Final answer:
Before administering digoxin, it is crucial to check the apical pulse. This vital sign accurately reflects cardiac function, which digoxin can significantly impact. The medication may need to be withheld if the apical pulse is below 60 or irregular.
Step-by-step explanation:
Before administering digoxin, it is important to check the apical pulse (A). The apical pulse is a central pulse that is located at the apex of the heart. It is an important vital sign in assessing cardiac function, especially when giving medications like digoxin that can affect the heart's rhythm and force of contraction. The reason why apical pulse should be checked rather than radial pulse or blood pressure is due to its accuracy in reflecting the heartbeat. If the pulse is less than 60 beats per minute, or if it is irregular, the administration of digoxin may need to be withheld and health care providers should be notified.