Final answer:
For manual defibrillation of a patient 8 years old or older, the treatment plan is to start with 2 Joules/kg and escalate as needed.
Step-by-step explanation:
The treatment plan for manual defibrillation for a patient who is 8 years old or older is to start with 2 Joules/kg and escalate as needed. This is typically the initial energy level used for pediatric patients and those over the age of 8 when using manual defibrillation. Defibrillators are crucial in restoring a normal heart rhythm during cardiac arrest by delivering controlled electric shocks.