Final answer:
The nurse should teach the pregnant client with gestational hypertension to restrict sodium in her diet. This can help manage the condition and control high blood pressure. The client should choose and consume foods and beverages that are low in sodium.
Step-by-step explanation:
The nurse should teach the pregnant client with gestational hypertension to restrict sodium in her diet at this time. Sodium is known to contribute to high blood pressure or hypertension, and limiting its intake can help manage the condition. The client should be advised to choose and consume foods and beverages that are low in sodium. This can include avoiding or minimizing the intake of processed and packaged foods, as well as reading food labels to identify high sodium content.