An enhanced recovery program in colorectal surgery is associated with decreased organ level rates of complications: a difference-in-differences analysis.

BACKGROUND: Perioperative care has lacked coordination and standardization. Enhanced recovery programs (ERPs) have been shown to decrease aggregate complications across surgical specialties. We hypothesize that the sustained implementation of an ERP will be associated with a decrease in a broad range of complications at the organ system level. STUDY DESIGN: Adult patients undergoing elective colorectal procedures between 1/2011 and 10/2016 were included. Patients were stratified based on exposure to a sustained ERP (7/2014-10/2016) after an 18-month wash-in period in a pre-post analysis. The primary outcome was 30-day complication rate by organ category as collected by National Surgical Quality Improvement Program (NSQIP) abstractors. Demographic and other patient level data were collected. Complication rates were compared using multivariable regression employing a differences-in-differences (DiD) approach using the national NSQIP PUF file to account for secular trends. RESULTS: A total of 1182 patients were included in this study, with 47% treated in an ERP. The two groups were similar in age, gender, race, BMI, comorbidity index, and procedure type. In a multivariable DiD analysis, significant reductions were seen in surgical site infection (OR 0.30; 95% CI 0.20-0.43), postoperative pulmonary complications (OR 0.46; 95% CI 0.24-0.90), transfusion (OR 0.27; 95% CI 0.15-0.51), urinary tract infections (OR 0.34; 95% CI 0.18-0.66), sepsis (OR 0.35; 95% CI 0.20-0.61), and cardiac complications (OR 0.10; 95% CI 0.01-0.84). A reduction in return to the operating room and 30-day readmission was also observed. Median length of stay (LOS) decreased from 5.2 to 3.5 days (p < 0.001). No significant changes occurred for acute kidney injury and hematologic complications. CONCLUSION: An ERP was associated with reduced complication rates across a wide range of organ categories and > 1.5-day reduction in LOS in a colorectal surgery population.

Evidence Review Conducted for the Agency for Healthcare Research and Quality Safety Program for Improving Surgical Care and Recovery: Focus on Anesthesiology for Bariatric Surgery.

Enhanced recovery after surgery protocols for bariatric surgery are increasingly being implemented, and reports suggest that they may be associated with superior outcomes, reduced length of hospital stay, and cost savings. The Agency for Healthcare Research and Quality, in partnership with the American College of Surgeons and the Johns Hopkins Medicine Armstrong Institute for Patient Safety and Quality, has developed the Safety Program for Improving Surgical Care and Recovery. We have conducted an evidence review to select anesthetic interventions that positively influence outcomes and facilitate recovery after bariatric surgery. A literature search was performed for each intervention, and the highest levels of available evidence were considered. Anesthesiology-related interventions for pre- (carbohydrate loading/fasting, multimodal preanesthetic medications), intra- (standardized intraoperative pathway, regional anesthesia, opioid minimization and multimodal analgesia, protective ventilation strategy, fluid minimization), and postoperative (multimodal analgesia with opioid minimization) phases of care are included. We have summarized the best available evidence to recommend the anesthetic components of care for enhanced recovery after surgery for bariatric surgery. There is evidence in the literature, and from society guidelines, to support the Agency for Healthcare Research and Quality Safety Program for Improving Surgical Care and Recovery goals for bariatric surgery.

American Society for Enhanced Recovery and Perioperative Quality Initiative Joint Consensus Statement on Perioperative Opioid Minimization in Opioid-Naïve Patients.

Surgical care episodes place opioid-naïve patients at risk for transitioning to new persistent postoperative opioid use. With one of the central principles being the application of multimodal pain interventions to reduce the reliance on opioid-based medications, enhanced recovery pathways provide a framework that decreases perioperative opioid use. The fourth Perioperative Quality Initiative brought together a group of international experts representing anesthesiology, surgery, and nursing with the objective of providing consensus recommendations on this important topic. Fourth Perioperative Quality Initiative was a consensus-building conference designed around a modified Delphi process in which the group alternately convened for plenary discussion sessions in between small group discussions. The process included several iterative steps including a literature review of the topics, building consensus around the important questions related to the topic, and sequential steps of content building and refinement until agreement was achieved and a consensus document was produced. During the fourth Perioperative Quality Initiative conference and thereafter as a writing group, reference applicability to the topic was discussed in any area where there was disagreement. For this manuscript, the questions answered included (1) What are the potential strategies for preventing persistent postoperative opioid use? (2) Is opioid-free anesthesia and analgesia feasible and appropriate for routine operations? and (3) Is opioid-free (intraoperative) anesthesia associated with equivalent or superior outcomes compared to an opioid minimization in the perioperative period? We will discuss the relevant literature for each questions, emphasize what we do not know, and prioritize the areas for future research.

