Pre-operative sedation

Hello,
I was told about an article (possibly in AORN) about giving pre-op patients 2 mg of Versed as soon as the IV is started to calm their anxieties. This is also before the OR nurse and CRNA talks to them. My boss is interested in this and asked me to find out about it but I am not having any luck. Any help??

We currently give 2 mg Versed about 10 minutes before the patient goes to OR. I am a little nervous about this. However, I have been reassured by my co-workers that 2 mg of Versed will not incapacitate a patient (I say BS since I had a lady falling out of bed giggling with 1 mg). Anyways, just wondering if there is any suggestions out there. Thanks!!