The nurse is caring for a client receiving Magnesium Sulphate. The loading dose has already been given and the maintenance dose order reads 1g/hr. The drug is supplied 20g/500ml
Solve the maintenance dose to be given in ml/hr
25mg/hr
25g/hr
250ml/hr
25ml/hr
The Correct Answer is D
A. 25mg/hr is incorrect. The question asks for the volume in mL/hr, not the dose in milligrams per hour.
B. 25g/hr is incorrect. The ordered dose is 1g/hr, not 25g/hr.
C. 250mL/hr would provide a much higher dose than ordered, based on the concentration.
D. 25mL/hr is correct. This is the calculated volume to deliver the 1g/hr maintenance dose based on the supplied concentration. Volume= Ordered dose/ Concentration
Determine the concentration of the solution: The supplied concentration is 20g/500mL, which simplifies to 0.04g/mL (since 20g = 20,000mg and 500mL = 500mL).
Determine the ordered dose: The order is for a maintenance dose of 1g/hr.
Calculate the volume to be infused: 1/0.04= 25mL/hr
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Using a radiant warmer to transport a newborn helps prevent radiant heat loss, not convection. Radiant heat loss occurs when heat transfers from the newborn to cooler surfaces not in direct contact, such as walls or windows.
B. Placing a cap on a newborn's head is effective in reducing evaporative and radiant heat loss from the head, but it does not specifically address heat loss through air movement (convection).
C. Placing the newborn skin-to-skin with the mother reduces conductive heat loss by providing a warm surface (the mother's skin), not convection.
D. Closing doors and windows to prevent draft helps reduce convective heat loss, which occurs when air currents pass over the newborn's skin and carry away body heat. Eliminating drafts minimizes this form of heat loss, making this the correct intervention for convection.
Correct Answer is B
Explanation
A. A score of 7 would be given if the infant’s heart rate was 100, but with less than optimal responses for color, muscle tone, and respiratory effort. However, this baby demonstrates strong responses in all categories.
B. The Apgar score is calculated based on five criteria: heart rate, respiratory effort, muscle tone, reflex irritability, and color. The infant in the scenario has:
Heart rate of 100 (score 2)
Pink body and blue hands (score 1 for color—because the baby is not fully pink, indicating some cyanosis in the extremities)
Active motion (score 2 for muscle tone)
Strong lusty cry (score 2 for reflex irritability/responsiveness to stimuli)
Good respirations (score 2)
Adding these scores (2 + 1 + 2 + 2 + 2), the total is 8.
C. A score of 5 would indicate more significant distress, with poor color, respiratory effort, and muscle tone. This infant is showing good signs of adaptation.
D. A score of 9 would indicate that the baby has no signs of cyanosis and perfect responses in all categories, but since the infant has blue hands, it scores slightly lower (1 point less for color).
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