Ketorolac Use and Anastomotic Leak in Elective Colorectal Surgery: A Detailed Analysis.

BACKGROUND: Recent population-level analyses have linked ketorolac use to adverse outcomes. However, its use is also associated with decreased opioids and faster return of bowel function. OBJECTIVE: This study aims to assess the association between ketorolac and anastomotic leak. We hypothesize that receiving at least 1 dose of ketorolac will not be associated with anastomotic leak in elective colorectal surgery. DESIGN: This is a retrospective, observational cohort study of a prospectively collected data base. Anastomotic leak rates and other patient outcomes were adjusted for patient-level factors and then compared via a multivariable logistic regression. A secondary analysis assessed a dose-response association with anastomotic leak. SETTING: This study was conducted at a tertiary care colorectal surgery service. PATIENTS: Consecutive patients undergoing elective colorectal surgery with a nondiverted anastomosis were identified from 2012 to 2016. INTERVENTION: Exposure was defined as any administration of ketorolac during the perioperative time period. MAIN OUTCOME MEASURES: The primary outcome measured was anastomotic leak. RESULTS: A total of 877 patients met inclusion criteria. Of these, 479 (54.6%) were women, and the median age was 55 years. Overall, 566 (64.5%) patients were exposed to ketorolac. In the cohort, 27 (3.1%) patients experienced an anastomotic leak. In an unadjusted analysis, there was no association between ketorolac exposure and anastomotic leak (ketorolac: 3.1% vs no ketorolac: 3.3%; p = 0.84). This persisted in a multivariable model (OR, 0.98; 95% CI, 0.38-2.57; p = 0.98). Neither AKI (OR, 3.24; 95% CI, 0.51-20.6; p = 0.21), return to the operating room (OR, 1.07; 95% CI, 0.40-2.85; p = 0.88), nor readmission (OR, 1.03; 95% CI, 0.59-1.80; p = 0.93) was associated with ketorolac use. In a secondary analysis of patients receiving ketorolac, there was no association between total ketorolac dosing and anastomotic leak (OR, 0.99; 95% CI, 0.99-1.00; p = 0.20). LIMITATIONS: This study was a retrospective review, and there was a low incidence of anastomotic leak. CONCLUSION: Ketorolac exposure was associated with neither anastomotic leak nor other important postoperative outcomes. See Video Abstract at http://links.lww.com/DCR/A784.

Intensive Care Unit Enhanced Recovery Pathway for Patients Undergoing Orthotopic Liver Transplants Recipients: A Prospective, Observational Study.

BACKGROUND: Liver transplant recipients continue to have high perioperative resource utilization and prolonged length of stay despite improvements in perioperative care. Enhanced recovery pathways have been shown in other surgical populations to produce reductions in hospital resource utilization. METHODS: A prospective, observational study was performed to examine the effect of an enhanced recovery pathway for postoperative care after liver transplantation. Outcomes from patients undergoing liver transplantation from November 1, 2013, to October 31, 2014, managed by the pathway were compared to transplant recipients from the year before pathway implementation. Multivariable regression analysis was used to assess the association of the clinical pathway on clinical outcomes. RESULTS: The intervention and control groups included 141 and 106 patients, respectively. There were no demographic differences between the control and intervention group including no differences between the length of surgery and cold ischemic time. Median intensive care unit length of stay was reduced from 4.4 to 2.6 days (P < .001). The intervention group had a higher likelihood of earlier discharge (hazard ratio [95% CI], 2.01 [1.55-2.62]; P < .001), and a 69% and 65% lower odds of receiving a plasma (P < .001) or packed red blood cell (P < .001) transfusion. There was no significant effect on hospital mortality (P = .40), intensive care unit readmission rates (P = .75), or postoperative infections (urinary traction infections: P = .09; pneumonia: P = .27). CONCLUSIONS: An enhanced recovery pathway focused on milestone-based elements of intensive care unit management and predetermined management triggers including hemodynamic goals, fluid therapy, perioperative antibiotics, glycemic control, and standardized transfusion triggers led to reductions in intensive care unit length of stay without an increase in perioperative complications.

