength after the seizure to assess for any neurological deficits or postictal weakness.
Document the time the seizure began is wrong because it is not the priority action and it can be done later. The nurse should document the time, duration, type, and characteristics of the seizure, but only after ensuring the client's safety and well-being.
Loosen the clothing around the client's waist is wrong because it is not the priority action and it may not be necessary. The nurse should loosen any tight clothing that could impair breathing or circulation, but only after securing the airway and protecting the head from injury.
Turn the client's head to the side.
The nurse should turn the client's head to the side first to prevent aspiration of oral secretions and maintain a patent airway. This is the priority action according to the airway, breathing, and circulation (ABC) principle.
Check the client's motor strength is wrong because it is not the priority action and it is not feasible during a seizure. The nurse should check the client's motor strength after the seizure to assess for any neurological deficits or postictal weakness.
Document the time the seizure began is wrong because it is not the priority action and it can be done later. The nurse should document the time, duration, type, and characteristics of the seizure, but only after ensuring the client's safety and well-being.
Loosen the clothing around the client's waist is wrong because it is not the priority action and it may not be necessary. The nurse should loosen any tight clothing that could impair breathing or circulation, but only after securing the airway and protecting the head from injury.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.