Final answer:
Adenosine (Adenocard) is the medication that requires careful monitoring for systole.
Step-by-step explanation:
Of the medications listed, adenosine (Adenocard) requires careful monitoring for systole. Adenosine is a medication used to treat certain heart rhythm problems. It works by slowing down the electrical signals in the heart, which can briefly stop the heart's electrical activity. Therefore, monitoring the patient for systole is important to ensure that their heart is not stopping entirely.