Nokea
A nurse reviews the electrolyte results of an assigned client and notes that the potassium level is 5.4 mEq/L. Which of the following would the nurse expect to note on the electrocardiogram as a result of the laboratory value?
- A. ST depression
- B. Inverted T wave
- C. Prominent U wave
- D. Tall peaked T waves
Correct Answer: D
Rationale: The correct answer is 'Tall peaked T waves.' Tall peaked T waves are characteristic ECG changes associated with hyperkalemia. In hyperkalemia, the elevated potassium levels affect the myocardium, leading to changes in the ECG. ST depression (Choice A) is more commonly associated with myocardial ischemia or infarction. Inverted T wave (Choice B) is seen in conditions like myocardial ischemia or CNS events. Prominent U wave (Choice C) is typically associated with hypokalemia or certain medications. Therefore, in this scenario, the nurse would expect to note tall peaked T waves on the electrocardiogram due to the elevated potassium level.
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A nurse is caring for a client who is unconscious and whose partner is their health care surrogate. The partner wishes to discontinue the client's feeding tube, but another family member tells the nurse that they want the client to continue receiving treatment. Which of the following responses should the nurse make?
- A. You should contact the provider about your wishes for your family member.
- B. We'll need to have the nursing supervisor review the client's advance directives.
- C. You should speak with the facility's ethics committee about your concerns.
- D. As the health care surrogate, the client's partner can make this decision.
Correct Answer: D
Rationale: The correct response is D because the health care surrogate, as designated by the client, has the legal authority to make healthcare decisions on behalf of the client when they are unable to do so. This authority includes decisions about treatment continuation or withdrawal. Option A is incorrect as the family member's wishes do not override the legal authority of the health care surrogate. Option B is not the most appropriate action in this situation as the advance directives are already clear by the designation of a health care surrogate. Option C is not necessary at this stage since the health care surrogate can make the decision without involving the ethics committee.
Serge, who has diabetes mellitus, is taking oral agents and is scheduled for a diagnostic test that requires him to be NPO. What is the best plan of action for the nurse regarding Serge's oral medications?
- A. Administer the oral agents immediately after the test.
- B. Notify the diagnostic department and request orders.
- C. Notify the physician and request orders.
- D. Administer the oral agents with a sip of water before the test.
Correct Answer: C
Rationale: The best plan of action for the nurse is to notify the physician and request orders regarding Serge's oral medications. By involving the physician, the nurse ensures that appropriate instructions are obtained, considering Serge's medical condition and the need for NPO status for the diagnostic test. Administering the medications without medical guidance (choice A) can be risky, as it may affect the test results. Notifying the diagnostic department (choice B) is not the most direct and appropriate action; the physician is the primary healthcare provider responsible for medication orders. Administering the medications with water before the test (choice D) is not advisable when the patient is supposed to be NPO, as it can interfere with the test requirements.
Which of the following chronic complications is associated with diabetes?
- A. Dizziness, dyspnea on exertion, and coronary artery disease.
- B. Retinopathy, neuropathy, and coronary artery disease.
- C. Leg ulcers, cerebral ischemic events, and pulmonary infarcts.
- D. Fatigue, nausea, vomiting, muscle weakness, and cardiac arrhythmias.
Correct Answer: B
Rationale: The correct answer is B. Diabetes is associated with chronic complications such as retinopathy, neuropathy, and coronary artery disease. Choice A includes symptoms rather than chronic complications of diabetes. Choice C lists conditions not typically associated with diabetes. Choice D describes symptoms that may occur in various medical conditions but are not specific chronic complications of diabetes.
The doctor has ordered 500 mg of a medication PO once a day. The tablets on hand are labeled as 1 tablet = 250 mg. How many tablets will you administer to your patient?
- A. 1 Tablet
- B. 2 Tablets
- C. 3 Tablets
- D. 4 Tablets
Correct Answer: B
Rationale: To calculate the number of tablets needed, divide the total dosage prescribed (500 mg) by the dosage per tablet (250 mg per tablet). 500 mg / 250 mg per tablet = 2 tablets. Therefore, the correct answer is 2 tablets. Choices A, C, and D are incorrect as they do not accurately reflect the correct calculation based on the provided information.
Which anatomic malformations are associated with Tetralogy of Fallot?
- A. A sub-aortic septal defect, an overriding aorta, left ventricular hypertrophy, and right ventricular outflow
- B. A sub-aortic septal defect, an overriding aorta, right ventricular hypertrophy, and left ventricular outflow
- C. A sub-aortic septal defect, an overriding aorta, pulmonary atresia, and right ventricular outflow
- D. A sub-aortic septal defect, an overriding aorta, right ventricular hypertrophy, and right ventricular outflow
Correct Answer: D
Rationale: Tetralogy of Fallot is characterized by a combination of four heart defects: a sub-aortic septal defect, an overriding aorta, right ventricular hypertrophy, and right ventricular outflow obstruction. This leads to mixing of oxygen-poor and oxygen-rich blood, resulting in cyanosis. Therefore, the correct answer is D. Choices A, B, and C are incorrect because they do not accurately describe the specific combination of anatomic malformations seen in Tetralogy of Fallot.