Which resources are most likely needed for a pregnant patient showing signs of dehydration due to vomiting?

The correct choice highlights the critical resources needed for a pregnant patient who is experiencing dehydration due to vomiting. In such cases, the priority is to address the immediate risks to both the mother and the fetus. Lab studies are essential to assess the patient's hydration status, electrolyte balance, and overall health, which can determine the severity of the dehydration and guide treatment.

IV fluids are necessary for rapid rehydration, especially if the patient is unable to keep fluids down orally due to persistent vomiting. Administering fluids intravenously ensures that the patient receives adequate hydration quickly and effectively. Additionally, IV antiemetics can help control nausea and vomiting, allowing for better tolerance of oral fluids afterwards, which is crucial for recovery.

Other options, while they might have relevance in different contexts, do not adequately address the immediate needs of a pregnant patient experiencing dehydration from vomiting. Physical therapy and counseling are not urgent in this situation, over-the-counter medications may not provide sufficient treatment for severe symptoms, and emergency surgery is not indicated unless there are other complications that require surgical intervention.