What condition is oral glucose primarily used to treat?

Oral glucose is primarily utilized to treat low blood sugar levels, also known as hypoglycemia. Hypoglycemia occurs when there is insufficient glucose available in the bloodstream for the body's energy needs, which can lead to symptoms such as confusion, dizziness, sweating, and, in severe cases, loss of consciousness or seizures. Administering oral glucose provides a rapid source of sugar that can quickly raise blood glucose levels and alleviate these symptoms.

In contrast, the other choices do not align with the intended use of oral glucose. Hyperglycemia, or high blood sugar levels, would require different management strategies, such as insulin administration. Severe pain may necessitate analgesics or other therapeutic interventions rather than glucose. Cardiac arrest requires immediate lifesaving measures like CPR and medications specific for cardiac emergencies, not glucose. Thus, the use of oral glucose is specifically targeted at addressing the issue of low blood sugar levels effectively.