Creation and Execution of a Novel Anesthesia Perioperative Care Service at a Veterans Affairs Hospital.

Physician-led perioperative surgical home models are developing as a method for improving the American health care system. These models are novel, team-based approaches that help to provide continuity of care throughout the perioperative period. Another avenue for improving care for surgical patients is the use of enhanced recovery after surgery pathways. These are well-described methods that have shown to improve perioperative outcomes. An established perioperative surgical home model can help implementation, efficiency, and adherence to enhanced recovery after surgery pathways. For these reasons, the Tennessee Valley Healthcare System, Nashville Veterans Affairs Medical Center created an Anesthesiology Perioperative Care Service that provides comprehensive care to surgical patients from their preoperative period through the continuum of their hospital course and postdischarge follow-up. In this brief report, we describe the development, implementation, and preliminary outcomes of the service.

Enhanced recovery after surgery, perioperative medicine, and the perioperative surgical home: current state and future implications for education and training.

PURPOSE OF REVIEW: The purpose of this review is to summarize the current state of perioperative medicine, including the perioperative surgical home (PSH) and enhanced recovery after surgery pathways (ERAS) as well as the educational implications of these concepts for current and future anesthesiology trainees. RECENT FINDINGS: Although there is significant, ongoing discussion surrounding the structural concept of the PSH, there remains little clinical evidence to support its development. On the other hand, publications surrounding ERAS principles continue to show clinical benefit in reducing length of stay, cost, and perioperative complications for a variety of surgical populations. In this milieu, perioperative medicine is increasingly being recognized as its own specialty in perioperative care that encompasses, but is larger than, ERAS. SUMMARY: There is sufficient evidence to support widespread adoption of ERAS principles, although the specifics of local implementation may vary from site to site. There is significant uncertainty as to what the PSH actually is. However, perioperative medicine is a defined specialty in medicine that overlaps significantly with anesthesiology core training and practice and will be a significant focus in future education, research, and clinical care provided by anesthesiologists.

Implementation of an Enhanced Recovery Protocol (ERP) is associated with an increase in the perioperative use of non-opioid multimodal analgesia for non-ERP patients.

STUDY OBJECTIVE: Incorporation of multimodal, non-opioid analgesic medications into patient care pathways has become a common theme of enhanced recovery pathways (ERPs), which have been shown to improve patient outcomes such as complication rates and length of stay. With surgical care episodes, patients also incur a significant risk of persistent postoperative opioid use, whether the surgery is classified as major or minor surgery. One method that has been shown to reduce perioperative opioid administration is a structured non-opioid multimodal analgesic strategy, widely utilized in ERPs. Despite well-defined benefits, the time to translate evidence-based approaches into clinical practice can be prolonged. This study examines the effect of implementation of an Enhanced Recovery Protocol (ERP) on the adoption of intraoperative multimodal analgesia outside of the auspices of an ERP care pathway, describing factors influencing the clinical implementation of non-opioid multimodal analgesia (NOMA) in routine practice. DESIGN: Retrospective cohort analysis. SETTING: We identified all surgical cases between January 2013 and December 2016 at Vanderbilt University Medical Center (VUMC). INTERVENTIONS: None. MEASUREMENTS: Using both segmented and logistic regression approaches, we compared non-ERP surgical cases before and after the initial ERP education and implementation in April 2014. Outcomes included provider, patient, and procedural factors associated with utilization of non-opioid multimodal analgesia (NOMA) in the immediate perioperative period. MAIN RESULTS: We studied 73,560 non-ERP cases. Cases utilizing any element of NOMA increased from 17.06% to 35.21% (X2 = 2358, df = 1, p < 0.01) before and after the initial ERP pathway implementation. Patient factors influencing this increased adoption of multimodal analgesia included lower American Society of Anesthesiologists Physical Status Class, younger age, and Caucasian race. Cases with in-room providers who were residents or trainees (as opposed to nurse anesthetists) or providers who had a greater number of prior ERP pathway cases were more likely to use multimodal. Procedure-specific factors favoring multimodal included use of laparoscopy. The gynecologic, neurosurgical, and orthopedic cases were more likely to utilize multimodal analgesics. CONCLUSIONS: From 2013 to 2016, NOMA usage in non-ERP patients increased significantly and in association with departmental education and concomitant implementation of an ERP pathway. Factors associated with increased uptake of multimodal analgesia included the presence of trainees, providers with a higher number of previous ERP pathway cases, patients who were younger, healthier, female, Caucasian race, and having specific types of surgery.

