Patients typically arrive at the registration area at least 60 minutes before start of scheduled procedure. A GI endoscopy nurse will prepare patients in the standard manner and intravenous access will be placed. Eligible patients will be offered informed consent by the study PI or designee. Patients who agree to participate in the study will sign informed consent and will be registered in the database. A log with only non-identifiable (e.g. patients # 1) will also be maintained of eligible patients who decline to participate. The GI endoscopy nurse will monitor patient's vitals before, during and after procedure as per standard protocol.