A nurse is teaching a client newly diagnosed with a seizure disorder about phenytoin sodium therapy. What information should the nurse stress regarding the client stopping the drug suddenly? The drug should not be stopped abruptly because:
hypoglycemic event often develops
physical dependency on the drug develops over time.
a heart block is likely to develop.
status epileptic us may develop
The Correct Answer is D
A) Hypoglycemic event often develops:
Phenytoin is an anticonvulsant, and while it can affect glucose metabolism, hypoglycemia is not a typical consequence of abruptly stopping the drug. This is not a primary concern when discontinuing phenytoin therapy. Hypoglycemia is more commonly associated with medications like insulin or sulfonylureas, not anticonvulsants like phenytoin.
B) Physical dependency on the drug develops over time:
Phenytoin does not cause physical dependence in the way that some other substances (e.g., alcohol, opioids) can. While the body can become used to a medication over time, and withdrawal symptoms can occur, the risk of physical dependence is not the main reason why phenytoin should not be stopped suddenly.
C) A heart block is likely to develop:
Phenytoin is known to have effects on cardiac conduction, and it can cause heart rhythm disturbances like bradycardia or a prolonged PR interval, especially with toxicity. However, the risk of a heart block developing due to abrupt discontinuation of phenytoin is not the primary concern.
D) Status epilepticus may develop:
The most serious risk of suddenly stopping phenytoin, or any anticonvulsant, is the potential for status epilepticus. Status epilepticus is a medical emergency where seizures occur continuously without recovery in between, which can be life-threatening. Abruptly discontinuing phenytoin can lead to a rebound increase in seizure activity, which can result in status epilepticus.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A) IM epinephrine is the fastest route of administration:
While epinephrine is often administered intramuscularly in cases of anaphylaxis and allergic reactions, the speed of action is not the primary reason for choosing this route over intravenous (IV) administration in this situation. Intramuscular administration of epinephrine allows for a rapid onset of action, but it is not necessarily the fastest route compared to IV. IV administration would act more quickly in an emergency setting where immediate blood circulation is critical, but IM is preferred in allergic reactions to prevent excessive systemic effects and to avoid rapid peaks in plasma levels.
B) IV epinephrine is only administered during cardiac arrest:
Epinephrine is generally administered intravenously during life-threatening situations such as cardiac arrest or severe shock, where immediate circulatory effects are needed. In cases of anaphylaxis, however, intramuscular (IM) administration of epinephrine is the preferred route because it allows for a more controlled absorption rate and reduces the risk of excessive blood pressure and other adverse cardiovascular effects. This is the correct rationale for why epinephrine is administered IM in the context of an allergic reaction.
C) Epinephrine would not be administered in this situation:
Epinephrine is the first-line treatment for severe allergic reactions and anaphylaxis, especially in cases where symptoms like wheezing, shortness of breath, urticaria, and itching are present. Therefore, withholding epinephrine is not an appropriate response in this situation. Immediate intervention with epinephrine is critical to reverse the symptoms of anaphylaxis and prevent further respiratory distress or cardiovascular collapse.
D) IM epinephrine is less concentrated than IV:
The concentration of epinephrine used for IM and IV administration is the same. The primary reason for choosing the IM route over the IV route is the slower absorption and the fact that it minimizes the risk of a rapid increase in systemic blood pressure and other adverse reactions. While IM epinephrine may be absorbed more slowly than IV, its concentration is appropriate for treating anaphylaxis effectively. The choice of IM is based on safety and controlled response, not on the concentration of the drug.
Correct Answer is ["D","E"]
Explanation
A) Pneumonia: Pneumonia is a direct cause of ARDS, as it involves direct inflammation and infection of the lung tissue, leading to impaired oxygen exchange and damage to the alveolar-capillary membrane. It results in fluid accumulation in the lungs, which is a key characteristic of ARDS.
B) Drowning: Drowning is another direct cause of ARDS. It involves the aspiration of water into the lungs, which directly damages lung tissue, causing pulmonary edema and impaired oxygenation.
C) Aspiration: Aspiration of food, liquid, or vomit into the lungs is also a direct cause of ARDS. The aspirated material can lead to chemical pneumonia, bacterial infection, and inflammation of the lungs, which in turn causes ARDS.
D) Sepsis: Sepsis is an indirect cause of ARDS. It can lead to widespread inflammation throughout the body, including the lungs, through the release of inflammatory mediators (cytokines, interleukins, etc.). These systemic inflammatory responses can increase capillary permeability in the lungs, causing fluid to leak into the alveoli, which leads to ARDS.
E) Blood Transfusion: Blood transfusion, particularly when associated with transfusion-related acute lung injury (TRALI), is an indirect cause of ARDS. TRALI is a serious complication that can result from receiving blood products, where the transfused blood causes an immune response leading to pulmonary damage. It indirectly triggers inflammation and fluid buildup in the lungs, contributing to ARDS.
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