You and your EMT partner are dispatched for a 33 year old ma…

Yоu аnd yоur EMT pаrtner аre dispatched fоr a 33 year old male who is intoxicated. You have an 8 minute response time. Law enforcement has secured the scene. The patient is located in the back of a police cruiser. The patient is conscious and breathing handcuffed in the back seat. The officer reports that the patient was driving erratically and was pulled over on suspicion of DUI. The patient is alert to self, and reports feeling sick. The patient has pale, diaphoretic skin. What diagnostic tool do you want to utilize on the patient?