EPIC DATASET TABLES
Patient Information  Patient History Patient Visit  Patient Procedure Events  Patient Medications Patient Labs Patient LDA Patient Measurements  Patient Postoperative Complications  Patient Coding
SIS DATASET TABLES
Patient Information  Patient Medications Patient Labs Patient I/O Patient Vitals Patient Observations Patient Ventilator Patient A-line Patient Procedure Events 

Patient LDA

description of lines, drains, and airway devices used on the patient, the time of placement, the time of removal, and location of placement

MRN

Medical record number which is a unique identifier for an individual patient.

LOG_ID

LOG_ID is the identification number for a single patient encounter.

Description, Properties_Display, Flo_Meas_Name, Site

Description says the name of line, drain, airway device, or surgical event in question and the location.  Properties_Display is a free text column that provides more information including: removal time placement time, reason for placement or removal, patient condition upon placement or removal, and location. Flo_Meas_Name is says the name of line, drain, airway device, or surgical event. Site shows the location of event in question. These four columns contain redundant information. 
 

Placement_Instant, Removal_Instant

These two columns shows the time of placement and removal of a device or the start and end time of and event.
  

Line_Group_Name

Line_Group_Name groups the devices and events into 12 categories and provides a category name for the line, drain, airway device, or other event.