A nurse is preparing to administer 40 mEq of potassium chloride in 45% sodium chloride (NaCl) 500 mL IV to infuse 10 mEq/hr. The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["125"]
Step 1: Determine the total time required to infuse 40 mEq at a rate of 10 mEq/hr.
40 mEq ÷ 10 mEq/hr = 4 hours
Result: 4 hours
Step 2: Determine the infusion rate in mL/hr.
500 mL ÷ 4 hours = 125 mL/hr
Result: 125 mL/hr
The nurse should set the IV pump to deliver 125 mL/hr.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A Reason: According to the rule of nines, each arm accounts for 9 percent of the TBSA, and each leg accounts for 18 percent of the TBSA. Therefore, if the client has burns on both sides of both arms and legs, the total percentage would be (9 + 9 + 18 + 18) = 54 percent. However, this choice is incorrect because it does not account for the fact that the rule of nines applies only to adults, not children. For children, the percentages are different because their body proportions are different from adults.
Choice B Reason: This choice is correct because it uses the modified rule of nines for children. According to this rule, each arm accounts for 9 percent of the TBSA, and each leg accounts for 13.5 percent of the TBSA. Therefore, if the client has burns on both sides of both arms and legs, the total percentage would be (9 + 9 + 13.5 + 13.5) = 45 percent. However, this is not the final answer because it does not account for the fact that the rule of nines applies only to partial-thickness burns, not full-thickness burns. For full-thickness burns, the percentages are halved because they do not contribute to fluid loss as much as partial-thickness burns. Therefore, if the client has full-thickness burns on both sides of both arms and legs, the final percentage would be (4.5 + 4.5 + 6.75 + 6.75) = 22.5 percent. However, this is still not the final answer because it does not account for the fact that the rule of nines applies only to first- and second-degree burns, not third-degree burns. For third-degree burns, the percentages are doubled because they require more intensive care and treatment than first- and second-degree burns. Therefore, if the client has third- degree burns on both sides of both arms and legs, the final percentage would be (9 + 9 + 13.5 + 13.5) = 45 percent.
Choice C Reason: This choice is incorrect because it uses the original rule of nines for adults, not children. It also does not account for the depth and degree of the burns.
Choice D Reason: This choice is incorrect because it uses a random percentage that does not correspond to any rule or calculation.
Correct Answer is ["B","D","E"]
Explanation
Choice A Reason: This choice is incorrect because headache is not a common manifestation of ARF. Headache may be caused by various factors such as dehydration, stress, sinusitis, or migraine, but it does not indicate ARF.
Choice B Reason: This choice is correct because severe dyspnea is a common manifestation of ARF. Dyspnea is a difficulty or discomfort in breathing that affects the oxygen delivery and carbon dioxide removal from the body. It may be caused by various factors such as lung disease, heart disease, anemia, or anxiety, but it indicates ARF when it is severe and persistent.
Choice C Reason: This choice is incorrect because nausea is not a common manifestation of ARF. Nausea is a sensation of uneasiness or discomfort in the stomach that may precede vomiting. It may be caused by various factors such as food poisoning, motion sickness, medication side effects, or pregnancy, but it does not indicate ARF.
Choice D Reason: This choice is correct because hypotension is a common manifestation of ARF. Hypotension is a condition in which the blood pressure is lower than normal (less than 90/60 mm Hg). It may be caused by various factors such as dehydration, blood loss, sepsis, or shock, but it indicates ARF when it is due to reduced cardiac output or vasodilation from hypoxia.
Choice E Reason: This choice is correct because decreased level of consciousness is a common manifestation of ARF. Decreased level of consciousness is a condition in which the person has impaired awareness or responsiveness to stimuli. It may be caused by various factors such as brain injury, stroke, seizure, or drug overdose, but it indicates ARF when it is due to increased carbon dioxide levels (hypercapnia) or decreased oxygen levels (hypoxemia) in the brain.
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