Nursing Elites

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. The nurse is caring for an acutely ill 10-year-old client. Which of the following assessments would require the nurse's immediate attention?

• A. Rapid bounding pulse
• B. Temperature of 38.5 degrees Celsius
• C. Profuse diaphoresis
• D. Slow, irregular respirations

Correct answer: D

Rationale: The correct answer is D, slow, irregular respirations. In an acutely ill child, this assessment can indicate impending respiratory failure or neurological compromise, necessitating immediate intervention. Rapid bounding pulse (choice A) may indicate tachycardia but is not as immediately concerning as compromised respirations. A temperature of 38.5 degrees Celsius (choice B) is elevated but may not be the most urgent concern unless accompanied by other symptoms. Profuse diaphoresis (choice C) can indicate increased sympathetic activity but is not as critical as respiratory compromise.

3. Which of the following is a major focus of tertiary prevention?

• A. Preventing the onset of disease
• B. Early detection and treatment
• C. Reducing the impact of an ongoing illness
• D. Health education

Correct answer: C

Rationale: The correct answer is C, 'Reducing the impact of an ongoing illness.' Tertiary prevention aims to minimize the effects of a disease or condition that is already established. Choices A, 'Preventing the onset of disease,' and B, 'Early detection and treatment,' are aspects of primary and secondary prevention, respectively. Choice D, 'Health education,' is more related to promoting awareness and knowledge rather than specifically focusing on reducing the impact of an ongoing illness.

4. A client with asthma has low-pitched wheezes present on the final half of exhalation. One hour later the client has high-pitched wheezes extending throughout exhalation. This change in assessment indicates to the nurse that the client

• A. Has increased airway obstruction
• B. Has improved airway obstruction
• C. Needs to be suctioned
• D. Exhibits hyperventilation

Correct answer: A

Rationale: The correct answer is A: 'Has increased airway obstruction.' High-pitched wheezes extending throughout exhalation indicate a worsening airway obstruction, leading to increased resistance in the airways. Low-pitched wheezes present on the final half of exhalation may suggest some level of obstruction, but the change to high-pitched wheezes throughout exhalation indicates a progression in the obstruction. Choice B is incorrect as the change in wheeze characteristics signifies deterioration rather than improvement. Choice C is incorrect as suctioning is not indicated based on the wheeze assessment findings. Choice D is incorrect as hyperventilation does not typically present with wheezes and is not supported by the information provided.

5. The healthcare provider would expect which eating disorder to have the greatest fluctuations in potassium?

• A. Binge eating disorder
• B. Anorexia nervosa
• C. Bulimia
• D. Purge syndrome

Correct answer: C

Rationale: The correct answer is C: Bulimia. Bulimia involves cycles of binge eating and purging, where individuals may induce vomiting or use laxatives and diuretics. These purging behaviors can lead to significant fluctuations in potassium levels due to electrolyte imbalances caused by excessive loss of potassium through vomiting and purging. In contrast, Binge eating disorder (A) does not involve purging behaviors, so it is less likely to cause significant potassium fluctuations. Anorexia nervosa (B) is characterized by severe food restriction rather than purging, leading to a different pattern of electrolyte imbalances. Purge syndrome (D) is not a recognized eating disorder and is not associated with specific patterns of potassium fluctuations seen in bulimia.

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