the term epidemiology is best defined as the study of
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Community Health HESI Practice Exam

1. The term 'epidemiology' is best defined as the study of:

Correct answer: B

Rationale: Epidemiology is the study of the distribution and determinants of health-related states in populations. Choice A is incorrect because epidemiology focuses on more than just causes but also on distribution and determinants. Choice C is incorrect as it specifically relates to public health and not just treatment and prevention. Choice D is incorrect as epidemiology is broader than just focusing on the healthcare system and its effectiveness.

2. A client is admitted with the diagnosis of myocardial infarction (MI). Which of the following lab values would be consistent with this diagnosis?

Correct answer: D

Rationale: The correct answer is D: Elevated creatinine phosphokinase (CPK). Elevated CPK levels indicate muscle damage, including damage to the cardiac muscle, which aligns with the diagnosis of myocardial infarction. Choice A, low serum albumin, is not directly related to myocardial infarction. Choice B, high serum cholesterol, is more associated with conditions like atherosclerosis rather than acute myocardial infarction. Choice C, abnormally low white blood cell count, is typically not a lab value associated with myocardial infarction; instead, it could suggest other conditions like infections or bone marrow issues.

3. An activity designed to diagnose and treat a disease or condition in its earliest stages, before it becomes full-blown, would be classified as:

Correct answer: B

Rationale: The correct answer is B, secondary prevention. Secondary prevention focuses on early diagnosis and intervention to prevent the progression of a disease or condition. This involves detecting and treating the illness in its early stages to reduce its impact. Choice A, primary prevention, aims to prevent the development of a disease or injury before it occurs by promoting healthy behaviors. Choice C, tertiary prevention, involves managing and improving the quality of life of individuals with established conditions to prevent complications and further deterioration. Choice D, health education, refers to providing information and promoting awareness about health issues to enable individuals to make informed decisions and adopt healthy behaviors.

4. What components should a nurse include when conducting a community health assessment?

Correct answer: C

Rationale: When conducting a community health assessment, it is essential to gather demographic data (such as age, gender, ethnicity), health status indicators (like prevalence of diseases, mortality rates), and information on community resources (such as healthcare facilities, social services). These components help in understanding the health needs of the community and planning appropriate interventions. Choices A, B, and D are not typically part of a community health assessment as they focus on individual health data or specific medical information rather than the broader population health perspective required for community assessments.

5. To succeed in her health education program, the PHN needs to be adept in:

Correct answer: D

Rationale: To excel in a health education program, a Public Health Nurse (PHN) must possess a combination of teaching-learning strategies to effectively impart knowledge, provide accurate information to ensure credibility, and communicate ideas effectively to engage and interact with the audience. Therefore, all of these skills are essential for a PHN to succeed in her health education program. Choices A, B, and C are integral components of a successful health education program, making option D the correct answer.

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