A nurse is preparing to start an IV infusion of lactated Ringer’s for a client who sustained a burn injury.
The client is prescribed 5,200 mL of fluid over the first 24 hr. How many mL/hr should the nurse set the pump to infuse for the first 8 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 ["325"]
Step 1 is to determine the total volume of fluid to be infused in the first 8 hours. According to the Parkland formula for fluid resuscitation, half of the prescribed volume is administered in the first 8 hours. Thus:
Total fluid for the first 8 hours = 5,200 mL ÷ 2 = 2,600 mL.
Step 2 is to calculate the infusion rate in mL/hr for the first 8 hours. Divide the total volume for the first 8 hours by the total time in hours:
Infusion rate = 2,600 mL ÷ 8 hr = 325 mL/hr.
Final calculated answer: 325 mL/hr.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
Lithotripsy, which uses shock waves to break up stones, is not part of an oral cholangiogram. An oral cholangiogram involves the use of a contrast dye to visualize the gallbladder and bile ducts on X-ray.
Choice B rationale
An endoscopic procedure, such as an endoscopic retrograde cholangiopancreatography (ERCP), involves inserting a camera down the throat. However, an oral cholangiogram is a non- invasive imaging test that uses contrast dye.
Choice C rationale
Correct. An oral cholangiogram involves the ingestion of a contrast dye that helps visualize the gallbladder and bile ducts on X-ray.
Choice D rationale
Medications to dissolve gallstones are not used in an oral cholangiogram. This procedure is purely diagnostic and involves the use of contrast dye to visualize the gallbladder and bile ducts.
Correct Answer is C
Explanation
Choice A rationale
A mesh-like device within the catheter that springs open is characteristic of a stent, not a balloon-tipped catheter used in PTCA. Stents are often used in conjunction with angioplasty to keep the artery open after the balloon has compressed the plaque.
Choice B rationale
While catheters can be used to take pressure measurements, this is not the primary function of the balloon-tipped catheter in PTCA. The main purpose of the balloon-tipped catheter is to compress the plaque against the artery wall to improve blood flow.
Choice C rationale
The balloon-tipped catheter in PTCA is used to compress the plaque against the coronary blood vessel wall. This process, known as balloon angioplasty, helps to widen the artery and improve blood flow to the heart.
Choice D rationale
Cutting away plaque with an embedded blade is a description of atherectomy, not PTCA. Atherectomy involves a different type of catheter designed to remove plaque from the artery wall.
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