An infant weighing 16 pounds, 8 ounces is admitted to the pediatric unit with severe dehydration and requires intravenous (IV) fluid resuscitation. The nurse is preparing to administer a 0.9% normal saline IV fluid bolus of 6 mL/kg to infuse over 2 hours. The nurse should set the IV pump to deliver how many mL/hr? (Round to the nearest whole number)

Answer and Explanation

The Correct Answer is ["23"]

To calculate the IV fluid rate, first, convert the infant's weight from pounds and ounces to kilograms. There are 2.2 pounds in one kilogram. The infant weighs 16 pounds and 8 ounces, which is 16.5 pounds or approximately 7.5 kilograms when converted (16.5 pounds ÷ 2.2 pounds per kilogram). Next, multiply the infant's weight in kilograms by the prescribed amount of IV fluid, which is 6 mL/kg. This results in 45 mL (7.5 kg × 6 mL/kg). Since the fluid is to be infused over 2 hours, divide the total volume of 45 mL by 2 hours to find the rate per hour. The IV pump should be set to deliver approximately 22.5 mL/hr. After rounding to the nearest whole number, the IV pump should be set to deliver 23 mL/hr.

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Correct Answer is A

Explanation

A. An upper gastrointestinal series is commonly used to diagnose gastroesophageal reflux (GER), which can cause symptoms like spitting up and crying after feedings, leading to failure to thrive. This test helps visualize the esophagus, stomach, and duodenum for abnormalities.

B. A biopsy of the small intestine is typically done to diagnose celiac disease, which is less likely in this clinical scenario.

C. An ultrasound is used to diagnose pyloric stenosis, which presents with projectile vomiting and is less consistent with the described symptoms.

D. A lower gastrointestinal series is used to detect intestinal blockages, which are not suggested by the symptoms of spitting up and crying immediately after feeding.

A. When hearing a loud noise, the infant cries and extends both arms and legs. B. When stroking the outer edge of the sole of the infant's foot, the toes fan upward and out. C. When infant's head is turned to one side, extension of the same side arm and leg occurs. D. When stroking the cheek, the infant turns toward that side of stimulation.

Correct Answer is B

Explanation

A. The Moro reflex, where the infant cries and extends both arms and legs in response to a loud noise, typically disappears by 4-6 months of age and would not be expected at 8 months.

B. The Babinski reflex, where the toes fan upward and out when the outer edge of the sole is stroked, is normal in infants and usually disappears by 12-24 months of age.

C. The tonic neck reflex (fencing reflex) typically disappears around 4-6 months of age, so it would not be expected in an 8-month-old.

D. The rooting reflex, where the infant turns their head toward the side of stimulation when the cheek is stroked, typically disappears by 3-4 months of age.

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Naxlex Comprehensive Predictor Exams

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Correct Answer is A

Explanation

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Correct Answer is B

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