Final answer:
The best client to assign to a new graduate who is orienting to the cardiac unit is a client with hypertension whose blood pressure is 230/118. This assignment would provide the new graduate with opportunities to learn about antihypertensive medications, monitoring blood pressure, and implementing lifestyle modifications.
Step-by-step explanation:
The best client to assign to a new graduate who is orienting to the cardiac unit would be option d. with hypertension whose blood pressure is 230/118.
Assigning a client with hypertension to a new graduate allows them to gain experience in managing high blood pressure, which is a common condition seen in cardiac patients. This assignment would provide the new graduate with opportunities to learn about antihypertensive medications, monitoring blood pressure, and implementing lifestyle modifications.
Additionally, hypertension is a stable condition compared to the other options. Clients with pneumonia with high serum potassium levels, clients with atrial fibrillation with infiltrated saline lock, and clients receiving heparin infusion with hematuria require more immediate and specialized care.