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. What is the measure of the number of new cases of a disease in a specific population during a certain time period called?

Correct answer: B

Rationale: The correct answer is B, Incidence. Incidence refers to the number of new cases of a disease in a specific population during a certain time period. Prevalence (choice A) refers to the total number of cases of a disease in a population at a specific point in time. Mortality rate (choice C) is the measure of the number of deaths in a particular population due to a specific cause. Morbidity rate (choice D) is a broader term that encompasses the incidence and prevalence of a disease in a population.

3. Which of these clients would the triage nurse request the healthcare provider to examine immediately?

Correct answer: A

Rationale: The correct answer is A. Audible wheezing and grunting in an infant indicate respiratory distress, which is a critical condition requiring immediate assessment and intervention by the healthcare provider. Choices B, C, and D do not present with immediate life-threatening conditions that require urgent evaluation. Soot on the face and shirt, second-degree burns on the hand, and singed hair, while concerning, do not pose an immediate threat to life compared to respiratory distress in an infant.

4. The nurse is evaluating the growth and development of a toddler with AIDS. The nurse would anticipate finding that the child has

Correct answer: D

Rationale: Children with AIDS often experience delays in achieving developmental milestones, affecting their overall growth and development. This delay can impact various areas of development, not limited to a specific aspect like musculoskeletal or speech development. While some children may achieve milestones at varying rates (choice A), the general trend is a delay in multiple milestones (choice D). Musculoskeletal development (choice B) and speech development (choice C) may be affected but are not as comprehensive as the delay in most developmental milestones.

5. 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.

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