Choice A rationale:
Starting an insulin drip at 0.1 u/kg/hr is a common treatment for diabetic ketoacidosis (DKA). The goal is to lower blood glucose levels while avoiding a rapid decrease that could lead to cerebral edema. Insulin infusions allow for precise control of the rate and can be adjusted as needed based on the patient’s response.
Choice B rationale:
Giving a long-acting insulin dose is not typically done during the acute treatment of DKA. The patient has already taken a dose of insulin glargine at home. Additional doses of long-acting insulin could potentially lead to hypoglycemia.
Choice C rationale:
Providing an oral medication that enhances insulin production would not be beneficial in this case. The patient has type 1 diabetes, which means her body does not produce insulin. Therefore, medications that stimulate insulin production would not be effective.
Choice D rationale:
Changing the intravenous fluid to 5% dextrose and 0.45% sodium chloride with 20 mEq potassium can help prevent hypoglycemia and hypokalemia, which are potential complications of DKA treatment. As blood glucose levels decrease with treatment, dextrose can help maintain appropriate glucose levels. Potassium is often depleted in DKA and needs to be replaced.
Choice E rationale:
Having the client drink as much as they can tolerate would not be appropriate at this time. The patient is currently experiencing nausea and vomiting, which could be exacerbated by oral fluid intake. Additionally, she is NPO (nothing by mouth), likely due to her unstable condition.
Choice F rationale:
Giving 1 L of 0.9% sodium chloride IV can help correct dehydration, which is common in DKA due to excessive urination caused by high blood glucose levels.
Choice G rationale:
Promoting the removal of electrolytes with a diuretic would not be beneficial in this case. The patient is likely already dehydrated and may have electrolyte imbalances due to DKA. Using a diuretic could exacerbate these issues.
Choice H rationale:
Giving a multivitamin is not typically part of the acute treatment for DKA. While overall nutritional status is important in managing diabetes, it would not address the immediate concerns of hyperglycemia and acidosis in DKA.
Choice I rationale:
Replacing potassium as needed is crucial in the treatment of DKA. Potassium levels can drop rapidly during treatment as insulin allows potassium to move back into cells. Low potassium (hypokalemia) can cause dangerous heart rhythms and muscle weakness.

The correct answer and explanation is:

c) Administer the medication and document the heart rate.

This is the action that the PN should take prior to giving digoxin to a 2-month-old infant whose heart rate is 120 beats/minute. Digoxin is a cardiac glycoside that is used to treat heart failure and arrhythmias. It has a narrow therapeutic range and can cause serious side effects such as bradycardia, hypotension, and toxicity. Therefore, it is important to monitor the client's vital signs before and after administering the medication. A normal heart rate for a 2-month-old infant is 100–190 beats/minute, so 120 beats/minute is within the normal range and does not indicate a need to hold the medication. The PN should administer the medication as prescribed and document the heart rate and any other relevant findings.

a) Administer the medication and alert the charge nurse.

This is not the action that the PN should take prior to giving digoxin to a 2-month-old infant whose heart rate is 120 beats/minute. Alerting the charge nurse is not necessary, as the heart rate is normal and does not indicate a problem with the medication or the client's condition. The PN should administer the medication as prescribed and document the heart rate and any other relevant findings.

b) Hold the medication and document cardiac assessment.

This is not the action that the PN should take prior to giving digoxin to a 2-month-old infant whose heart rate is 120 beats/minute. Holding the medication is not appropriate, as the heart rate is normal and does not indicate a contraindication or a risk of adverse effects from the medication. The PN should administer the medication as prescribed and document the heart rate and any other relevant findings.

d) Hold the medication and recheck the heart rate in 1 hour.

This is not the action that the PN should take prior to giving digoxin to a 2-month-old infant whose heart rate is 120 beats/minute. Holding the medication and rechecking the heart rate in 1 hour is not necessary, as the heart rate is normal and does not indicate a need for further evaluation or intervention. The PN should administer the medication as prescribed and document the heart rate and any other relevant findings.