You enter the cubicle and the patient is gone... what would you do?

Based at the University Hospitals of Leicester, we serve the educational needs of healthcare practitioners in Acute & Emergency Medicine across the East Midlands, UK
All tagged CAP27
You enter the cubicle and the patient is gone... what would you do?
Summary of three SIMs run on our Emergency Decisions Unit
Quick learning bites on EM topics.
31 y/o female, found unresponsive by her housemates. Empty packets of tablets in the room. She smells of alcohol.
15 y/o found unresponsive by his father. Has been struggling at school. Left a suicide note and was found next to some empty packets of his mother's tablets.
1.5% of Emergency Department (ED) attendances are from those with mental health issues.