Final answer:
To prevent skin irritation and discoloration from iron injections, the Z-track method injection is recommended. For home treatment of systemic infections with antimicrobials, oral administration is convenient and effective.
Step-by-step explanation:
The technique that may prevent the extreme skin irritation and occasional discoloration caused by iron preparations is the Z-track method injection.
This method involves pulling the skin and subcutaneous tissue to the side before injecting into the muscle and then releasing it afterward.
This creates a zigzag path that seals the medication in the muscle, reducing the likelihood of it seeping into the subcutaneous tissue where it can cause irritation and discoloration.
For the administration of antimicrobial to treat a systemic infection that would be appropriate and convenient for home administration, the option oral administration would be preferred.
Oral antimicrobials can treat systemic infections effectively when the medication is appropriately absorbed from the gastrointestinal tract.