This problem will have 4 answers. The physician orders Ancef 400mg IV every 8 hours for a child weighing 44 lbs. You have on hand Ancef 330 mg/mL. The recommended daily IV dosage for a child is 75 mg/kg/day.

1. What is the child's weight in kg? 

a) Chloride 100 mEq/L: A chloride level of 100 mEq/L is within the normal range (98-107 mEq/L) and would not be concerning in this context.

b) Sodium 138 mEq/L: A sodium level of 138 mEq/L is within the normal range (135-145 mEq/L) and would not be concerning in this context.

c) Potassium 4.1 mEq/L: A potassium level of 4.1 mEq/L is within the normal range (3.5-5.0 mEq/L) and would not be concerning in this context.

d) Magnesium 1.0 mEq/L: A magnesium level of 1.0 mEq/L is low (normal range: 1.5-2.5 mEq/L), and low magnesium can cause neuromuscular symptoms such as tremors. This would be a concerning result in the context of the patient's hand and face tremors.

a) Auscultate breath sounds: While auscultating breath sounds may reveal signs of aspiration (e.g., crackles), stopping the feedings is the immediate priority to prevent further aspiration and reduce the risk of complications like aspiration pneumonia.

b) Stop the feedings: The highest priority is to stop the enteral feedings immediately to prevent further aspiration and potential damage to the lungs, followed by further assessments.

c) Obtain a chest x-ray: A chest x-ray can confirm the presence of aspiration or pneumonia but is not the immediate priority. Stopping the feedings is more urgent.

d) Initiate antibiotic therapy: Antibiotics may be needed if aspiration pneumonia is suspected, but they should not be the first intervention. Stopping the feedings and assessing the patient should be done first.