Which of the listed glucometer readings would be of concern to the EMT?

A glucometer reading of 48 mg/dL indicates hypoglycemia, which is a significantly low blood glucose level. Blood glucose levels below 70 mg/dL are typically considered low and can lead to symptoms such as confusion, sweating, irritability, and if not treated, can result in loss of consciousness or seizures. This reading requires immediate attention, as hypoglycemia can quickly escalate into a medical emergency, particularly in individuals with diabetes who may be on insulin or other glucose-lowering medications.

In contrast, the other readings—108 mg/dL, 78 mg/dL, and 118 mg/dL—are within normal or acceptable ranges for blood glucose levels. A reading of 108 mg/dL is slightly elevated but still within a safe range, 78 mg/dL falls within the normal fasting level, and 118 mg/dL, while on the upper side, is also not typically alarming, especially after a meal. Therefore, the reading of 48 mg/dL is of particular concern and requires urgent intervention.