Final answer:
The top priority nursing intervention in this situation would be to accompany the client to the bathroom and assess for bleeding.
Step-by-step explanation:
The top priority nursing intervention in this situation would be to accompany the client to the bathroom and assess for bleeding. The client's symptoms of weakness and dizziness could be indicative of postpartum hemorrhage, which is a potential complication after childbirth. It is important to assess for any signs of excessive bleeding, such as blood clots or heavy bleeding, while the client is in the bathroom. Prompt intervention can prevent further complications.