A nurse is preparing to administer ampicillin 500 mg IM every 6 hr. Available is ampicillin 500 mg vial. The package insert instructs adding 1.8 mL of sterile water to yield ampicillin 250 mg/mL. How many mL should the nurse administer per dose?
(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 ["2"]
To calculate the amount of ampicillin the nurse should administer per dose in milliliters (mL) for a 500 mg IM dose, we can use the following steps:
Given:
Ampicillin dose: 500 mg
Available concentration after reconstitution: 250 mg/mL
Volume of sterile water to be added: 1.8 mL
Step 1: Calculate the amount of ampicillin to be administered per dose in mL
First, we need to reconstitute the ampicillin vial to yield the desired concentration of 250 mg/mL.
The concentration after reconstitution is 250 mg/mL, and the total dose required is 500 mg. Therefore, the nurse needs to administer:
Volume = Ampicillin dose / Concentration
Volume = 500 mg / 250 mg/mL
Volume = 2 mL
Rounding to the nearest whole number:
Volume = 2 mL
Therefore, the nurse should administer 2 mL of the reconstituted ampicillin solution per dose.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: This choice is incorrect because there is no need to recheck the heart rate in one hour before giving the digoxin. The client's apical heart rate is within the normal range (60 to 100 beats per minute) and does not indicate bradycardia (slow heart rate), which is a sign of digoxin toxicity. The nurse should check the apical heart rate for one full minute before giving the digoxin and withhold the dose if the heart rate is below 60 beats per minute.
Choice B reason: This choice is correct because the client's digoxin level is within the therapeutic range (0.5 to 2.0 ng/mL) and does not indicate digoxin toxicity or underdosing. The client's vital signs and labs are also stable and do not indicate any adverse effects of digoxin. Digoxin is a cardiac glycoside that improves the contractility and efficiency of the heart and helps to control the heart rate and rhythm in clients with heart failure. The nurse should give the digoxin as ordered and monitor the client's response and digoxin level.
Choice C reason: This choice is incorrect because there is no indication for a chest x-ray for this client. A chest x-ray is a diagnostic test that can show the size and shape of the heart and lungs and detect any abnormalities, such as fluid accumulation, infection, or tumors. The client's symptoms and labs do not suggest any pulmonary complications or worsening of heart failure that would require a chest x-ray. The nurse should follow the provider's orders and protocols for chest x-ray indications.
Choice D reason: This choice is incorrect because there is no reason to hold the digoxin and call the MD for this client. The client's digoxin level is not too high or too low and does not require dose adjustment or discontinuation. The client's vital signs and labs are also normal and do not indicate any signs of digoxin toxicity or adverse effects. Holding the digoxin could cause the client's heart failure to worsen or cause arrhythmias. The nurse should only hold the digoxin and call the MD if the client has signs of digoxin toxicity, such as nausea, vomiting, visual disturbances, confusion, or bradycardia. .
Correct Answer is D
Explanation
Choice A reason: This choice is incorrect because insulin is not commonly given to all hospitalized clients. Insulin is a hormone that lowers blood sugar levels in the body. It is only given to clients who have diabetes or other conditions that cause high blood sugar, such as pancreatitis, sepsis, or steroid therapy. The nurse should explain the indication and purpose of insulin to the client and not make false or misleading statements.
Choice B reason: This choice is incorrect because the client did not likely develop diabetes prior to hospitalization, but are just now being diagnosed. Diabetes is a chronic condition where the body either does not produce enough insulin or does not use it properly, resulting in high blood sugar levels. Diabetes can be diagnosed by measuring the blood sugar levels, the hemoglobin A1c levels, or the oral glucose tolerance test. The nurse should not assume or imply that the client has diabetes without proper testing and confirmation.
Choice C reason: This choice is incorrect because the client did not develop type 1 diabetes and will not need insulin for the rest of their life. Type 1 diabetes is an autoimmune condition where the body destroys the insulin-producing cells in the pancreas, leading to a complete lack of insulin. Type 1 diabetes usually develops in childhood or adolescence, and requires lifelong insulin therapy. The nurse should not diagnose or predict the client's condition without evidence or authority.
Choice D reason: This choice is correct because glucocorticoid steroid medications can cause temporary hyperglycemia. Glucocorticoids are anti-inflammatory drugs that suppress the immune system and reduce inflammation. They are used to treat conditions such as multiple sclerosis, asthma, rheumatoid arthritis, and allergic reactions. However, they can also increase the blood sugar levels by stimulating the liver to produce more glucose and reducing the sensitivity of the cells to insulin. The nurse should inform the client that the insulin is needed to control the blood sugar levels while they are on steroid therapy, and that the insulin dose may be adjusted or discontinued when the steroids are tapered or stopped.
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