Chemotherapy drugs cannot selectively distinguish between normal cells and cancer cells.
True
False
The Correct Answer is True
Choice A: True
Chemotherapy drugs work by targeting rapidly dividing cells, a characteristic of cancer cells. However, they cannot selectively distinguish between cancer cells and normal cells that also divide rapidly, such as those in the bone marrow, digestive tract, and hair follicles. This lack of selectivity leads to the common side effects of chemotherapy, such as hair loss, nausea, and decreased blood cell counts. The inability to differentiate between normal and cancer cells is a significant limitation of traditional chemotherapy.
Choice B: False
This choice is incorrect. If chemotherapy drugs could selectively target only cancer cells, the treatment would have fewer side effects and be more effective. However, the non-selective nature of these drugs means they also damage normal, healthy cells that divide rapidly. This non-selectivity is why patients undergoing chemotherapy often experience a range of side effects, as the treatment impacts both cancerous and healthy cells.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["B","C","E","G"]
Explanation
Choice A: Bradypnea
Bradypnea, or slow breathing, is not typically associated with inadequate pain control. It is more often related to the effects of certain medications, such as opioids, or underlying respiratory conditions. Inadequate pain control is more likely to cause increased respiratory rate (tachypnea) rather than decreased.
Choice B: Irritability
This is a correct answer. Irritability can be a sign of inadequate pain control. Pain can cause significant discomfort and distress, leading to changes in mood and behavior. Patients who are in pain may become irritable, anxious, or agitated.
Choice C: Tachycardia
This is another correct answer. Tachycardia, or an increased heart rate, can be a physiological response to pain. When a patient is in pain, the body’s stress response is activated, leading to the release of stress hormones like adrenaline, which can increase heart rate.
Choice D: Hypoglycemia
Hypoglycemia, or low blood sugar, is not directly related to pain control. It is more commonly associated with diabetes management, fasting, or certain medications. While it is important to monitor blood sugar levels, hypoglycemia is not a typical indicator of inadequate pain control.
Choice E: Poor cough effort
This is a correct answer. Poor cough effort can indicate inadequate pain control, especially after chest surgery. Pain can make it difficult for patients to take deep breaths or cough effectively, which is essential for preventing respiratory complications such as pneumonia.
Choice F: Drowsiness
Drowsiness is not typically a sign of inadequate pain control. It is more often a side effect of pain medications, particularly opioids. While it is important to monitor for excessive sedation, drowsiness alone does not indicate that pain is not being adequately managed.
Choice G: Refusal to participate in physical therapy
This is the final correct answer. Refusal to participate in physical therapy can be a sign of inadequate pain control. Pain can make movement and physical activity difficult and uncomfortable, leading patients to avoid necessary rehabilitation exercises. Effective pain management is crucial for encouraging participation in physical therapy and promoting recovery.
Correct Answer is ["A","B","C","D"]
Explanation
Choice A reason:
Changing the patient’s position every 3 to 4 hours is crucial to prevent complications such as pressure ulcers and deep vein thrombosis (DVT). Immobility can lead to the development of pressure ulcers, especially in patients who are bedridden or have limited mobility. Regular repositioning helps to alleviate pressure on vulnerable areas of the body, promoting better circulation and preventing skin breakdown. Additionally, changing positions can help in preventing DVT by encouraging blood flow and reducing the risk of blood clots forming in the legs.
Choice B reason:
Providing adequate and regular pain medication is essential for postoperative care to ensure patient comfort and facilitate recovery. Pain management is a critical aspect of postoperative care as unmanaged pain can lead to complications such as increased heart rate, hypertension, and delayed wound healing. Adequate pain control allows the patient to participate in necessary activities such as deep breathing exercises and ambulation, which are vital for preventing complications like pneumonia and promoting overall recovery. Pain medication should be administered as prescribed, and the patient’s pain levels should be regularly assessed and documented.
Choice C reason:
Encouraging deep breathing and coughing is vital for preventing respiratory complications such as atelectasis and pneumonia. After surgery, patients are at risk of developing these complications due to the effects of anesthesia and prolonged immobility. Deep breathing exercises help to expand the lungs fully, improving oxygenation and preventing the collapse of alveoli. Coughing helps to clear secretions from the airways, reducing the risk of infection. Nurses should instruct patients on how to perform these exercises effectively and encourage them to do so regularly.
Choice D reason:
Placing the conscious patient in a supine position with the head of the bed elevated is important for maintaining airway patency and promoting optimal respiratory function. Elevating the head of the bed helps to reduce the risk of aspiration and improves lung expansion, facilitating better breathing. This position is particularly beneficial for patients who may have residual effects of anesthesia or are at risk of respiratory complications. It also helps in reducing the workload on the heart and improving overall comfort.
Choice E reason:
Encouraging bed rest for the first 4 hours after surgery is generally not recommended as early mobilization is crucial for preventing complications such as DVT, pulmonary embolism, and muscle atrophy. While it is important to ensure that the patient is stable before encouraging movement, prolonged bed rest can lead to adverse outcomes. Instead, patients should be encouraged to engage in light activities as soon as they are able, under the supervision of healthcare professionals. This helps to promote circulation, improve respiratory function, and enhance overall recovery.
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