What may help reduce your patient's nausea?

Low-flow oxygen can help reduce a patient's nausea as it addresses potential hypoxia, which is a common cause of nausea in many medical conditions. By providing supplemental oxygen at a lower flow rate, you ensure that the patient receives adequate oxygenation without causing additional discomfort that might arise from high flow rates or excessive pressure. Maintaining an appropriate oxygen level helps stabilize the patient's condition, which can reduce feelings of nausea.

The other options may not be suitable for managing nausea. Oral glucose is primarily used for treating hypoglycemia and does not address the underlying issues that cause nausea. Cricoid pressure is a technique used to prevent aspiration during intubation and is unrelated to alleviating nausea. Positive-pressure ventilation is often used in respiratory distress situations, but it can sometimes increase discomfort and may not mitigate nausea effectively. Therefore, low-flow oxygen stands out as a supportive measure that directly contributes to the relief of nausea by ensuring adequate oxygen levels and overall comfort for the patient.