HESI LPN
Community Health HESI Exam
1. Which of the following measures the frequency of new cases of the phenomenon during a given period of time?
- A. prevalence rate
- B. proportionate mortality rate
- C. case fatality rate
- D. incidence rate
Correct answer: D
Rationale: The correct answer is D, incidence rate. Incidence rate measures the frequency of new cases of a phenomenon, providing important information about the risk of developing the condition. Prevalence rate (choice A) reflects both old and new cases, proportionate mortality rate (choice B) is the proportion of deaths due to a specific cause, and case fatality rate (choice C) measures the proportion of deaths among confirmed cases, not just new cases.
2. Postoperative orders for a client undergoing a mitral valve replacement include monitoring pulmonary artery pressure together with pulmonary capillary wedge pressure with a pulmonary artery catheter. This action by the nurse will assess
- A. Right ventricular pressure
- B. Left ventricular end-diastolic pressure
- C. Acid-Base balance
- D. Coronary artery stability
Correct answer: B
Rationale: The correct answer is B: Left ventricular end-diastolic pressure. Pulmonary capillary wedge pressure is used to assess left ventricular end-diastolic pressure. This measurement provides valuable information on the filling pressure of the left ventricle. Choices A, C, and D are incorrect because monitoring pulmonary capillary wedge pressure does not directly assess right ventricular pressure, acid-base balance, or coronary artery stability.
3. What is the measure of the number of new cases of a disease in a specific population during a certain time period called?
- A. Prevalence
- B. Incidence
- C. Mortality rate
- D. Morbidity rate
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.
4. The community health nurse has been following the care for an adolescent with a history of morbid obesity, asthma, hypertension, and is 22 weeks into a pregnancy. Which of these lab reports sent to the clinic needs to be called to the teen's healthcare provider within the next hour?
- A. Hemoglobin 11 g/dL and calcium 6 mg/dL
- B. Magnesium 0.8 mEq/L and creatinine 3 mg/dL
- C. Blood urea nitrogen 28 mg/dL and glucose 225 mg/dL
- D. Hematocrit 33% and platelets 200,000
Correct answer: B
Rationale: The correct answer is B. The low magnesium level and elevated creatinine suggest possible renal dysfunction, which is concerning, especially in a pregnant client with multiple risk factors such as morbid obesity, asthma, and hypertension. Immediate attention is needed to address the potential renal issues. The other choices do not indicate such urgent conditions. Hemoglobin and calcium levels in choice A are within acceptable ranges. Choice C shows elevated blood urea nitrogen and glucose levels, which may need monitoring but not immediate attention. Choice D's hematocrit and platelet levels are also within normal ranges and do not indicate an urgent issue.
5. The process by which an individual gains knowledge and skills to improve their health and well-being is known as:
- A. Health literacy
- B. Health education
- C. Health promotion
- D. Health behavior
Correct answer: B
Rationale: The correct answer is B: Health education. Health education is the process through which individuals acquire knowledge and skills to enhance their health and well-being. Health literacy (choice A) refers to the ability to understand and use health information, but it is not the same as the process of gaining knowledge and skills. Health promotion (choice C) involves advocating for health and implementing interventions to improve health outcomes, rather than the individual learning process. Health behavior (choice D) pertains to the actions individuals take regarding their health, not specifically the process of gaining knowledge and skills.
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