A nurse is studying the differences between normal cells and benign tumor cells. What information is included in this?
Benign tumors have lost their cellular regulation from contact inhibition.
Benign tumors typically grow in the wrong place or at the wrong time.
Benign tumors grow through invasion of other tissue.
The loss of characteristics of the parent cells is referred to as anaplasia.
The Correct Answer is B
Choice B rationale:
Benign tumors typically grow in the wrong place or at the wrong time. This is a key distinguishing feature of benign tumors compared to normal cells. Normal cells have precise mechanisms that control their growth, ensuring they divide and multiply only when and where they are needed. Benign tumors, however, have disruptions in these regulatory mechanisms, leading to abnormal growth patterns. This means they may grow in locations where they don't belong or continue to grow even when they are no longer needed.
Here's a detailed explanation of why the other choices are incorrect:
Choice A:
Benign tumors have not lost their cellular regulation from contact inhibition. Contact inhibition is a process that stops normal cells from growing when they come into contact with other cells. Benign tumors still maintain this ability, which helps to limit their growth and prevent them from spreading to other tissues.
Choice C:
Benign tumors do not grow through invasion of other tissue. Invasion is a hallmark feature of malignant tumors (cancers). Benign tumors, on the other hand, typically grow as encapsulated masses, meaning they are surrounded by a well-defined border that separates them from surrounding tissues. They do not infiltrate or invade surrounding structures.
Choice D:
Anaplasia refers to the loss of differentiation and resemblance to the parent cells, which is a characteristic of malignant tumors, not benign tumors. Benign tumors still maintain a degree of differentiation, meaning they retain some of the characteristics of the normal cells from which they originated.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","C","D","E"]
Explanation
Choice A rationale:
Prednisone:
Corticosteroid that suppresses the immune system: It's crucial to consult with the primary healthcare provider (PCP) because prednisone can impair wound healing and increase the risk of infection after surgery. The PCP may need to adjust the dosage or temporarily discontinue prednisone prior to surgery.
Potential for adrenal insufficiency: Abrupt cessation of prednisone can lead to adrenal insufficiency, a life-threatening condition. The PCP will provide guidance on how to taper the medication safely before surgery.
Interaction with anesthesia: Prednisone can interact with certain anesthetic agents, potentially increasing the risk of complications. The PCP and anesthesiologist will need to coordinate care to ensure safe medication management during surgery.
Choice B rationale:
Metoprolol:
Beta-blocker that lowers blood pressure and heart rate: While metoprolol is generally safe to continue before surgery, it's still essential to inform the PCP and anesthesiologist about its use. They will monitor heart rate and blood pressure closely during and after surgery, as metoprolol can interact with certain medications used during the procedure.
Choice C rationale:
Warfarin:
Blood thinner that prevents blood clots: Warfarin requires careful management around surgery due to its significant bleeding risk. The PCP will typically recommend holding warfarin for several days before surgery to allow for normalization of blood clotting. They may also bridge with a shorter-acting anticoagulant if necessary.
Potential for bleeding complications: If warfarin is not managed appropriately, it can lead to excessive bleeding during or after surgery. The PCP will closely monitor the patient's INR (international normalized ratio), a measure of blood clotting, to ensure it's within the safe range for surgery.
Choice D rationale:
Insulin:
Hormone that regulates blood sugar: Patients with diabetes who take insulin require careful blood sugar control around surgery to prevent complications. The PCP will provide specific instructions on how to adjust insulin doses before, during, and after surgery, as insulin needs often change due to the stress of surgery and the impact of anesthesia.
Risk of hypoglycemia and hyperglycemia: Both low blood sugar (hypoglycemia) and high blood sugar (hyperglycemia) can have serious consequences during and after surgery. The PCP will work with the patient to manage blood sugar levels and prevent these complications.
Choice E rationale:
Phenytoin:
Anticonvulsant medication that controls seizures: Phenytoin has a narrow therapeutic window, meaning that blood levels must be closely monitored to ensure efficacy and prevent toxicity. Surgery can affect phenytoin levels, so the PCP will likely recommend checking a blood level before surgery and adjusting the dose as needed.
Potential for drug interactions: Phenytoin interacts with many medications, including some commonly used during surgery. The PCP will need to review the patient's medication list carefully and make any necessary adjustments to prevent interactions.
Choice F rationale:
Omega-3 fatty acid:
Generally safe to continue before surgery: Omega-3 fatty acids are not known to have significant interactions with medications used during surgery or to pose risks for wound healing or bleeding. However, it's always best to inform the PCP about any supplements being taken.
Correct Answer is A
Explanation
Choice A rationale:
Prednisone is a corticosteroid that suppresses the body's natural production of cortisol. Cortisol is a hormone that is essential for life, and it plays a role in many important bodily functions, including:
Regulating blood sugar levels Maintaining blood pressure Reducing inflammation Responding to stress
When a person takes prednisone for a long period of time, their body begins to rely on the medication to provide cortisol. If the medication is stopped suddenly, the body cannot produce enough cortisol on its own, which can lead to a life-threatening condition called adrenal insufficiency.
Adrenal insufficiency can cause a variety of symptoms, including: Extreme fatigue
Weakness Dizziness Nausea Vomiting Abdominal pain Confusion
Loss of consciousness
To prevent adrenal insufficiency, it is important to taper off prednisone slowly over a period of time. This allows the body to gradually adjust to producing cortisol on its own.
Here are some additional details about why prednisone should never be discontinued abruptly: The risk of adrenal insufficiency is highest when prednisone has been taken for more than 3 weeks. The longer a person has been taking prednisone, the slower the taper should be.
It is important to follow the tapering instructions provided by the healthcare provider.
If a person experiences any symptoms of adrenal insufficiency, they should seek medical attention immediately.
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