Patients who are hyperglycemic during pregnancy should receive which of the following treatments?

In managing hyperglycemia during pregnancy, the primary focus is on ensuring the health of both the mother and the developing fetus. While other treatments may contribute to overall maternal health, they do not address hyperglycemia directly.

Oxygen and IV fluid therapy can be important in certain clinical situations, especially if there are additional complications such as dehydration or distress. However, the most effective and conventional treatment for hyperglycemia in pregnancy specifically involves monitoring blood glucose levels and often the administration of insulin, as it is crucial for controlling blood sugar effectively to prevent complications such as gestational diabetes.

Dietary changes can help manage glucose levels, but they often require additional interventions alongside to be effective. Dextrose is counterproductive for treating hyperglycemia, as it could further raise blood sugar levels.

Thus, while option B mentions the provision of oxygen and IV fluid therapy, which can support the overall treatment of a hyperglycemic pregnant patient, the more direct and established treatment path revolves around insulin management and dietary considerations.