What step should be taken if an adult patient is experiencing an altered mental status due to suspected hypoglycemia?

When an adult patient is exhibiting signs of altered mental status due to suspected hypoglycemia, the priority is to address the underlying cause of the symptoms. In cases of hypoglycemia, the patient has a critically low level of glucose in their blood, which can lead to confusion, disorientation, or even loss of consciousness. Administering oral glucose can rapidly increase blood sugar levels, thereby potentially reversing the altered mental status if the patient is alert and able to swallow safely.

It's crucial to ensure that the airway is protected and the patient can safely take the oral glucose, as administering it to an unconscious or unresponsive patient could lead to choking or aspiration. This immediate intervention not only helps restore normal blood sugar levels but also allows for further assessment and treatment as necessary.

The other options do not address the urgent need to restore the patient's blood glucose levels effectively and safely. Intubation, seeking a second opinion, or checking for abdominal injuries are either invasive procedures or investigations that do not directly intervene in the critical situation caused by hypoglycemia.