Which assessment finding requires nursing intervention prior to the administration of a prescribed dose of digoxin to an adult?
A.
Apical pulse rate of 50 beats/minute.
B.
Irregular apical pulse rhythm.
C.
Presence of a systolic heart murmur.
D.
Apical pulse heard best at the pulmonic site.
The correct answer and Explanation is :
The correct answer is A. Apical pulse rate of 50 beats/minute.
Explanation
Digoxin is a medication used to treat various heart conditions, including atrial fibrillation and heart failure. It works by increasing the force of cardiac contractions and slowing down the heart rate. However, it also has a narrow therapeutic window, meaning the difference between a therapeutic dose and a toxic dose is small. Therefore, careful monitoring is crucial to avoid adverse effects.
Apical Pulse Rate of 50 Beats/Minute: Before administering digoxin, it is essential to assess the patient’s apical pulse. The standard practice is to check the apical pulse for one full minute. Digoxin can lower the heart rate (bradycardia) because it enhances vagal tone. A pulse rate below 60 beats per minute is generally considered bradycardia and is a warning sign that the drug may cause further slowing of the heart rate. For this reason, if the apical pulse is 50 beats per minute, the medication should be withheld, and the physician or healthcare provider should be notified. This precaution helps prevent the risk of digoxin toxicity and worsening of bradycardia.
Irregular Apical Pulse Rhythm: An irregular rhythm could indicate atrial fibrillation or other arrhythmias. While this might be a sign of an underlying condition for which digoxin is prescribed, it doesn’t necessarily require withholding the medication. However, it does warrant careful monitoring and possibly adjustments in treatment.
Presence of a Systolic Heart Murmur: A systolic heart murmur can be related to various cardiac conditions but is not a direct contraindication for administering digoxin. It is more important to monitor for symptoms of heart failure or arrhythmias.
Apical Pulse Heard Best at the Pulmonic Site: This finding might indicate an abnormal position of the heart or a technique issue in assessing the pulse. It does not, by itself, necessitate withholding digoxin but requires proper assessment techniques to ensure accurate measurements.
In summary, the most critical finding that requires nursing intervention before administering digoxin is an apical pulse rate of 50 beats per minute. This finding indicates potential bradycardia, which could be exacerbated by digoxin, making it a key factor to address before proceeding with the medication.