HESI LPN
Community Health HESI Study Guide
1. From January 1 to 15, 1996, there were 8 cases of Tetanus neonatorum in San Lazaro Hospital. There were two deaths. What is the case fatality ratio of this disease?
- A. 20%
- B. 30%
- C. 28%
- D. 25%
Correct answer: D
Rationale: The case fatality ratio is calculated as (deaths/cases) * 100. In this case, there were 2 deaths out of 8 cases. Therefore, the calculation is (2/8) * 100 = 25%. Choices A, B, and C are incorrect as they do not match the correct calculation.
2. During the care of a client with Legionnaire's disease, which finding would require the nurse's immediate attention?
- A. Pleuritic pain on inspiration
- B. Dry mucus membranes in the mouth
- C. A decrease in respiratory rate from 34 to 24
- D. Decrease in chest wall expansion
Correct answer: D
Rationale: A decrease in chest wall expansion suggests that the client may be experiencing a serious complication, such as worsening pneumonia or respiratory failure, requiring immediate medical attention. This finding indicates a potential decrease in lung function, which could lead to respiratory distress. Pleuritic pain on inspiration may be related to the disease process but does not indicate an immediate need for intervention. Dry mucus membranes in the mouth may require attention but are not as critical as a decrease in chest wall expansion. A decrease in respiratory rate could be concerning but is not as urgent as a decrease in chest wall expansion, which directly impacts respiratory function.
3. The nurse administers a booster dose of DTaP (diphtheria, tetanus, and pertussis) vaccine to an infant. Which level of prevention is the nurse implementing?
- A. Primary prevention.
- B. Tertiary prevention.
- C. Secondary prevention.
- D. Primary nursing.
Correct answer: A
Rationale: The correct answer is A: Primary prevention. Administering a booster dose of DTaP vaccine to an infant is an example of primary prevention. Primary prevention aims to prevent disease or injury before it occurs by preventing exposure to risk factors. Tertiary prevention focuses on reducing the impact of a disease or injury that has already occurred, while secondary prevention involves early detection and treatment to prevent the progression of disease. Choice B, tertiary prevention, is incorrect as it deals with managing the consequences of a disease rather than preventing it. Choice C, secondary prevention, is also incorrect as it focuses on early detection and treatment rather than vaccination to prevent the disease. Choice D, primary nursing, is unrelated to the level of prevention being implemented in this scenario.
4. What is a critical factor in determining community health?
- A. Number of hospitals
- B. Availability of healthcare services
- C. Socioeconomic status
- D. Population density
Correct answer: B
Rationale: The availability of healthcare services is a critical factor in determining community health. While the number of hospitals may contribute to healthcare accessibility, it is the overall availability of healthcare services that encompasses various factors including hospitals, clinics, healthcare providers, and resources. Socioeconomic status and population density are important determinants of health outcomes, but the direct availability of healthcare services plays a more immediate and direct role in promoting community health.
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:
- A. primary prevention
- B. secondary prevention
- C. tertiary prevention
- D. health education
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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