Emerging concepts in enhanced recovery after surgery: Potential functional adaptations to existing principles

Abstract

The revolutionary concept of enhanced recovery after surgery (ERAS), recognized and proven in colonic surgery, soon caught on as an attractive proposition that translated into better and faster patient recovery after various types of surgery. As an evolving concept, it is being widely accepted, with various surgical specialties suitably adapting the guidelines for use in the perioperative setting. Identification and mitigation of risk factors in special groups of patients such as patients presenting for emergency surgery, those in the extremes of age and weight, and those with various comorbidities require additional care and investigations. The use of ERAS in emergency setting has been remarkably difficult to implement, owing to a short preoperative period, altered physiology, and unexpected postoperative outcomes. There is reluctance in the application of ERAS in emergency due to difficulty in implementing all its components, especially the preoperative components. The rapid advancements in technology and increased availability of point of care diagnostics, such as ultrasound and intraoperative electroencephalogram, and the increasing number of anesthesiologists getting trained in their usage are important factors that are positively influencing perioperative patient care in the last decade. This has led to significant developments in noninvasive and rapid methods of monitoring hemodynamics and postoperative care. This review aims to highlight the influence of newer perioperative practices that are already included or are likely to have positive impact when included in an ERAS program and provide comprehensive review on the application of ERAS in emergency setting and in various surgical specialties.