Carcinogens are factors related to the formation of various malignancies. Which factor has the greatest impact on the development of all cancers?
chemical agents
environmental factors
viruses
defective genes
The Correct Answer is B
A. Chemical agents: Chemical agents (e.g., tobacco smoke, asbestos) are significant carcinogens but are not the most influential across all types of cancer.
B. Environmental factors: Environmental factors, including exposure to radiation, chemicals, and lifestyle choices, have a broad impact on cancer development. This is the most comprehensive factor, as it encompasses various elements that contribute to cancer risk.
C. Viruses: Certain viruses (e.g., HPV, Hepatitis B) are linked to specific cancers, but they are not the primary cause of most cancers.
D. Defective genes: Genetic mutations play a critical role in cancer development, but they are often triggered by environmental factors, making environmental factors the most significant overall.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Normal pessimism of the elderly: This statement downplays the seriousness of the client’s feelings. Although some elderly individuals may experience sadness, these statements suggest a deeper issue that should not be considered normal.
B. A cry for sympathy: This response dismisses the client's feelings as attention-seeking, which could lead to missing a serious issue, such as depression or suicidal ideation.
C. Normal grieving: While grief can lead to feelings of sadness, the statements indicate a broader sense of hopelessness and worthlessness, which goes beyond normal grieving.
D. Evidence of high suicide potential: The client’s statements suggest feelings of hopelessness and despair, which are red flags for suicide risk, especially in elderly clients. This requires immediate assessment and intervention.
Correct Answer is D
Explanation
A. Hypokalemia or hyponatremia: While electrolyte imbalances are important, they are not the most immediate threat in the context of a heroin overdose.
B. Acute gastrointestinal bleed: An acute gastrointestinal bleed is not a primary concern with heroin overdose. It is not the most acute threat in this scenario.
C. Increased intracranial pressure: Increased intracranial pressure is not directly related to heroin overdose. The most pressing issue is related to the effects of the overdose.
D. Respiratory depression: Heroin overdose commonly leads to respiratory depression, which is the most immediate and life-threatening condition. Addressing respiratory depression is crucial for patient survival.
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