epidemiology is directly concerned with which of the following
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Community Health HESI Study Guide

1. Epidemiology is directly concerned with which of the following?

Correct answer: A

Rationale: Corrected Rationale: Epidemiology is the study of the distribution and determinants of health-related states or events in specified populations and the application of this study to the control of health problems. It focuses on identifying and understanding the factors that influence the occurrence and distribution of diseases, defects, disability, or death of groups of individuals. Therefore, the correct answer is A. Choice B, vital health statistics, is not the primary focus of epidemiology. While vital health statistics may be used in epidemiological studies, it is not the direct concern of epidemiology. Choice C, environmental sanitation, although important for public health, is not the main focus of epidemiology. Epidemiology is more concerned with the factors influencing disease occurrence and distribution, rather than environmental sanitation. Choice D, treatment of a communicable disease, is more related to clinical medicine rather than epidemiology. Epidemiology is more focused on prevention, control, and understanding the patterns and causes of diseases rather than their treatment.

2. The nurse is assigned to a newly delivered woman with HIV/AIDS. The student asks the nurse about how it is determined that a person has AIDS other than a positive HIV test. The nurse responds:

Correct answer: C

Rationale: The correct answer is C. A CD4 count less than 200 cells/mm³ is a diagnostic criterion for AIDS. Choices A, B, and D are incorrect. Choice A is vague and does not reflect the diagnostic criteria for AIDS. Choice B is not accurate, as the presence of opportunistic infections, not their absence, is indicative of AIDS. Choice D is unrelated to the diagnosis of AIDS in adults.

3. Care provided by specialists in health facilities such as medical centers, regional, and provincial hospitals falls under which level of care?

Correct answer: C

Rationale: Tertiary care is the correct answer because it involves specialized care provided by medical centers and regional or provincial hospitals. Primary care (Choice B) refers to basic healthcare services usually delivered by general practitioners, nurses, and other healthcare professionals. Secondary care (Choice A) involves specialized services provided by medical specialists and other health professionals who generally do not have first contact with patients. Intermediate care (Choice D) is not a recognized level of care in the typical healthcare system hierarchy; it may cause confusion as it's not a standard term used to describe levels of care.

4. When designing a home health care program for disabled children, which factor should be considered when assessing reimbursement for services from private insurance companies?

Correct answer: D

Rationale: When assessing reimbursement for services from private insurance companies, approval by the network healthcare provider is crucial. This approval ensures that the services provided are within the approved network, allowing for reimbursement. Choices A, B, and C are not directly related to the reimbursement process by private insurance companies. While greater access to any healthcare provider, allowance for early discharge, and concern for the quality of care are important considerations when designing a home health care program, they do not specifically impact the reimbursement process from private insurance companies.

5. A 67-year-old client is admitted with substernal chest pain with radiation to the jaw. His admitting diagnosis is Acute Myocardial Infarction (MI). The priority nursing diagnosis for this client during the immediate 24 hours is

Correct answer: C

Rationale: The correct answer is C: Impaired gas exchange. In a client with an acute myocardial infarction, impaired gas exchange is a priority nursing diagnosis due to compromised heart function, which affects oxygenated blood circulation. Close monitoring and interventions are crucial to ensure adequate oxygenation. Choices A, B, and D are incorrect: A) Constipation related to immobility is not the priority in this acute situation; B) High risk for infection is not the immediate concern related to the client's primary diagnosis; D) Fluid volume deficit, while important, is not the priority compared to addressing impaired gas exchange in acute MI.

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