the term epidemiology is best defined as the study of

HESI LPN

Community Health HESI Practice Exam

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

A. The causes of disease
B. The distribution and determinants of health-related states in populations
C. The treatment and prevention of disease
D. The healthcare system and its effectiveness

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. Which of the following statements about CHN is wrong?

A. CHN synthesizes public health with nursing
B. CHN emphasizes health
C. Promoting clients' autonomy is a responsibility of public nursing
D. CHN makes a unique contribution to health care not by the nature of its practice but where it is practiced

Correct answer: D

Rationale: The statement in option D is incorrect. The unique contribution of Community Health Nursing (CHN) is not only where it is practiced but also by the nature of its practice. CHN's distinct value lies in its approach to care delivery, focusing on preventive care, health promotion, and addressing the needs of specific communities. Options A and B are correct as CHN involves synthesizing public health principles with nursing practice and emphasizes holistic health. Option C is incorrect as promoting clients' autonomy is a fundamental aspect of community health nursing, respecting individuals' rights to make decisions about their health.

3. BCG vaccine is supplied in:

A. freeze-dried form in a sealed glass ampule
B. liquid form in a sealed glass ampule
C. liquid form in a vial
D. both 2 and 3

Correct answer: A

Rationale: The correct answer is A. BCG vaccine is commonly supplied in freeze-dried form, not in liquid form. Therefore, choices B and C are incorrect. Option D is also incorrect as the vaccine is not supplied in liquid form in a glass ampule.

4. Which of the following statements about TB treatment is INCORRECT?

A. Combination of 3-4 anti-TB drugs is the treatment of choice
B. Single drug therapy is appropriate
C. Treatment renders patients non-infectious and cured
D. Tuberculosis is a curable disease

Correct answer: B

Rationale: The correct answer is B. Single drug therapy is not appropriate for TB due to the risk of developing resistance. The most effective approach to TB treatment is a combination of 3-4 anti-TB drugs. This combination helps to prevent the development of drug resistance and improve treatment outcomes. Choice C is correct as TB treatment, when completed successfully, renders patients non-infectious and cured. Choice D is also correct as tuberculosis is indeed a curable disease with appropriate treatment. Therefore, the incorrect statement is B.

5. A community health RN believes that immunization rates in a lower socioeconomic section of the city are probably below the target set by the state health department. What action should the RN take FIRST to intervene with this health problem?

A. Take a health history of the members of the community
B. Initiate an immunization program for the community
C. Review current epidemiological population data that might document a low immunization rate
D. Refer all clients to the local health department

Correct answer: C

Rationale: The correct first action for the community health RN to take in this situation is to review current epidemiological population data that might document a low immunization rate. By doing so, the RN can gather evidence to support further intervention strategies. Option A is incorrect because taking a health history would not provide immediate data on immunization rates in the community. Option B is incorrect as initiating an immunization program without confirming the actual immunization rates may not address the specific needs of the community. Option D is incorrect as a blanket referral without assessing the situation may not be the most effective first step.