A nurse learns that which of the following is the single biggest risk factor for developing cancer?
Advancing age
Exposure to tobacco
Exposure to occupational chemicals
Infection with an oncovirus.
The Correct Answer is B
Choice A rationale:
While advancing age is a significant risk factor for cancer, it is not considered the single biggest risk factor. The risk of developing cancer does increase with age, primarily due to the accumulation of DNA damage over time. This damage can arise from various sources, including exposure to carcinogens, errors in DNA replication, and oxidative stress. With age, the body's ability to repair DNA damage also declines, making cells more susceptible to cancerous changes.
However, it's important to note that cancer can develop at any age, and even younger individuals can be affected if exposed to other significant risk factors.
Choice B rationale:
Exposure to tobacco is widely recognized as the single biggest risk factor for developing cancer. It is estimated to be responsible for about 25-30% of all cancer deaths worldwide.
Tobacco smoke contains over 70 known carcinogens, which are substances that can damage DNA and lead to cancer. These carcinogens can affect various organs in the body, including the lungs, mouth, throat, esophagus, stomach, pancreas, liver, bladder, kidney, cervix, and colon.
The risk of cancer increases with the amount and duration of tobacco use. Even exposure to secondhand smoke can increase the risk of cancer.
Quitting tobacco use is the most effective way to reduce the risk of cancer.
Choice C rationale:
Exposure to occupational chemicals is a known risk factor for certain types of cancer, such as lung cancer, bladder cancer, and leukemia. However, it is not considered the single biggest risk factor for developing cancer overall.
The risk of cancer from occupational chemicals depends on the specific chemical, the level of exposure, and the duration of exposure.
Workplace safety measures, such as using protective equipment and limiting exposure to hazardous chemicals, can help reduce the risk of cancer.
Choice D rationale:
Infection with certain viruses, known as oncoviruses, can increase the risk of developing certain types of cancer. For example, infection with human papillomavirus (HPV) can increase the risk of cervical cancer, and infection with hepatitis B virus (HBV) can increase the risk of liver cancer.
However, oncoviruses are not considered the single biggest risk factor for developing cancer overall. Vaccines are available to protect against some oncoviruses, such as HPV and HBV.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale:
While it's true that dehydration can lead to incontinence, simply stating this fact to the patient doesn't directly address the issue of dehydration. It doesn't provide actionable steps to correct the dehydration.
Incontinence can be a result of dehydration, but addressing the dehydration is the primary concern to prevent further complications.
Providing information about incontinence might be helpful in other contexts, but it's not the most effective advice to address mild dehydration in this specific scenario.
Choice B rationale:
Diuretics promote fluid loss through urination, which can worsen dehydration.
Advising the patient to take a diuretic in the morning would be counterproductive in this case. The goal is to increase fluid intake, not further deplete fluid levels.
It's important to consider the patient's medications and potential interactions before suggesting any changes to their medication regimen.
Choice C rationale:
Regular fluid intake is essential for maintaining hydration and replenishing lost fluids.
This advice directly addresses the issue of dehydration by encouraging the patient to consume fluids consistently. Drinking fluids every 1 to 2 hours can help restore fluid balance and prevent further complications.
It's a simple, actionable, and effective measure to address mild dehydration.
Choice D rationale:
While reducing sodium intake can be beneficial for some individuals with hypertension or other conditions, it's not the most relevant advice for addressing mild dehydration.
Sodium restriction might be appropriate in certain cases, but it doesn't directly address the immediate need to increase fluid intake.
The primary focus in this situation should be on replenishing fluids, not restricting sodium.
Correct Answer is D
Explanation
Rationale for Choice A:
Documentation is essential for communication and continuity of care, but it is not the most immediate priority in this situation.
The nurse should document the episode of vomiting, including the time, amount, and characteristics of the vomitus, as well as any associated symptoms or interventions.
However, auscultating lung sounds should be done first to assess for potential aspiration, which is a more urgent concern.
Rationale for Choice B:
Offering dry toast may be appropriate after the nurse has assessed for aspiration and determined that it is safe for the client to resume oral intake.
However, it is not the most important action at this time.
The nurse should first assess the client's respiratory status and address any potential complications.
Rationale for Choice C:
Rest is important for healing and recovery, but it is not the most immediate priority in this situation. The nurse should first assess the client's respiratory status and address any potential complications. Once the client is stable, the nurse can then encourage rest.
Rationale for Choice D:
Auscultating lung sounds is the most important action for the nurse to take after a client vomits.
This is because aspiration of vomitus is a serious complication that can lead to pneumonia, respiratory distress, and even death.
By auscultating lung sounds, the nurse can assess for signs of aspiration, such as crackles, wheezing, or diminished breath sounds.
If aspiration is suspected, the nurse can initiate appropriate interventions, such as suctioning, oxygen therapy, and positioning the client to facilitate drainage of secretions.
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