Community Health HESI Practice Exam

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.

Correct Answer: B

Rationale: Community health nursing primarily focuses on preventive measures and promoting overall health within a community. Choice A is incorrect as treatment is not the main emphasis. Choice C is incorrect as identification and assessment are steps that may be involved but not the main focus. Choice D is incorrect as it refers to the illness end rather than the preventive end of the wellness-illness continuum.

Correct Answer: B

Rationale: Fasting for at least 12 hours is necessary before a cholesterol and triglyceride test to ensure accurate results by avoiding fluctuations that can occur after eating. Choice A is incorrect because a fat-free diet is not required; fasting is. Choice C is incorrect as it suggests having the test right after eating, which can affect the results. Choice D is incorrect as there is no need to stay at the laboratory for 2 blood samples unless specifically instructed by a healthcare provider.

Correct Answer: C

Rationale: The correct answer is C, Semi-Fowler's. This position helps to reduce intracranial pressure by promoting venous drainage from the head while maintaining adequate oxygenation. Option A, Trendelenburg position, is incorrect as it involves placing the patient with the head lower than the body, which can increase intracranial pressure. Option B, Prone position, is also incorrect as it involves lying on the stomach, which can further elevate intracranial pressure. Option D, Side-lying with head flat, does not provide the same benefits as the Semi-Fowler's position in terms of promoting venous drainage and maintaining oxygenation in a client with increased intracranial pressure.

Correct Answer: B

Rationale: In situations where a client is trembling and fearful upon admission to a psychiatric unit, it is essential to prioritize building trust and reducing anxiety. By introducing oneself and accompanying the client to their room, the nurse can establish a therapeutic relationship, provide a sense of security, and address the client's immediate emotional needs. Choices A, C, and D are not the most appropriate initial responses as they do not directly address the client's emotional state or focus on establishing a supportive relationship.