The nurse is to infuse 1 liter of D10W over 8 hours. What rate will the nurse set the iv pump for??
625 ml/hr
125 ml/hr
250 ml/hr
125 gtt/min
The Correct Answer is B
A. 625 ml/hr: This rate would administer 625 ml per hour, which is too fast for 1 liter over 8 hours.
B. 125 ml/hr: To administer 1 liter (1000 ml) over 8 hours, divide 1000 ml by 8 hours: 1000 ml ÷ 8 hours = 125 ml/hr.
C. 250 ml/hr: This rate would administer 250 ml per hour, which would result in the infusion being completed in 4 hours, not 8.
D. 125 gtt/min: This option is incorrect because it gives a rate in drops per minute, not milliliters per hour.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. 1.25ml: The dosage of 20mg/5ml means 1ml contains 4mg. To get 25mg, you need more than 1.25ml.
B. 6.25ml: Since 20 mg is in 5ml, to administer 25mg, you can use the following calculation:
25mg*
= 6.25ml
C. 6.3mg: This is incorrect because the dosage needed is 25mg, not 6.3mg.
D. 6mg: The prescribed dose is 25mg, not 6mg.
Correct Answer is D
Explanation
A. Lubricates the intestinal wall and softens stool: This describes the action of lubricant laxatives, such as mineral oil, not stimulant laxatives.
B. Draws water into the bowel to facilitate the passage of feces: This describes osmotic laxatives, such as polyethylene glycol or lactulose.
C. Increases bulk and stimulates peristalsis: This describes bulk-forming laxatives, like psyllium, which absorb water and increase stool size.
D. Irritates the intestine directly, promoting peristalsis and evacuation: This is the correct mechanism for stimulant laxatives, such as bisacodyl and senna. They stimulate the nerve endings in the intestinal lining, leading to increased bowel movement activity.
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