Answer:
Atrial fibrillation may be defined as the medical condition in which the individual has irregular heartbeat. This condition may result in the heart failure, stroke and the blood clots.
The statement made by the client that whether he is allowed to eat four serve of green vegetables everyday requires the additional teaching. The green vegetable contain large amount of vitamin K. This may reverse the effect of the warfarin. The client should allow only one bowl per day.