To use EIAS for analyzing data, the hospital staff first collect and store a wide array of relevant information during the patient’s perioperative journey, from pre-admission to discharge and follow-up.  The type of information collected is specified in the guidelines and is relevant due to its role in enhancing recovery after surgery.  For this reason, the data collected in the EIAS is generally organized around the perioperative process.

  • Admission information. This is where relevant demographic information is collected as well as information on pre-existing conditions that may affect patient outcomes. Examples of these include admission date, year of birth, height, weight, BMI, nutritional status, alcohol usage, presence of heart disease or pulmonary disease.
  • Operation. This section covers the period immediately preceding the start of the operation, the operation itself, and information on anesthesia/fluids.  Examples of these include type of procedure, duration of procedures, surgical approach (such as laparoscopic or open), type of anesthesia used, administration of PONV prophylaxis, volumes of IV fluids.
  • Recovery. This is where information on fluids, post-operative gut function and mobilization, post-operative pain and nausea are documented.
  • Discharge. Any complications during the primary hospital stay are documented here as well as discharge information.

Follow-up. Complications that occur after discharge are documented in this section.