The nurse has conducted a cancer prevention community education program. In evaluating the participants understanding of the carcinogens, which statement indicates an accurate understanding?
Carcinogens are substances that contain cancerous cells.
Substances that change a cell so that it becomes cancerous are potential sources of cancer.
Environmental factors such as sunlight and chemicals can cause cancer to spread.
Carcinogens are in the environment and cannot be avoided.
The Correct Answer is B
A. Carcinogens are substances that contain cancerous cells:
This statement is incorrect. Carcinogens are substances that have the potential to cause cancer, but they do not necessarily contain cancerous cells themselves.
B. Substances that change a cell so that it becomes cancerous are potential sources of cancer:
This is the correct answer. Carcinogens are agents that can induce changes in the genetic material of cells, leading to the development of cancer. They can initiate or promote the process of carcinogenesis.
C. Environmental factors such as sunlight and chemicals can cause cancer to spread:
This statement is not accurate. Carcinogens can contribute to the initiation or promotion of cancer, but the spread of cancer (metastasis) involves complex biological processes and is not directly caused by environmental factors.
D. Carcinogens are in the environment and cannot be avoided:
This statement is not accurate. While carcinogens may be present in the environment, efforts can be made to minimize exposure and adopt preventive measures. Avoidance of known carcinogens and the promotion of a healthy lifestyle can contribute to cancer prevention.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Hyperaldosteronism causing an increased sodium reabsorption in renal tubules.
Hyperaldosteronism is characterized by an excess of aldosterone, a hormone that regulates sodium and water balance. In cirrhosis, however, sodium retention is often related to other mechanisms such as portal hypertension and hypoalbuminemia, rather than hyperaldosteronism.
B. Decreased renin-angiotensin response related to an increase in renal blood flow.
Cirrhosis is more commonly associated with an activated renin-angiotensin-aldosterone system, leading to increased sodium and water retention. The increased renin-angiotensin response is a compensatory mechanism to maintain perfusion in the setting of cirrhosis and does not contribute to decreased renal blood flow.
C. Decreased portacaval pressure with greater collateral circulation.
This statement is not accurate. In cirrhosis, there is typically increased portacaval pressure due to portal hypertension, which can lead to the development of collateral circulation. However, this does not explain the edema and ascites seen in cirrhosis.
D. Hypoalbuminemia that results in a decreased colloidal oncotic pressure.
This is the correct choice. In cirrhosis, liver damage leads to decreased synthesis of albumin. Albumin plays a crucial role in maintaining colloidal oncotic pressure, and when it is decreased (hypoalbuminemia), fluid is more likely to leak out of blood vessels, resulting in edema. The same mechanism contributes to the development of ascites in the abdominal cavity.
Correct Answer is C
Explanation
A. Increasing anxiety:
While emotional and psychological aspects are important in holistic care, immediate intervention is usually required for physiological concerns. Increasing anxiety may need attention, but it is not as urgent as addressing potential respiratory issues.
B. Inappropriate laughter:
Changes in emotional expression, such as inappropriate laughter, can occur in ALS due to involvement of upper motor neurons. While notable, it may not be as urgent as addressing respiratory concerns.
C. Weakened cough effort.
In ALS, respiratory muscles can become affected as the disease progresses, leading to respiratory complications. Weakened cough effort is concerning because it can indicate potential respiratory muscle weakness, which may lead to difficulty clearing secretions and an increased risk of respiratory compromise or infection.
D. Asymmetrical weakness:
Asymmetrical weakness is a common feature of ALS, but it may not necessarily warrant immediate intervention unless there are sudden changes or signs of acute distress. Respiratory symptoms, such as weakened cough effort, often require more immediate attention.
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