Nursing Elites

1. Which of the following is reflected in an ECG due to hypokalemia?

• A. Tall T waves and Pathologic Q wave
• B. Widening QRS Complex and U wave
• C. None of the above
• D. Both A and B

Correct answer: B

Rationale: Hypokalemia, a condition characterized by low levels of potassium in the blood, is reflected in an ECG by a widening QRS Complex and a U wave. This is because potassium plays a key role in the electrical activity of the heart, and its deficiency can lead to abnormalities in the heart's rhythm as represented by these specific changes on the ECG. Choice A is incorrect as tall T waves and pathologic Q waves are more commonly associated with hyperkalemia or myocardial infarction, respectively, rather than hypokalemia. Choices C and D are also incorrect as they do not accurately reflect the ECG changes caused by hypokalemia.

2. What physiologic role does magnesium play in the body?

• A. Blood clotting, transmission of nerve impulses, muscle contraction and relaxation
• B. Calcium homeostasis, structural integrity of heart muscle
• C. No known metabolic function, caries-preventing properties
• D. ATP energy release; metabolism of fats, carbohydrates, proteins; regulates acid-base balance

Correct answer: B

Rationale: The correct answer is B. Magnesium plays an important role in maintaining calcium homeostasis and preventing skeletal abnormalities. It is involved in more than 300 enzymatic reactions, including energy metabolism, insulin activity, and glucose use. Magnesium is vital to the structural integrity of heart muscle and other muscles and nerves. While magnesium does play a role in blood clotting, nerve impulses, muscle contraction, relaxation, ATP energy release, and metabolism of fats, carbohydrates, proteins, the primary physiologic role of magnesium in the body is related to calcium homeostasis and maintaining the structural integrity of the heart muscle. Choice A is incorrect because it includes functions of magnesium, but they are not its primary physiologic role. Choice C is incorrect as magnesium has several known metabolic functions. Choice D is incorrect because although magnesium is involved in ATP energy release and metabolism, its primary role is related to calcium homeostasis and structural integrity of muscle.

3. Which statement by a client indicates a need for further teaching about food safety?

• A. I will use the food before the expiration date listed on the package.
• B. I will wash my strawberries before I eat them.
• C. I will drink unpasteurized milk as it has many gut-healthy probiotics.
• D. I will wash my hands after I prepare raw chicken.

Correct answer: C

Rationale: The correct answer is C because drinking unpasteurized milk can contain harmful bacteria, which poses a risk to food safety. Choice A is correct as it emphasizes using food before the expiration date. Choice B is also correct as washing fruits before consumption is a good food safety practice. Choice D is correct as well since washing hands after handling raw chicken is crucial to prevent cross-contamination. Therefore, choice C is the only statement that indicates a need for further teaching on food safety.

4. Which list contains fatty acids that reduce cardiovascular disease risk?

• A. omega 3, trans fatty acids, saturated fatty acids
• B. EPA and DHA
• C. omega 6, omega 3, partially hydrogenated oil
• D. omega 3, EPA, saturated fatty acids

Correct answer: B

Rationale: EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid), both omega-3 fatty acids, are known to reduce the risk of cardiovascular disease.

5. A nurse is caring for a client who has a body mass index (BMI) of 30. Four weeks after nutritional counseling, which of the following evaluation findings indicates the plan of care was followed?

• A. BMI of 25
• B. Weight gain of 1.8 kg
• C. BMI of 33
• D. Weight loss of 2.7 kg

Correct answer: D

Rationale: A weight loss of 2.7 kg in four weeks indicates effective adherence to a nutritional plan aimed at reducing body mass index (BMI), moving towards a healthier weight. Choices A, B, and C are incorrect because a decrease in weight, as shown in choice D, is the desired outcome when managing a client with a BMI of 30 to reach a healthier range.

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