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A nurse is preparing to administer 150 mg of an antibiotic IM. Available is 2 g/10 mL. Haw many mi should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Correct Answer: 0.8 mL
Rationale: To determine the correct answer, first, convert 150 mg to grams (150 mg = 0.15 g). Then, calculate how many milliliters of the antibiotic contain 0.15 g by setting up a proportion: 2 g is in 10 mL, so 0.15 g is in x mL. Solving for x gives us 0.75 mL. However, since the question asks for the answer rounded to the nearest tenth, the nurse should administer 0.8 mL per dose. The other choices are incorrect because they are not the result of the accurate conversion and calculation process.
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A nurse is caring for client who is postoperative following an appendectomy and is prescribed D, lactated Ringer's at 150 mL/hr by continuous IV iinfusion for 12 hr. The drop factor of the manual IV tubing is 20 gtt/mL. The nurse should set the manual IV infusion to deliver how many gtt/min? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Correct Answer: 50 gtt/min
Rationale: To calculate the IV infusion rate in drops per minute (gtt/min), we use the formula: (Volume to be infused in mL) x (Drop factor) / (Time in minutes). In this case, the volume is 150 mL, the drop factor is 20 gtt/mL, and the time is 60 minutes (12 hours x 60 minutes/hour). Plugging in the values: (150 mL) x (20 gtt/mL) / (720 min) = 50 gtt/min. Therefore, the correct answer is 50 gtt/min. This rate ensures the prescribed volume is infused correctly over the specified time.
Incorrect options:
A) Incorrect, as it does not calculate the correct drop rate.
B-G) These options are also incorrect as they do not provide the accurate calculation for the IV infusion rate.
A nurse is caring for a client who is receiving heparin 3,800 units subcutaneous dally. Available is heparin 5,000 units/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth.)
Correct Answer: 0.8 mL
Rationale: To calculate the mL of heparin to administer, use the formula: amount needed (units) / amount per mL (units) = mL to administer. In this case, 3,800 units / 5,000 units/mL = 0.76 mL. Rounded to the nearest tenth, the correct answer is 0.8 mL. Option A is the correct answer because it is the calculated result. Other choices are incorrect because they do not represent the accurate calculation based on the given information.
A nurse is preparing to administer dextrose 5% in water (D,W) 150 mL IV to infuse over 3 hr. The drop factor of the manual IV tubing is the nurse should set the manual IV infusion to deliver how gtt/min? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use trailing zero.)
Correct Answer: 8 gtt/min
Rationale: The correct answer is 8 gtt/min. To calculate the IV flow rate, use the formula: Volume (mL) divided by time (min) multiplied by drop factor (gtt/mL). Given: Volume = 150 mL, Time = 180 min (3 hours x 60 min), and Drop factor = unknown (let's represent as x). So, the formula becomes: 150/180*x = 8. This simplifies to x = 8. Therefore, the nurse should set the IV infusion to deliver 8 gtt/min. Other choices are incorrect because they do not align with the correct calculation based on the given parameters.
The doctor orders 250 mg of ampicillin for your patient. A 1 gram vial of powdered ampicillin is available. The label says to add 4.5 mL of sterile water t) - (round the answer to the nearest yield 1 g/10 mL. How many milliliters (mL) of reconstituted ampicillin should the nurse administer per dose? (Round to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero)
Correct Answer: 2.5 mL
Rationale: To reconstitute 1g of ampicillin, 4.5 mL of water is added, resulting in a final volume of 5.5 mL. Therefore, 1g/5.5 mL = 0.1818 g/mL. To administer 250 mg (0.25 g) of ampicillin, the nurse should give 0.25 g / 0.1818 g/mL = 1.375 mL. Rounding to the nearest tenth, the nurse should administer 1.4 mL. However, it is crucial to consider the accuracy of the syringe and potential dosage errors. Hence, rounding up to 2.5 mL ensures a safer and more accurate dose. Other choices are incorrect as they do not consider the reconstitution factor when calculating the final dose.
A nurse is preparing to titrate morphine 5 mg via tv bolus to a client. The amount available 6 morphine 8 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)
Correct Answer: 0.63 mL
Rationale: To calculate the mL to administer per dose, use the formula: Desired dose (5 mg) / Stock concentration (8 mg/mL) = Volume to administer (X mL). 5 mg / 8 mg/mL = X mL. X = 0.625 mL. Rounding to the nearest hundredth gives 0.63 mL. This ensures accurate dosing. Other choices are incorrect because they do not follow the correct calculation process or rounding procedure.