An enhanced recovery program for bariatric surgical patients significantly reduces perioperative opioid consumption and postoperative nausea.

BACKGROUND: Patients frequently remain in the hospital after bariatric surgery due to pain, nausea, and inability to tolerate oral intake. Enhanced recovery after surgery (ERAS) concepts address these perioperative complications and therefore improve length of stay for bariatric surgery patients. OBJECTIVES: To determine if ERAS concepts increase the proportion of patients discharged on postoperative day 1. Secondary objectives included mean length of stay, perioperative opioid use, emergency department visits, and readmissions. SETTING: A large metropolitan university tertiary hospital. METHODS: A quantitative before and after study was conducted for patients undergoing bariatric surgical patients. Data were collected surrounding length of stay, perioperative opioid consumption, antiemetic therapy requirements postoperatively, multimodal analgesia compliance, emergency department visits, and hospital readmission rates. Wilcoxon rank-sum and χ2 test were used to compare continuous and categorical variables, respectively. A secondary analysis was performed using Aligned Rank Transformation and Cochran-Mantel-Haenszel χ2 tests to account for an increase in sleeve gastrectomies in the intervention group. RESULTS: The 2 groups had clinically similar baseline characteristics. Comparison group (N = 366) and ERAS group (N = 715) patients underwent a primary bariatric surgery procedure. There was an increase in the number of patients undergoing a laparoscopic sleeve gastrectomy in the intervention group. After accounting for this increase, the percentage of patients discharged on postoperative day 1 was unchanged (79.8% non-ERAS versus 83.1% ERAS, P = .52). ERAS length of stay was statistically significantly lower for gastric bypass (P<.001) and robotic gastric bypass (P = .01). Perioperative opioid consumption was reduced (41.0 versus 16.2 morphine equivalents, P<0.001), and fewer ERAS patients required postoperative antiemetics (68.8% versus 46.2%, P<.001). Emergency department visits at 7 days were reduced (6.0% versus 3.2%, P = .04), but hospital readmission rates were unchanged. CONCLUSIONS: Implementing ERAS did not reduce the percentage of patients discharged on postoperative day 1 in a bariatric surgery program with historically low length of stay, but it led to significant reductions in perioperative opioid use, decreases in postoperative nausea, and early emergency room visits.

Randomized trial of a novel double lumen nasopharyngeal catheter versus traditional nasal cannula during total intravenous anesthesia for gastrointestinal procedures.

STUDY OBJECTIVE: Patients undergoing general anesthesia routinely experience episodes of hypoxemia. There are multiple causes of procedural oxygen desaturation including upper airway obstruction and central hypoventilation. We hypothesize that oxygen supplementation via nasopharyngeal catheter (NPC) will decrease the number of episodes of hypoxemia as compared to traditional NC oxygen supplementation in patients undergoing general anesthesia provided by an anesthesia provider for gastrointestinal endoscopy procedures. DESIGN: Randomized control trial. SETTING: Endoscopy suite. PATIENTS: Sixty patients undergoing intravenous general anesthesia for endoscopic gastrointestinal procedures that did not require endotracheal intubation were enrolled. INTERVENTIONS: Patients were randomized to receive supplemental oxygen by either a standard nasal cannula or a nasopharyngeal catheter. Initial oxygen flow rate was 4l/min and titrated at the anesthesia provider's discretion. Intravenous anesthetic consisted of a propofol infusion. MEASUREMENTS: Hypoxemia was defined as a pulse oximetry reading of <92%. Secondary outcomes included number of airway assist maneuvers such as jaw lift or other airway interventions. MAIN RESULTS: Of the 60 enrolled patients; three subjects in the NPC group were excluded from further analysis. There was no difference between group in age, ASA classification, Body Mass Index, oropharyngeal classification or total propofol dose. Patients who received nasopharyngeal oxygen supplementation were less likely to experience a clinically significant oxygen desaturation event 3 of 27 (11.0%) versus 12 of 30 subjects (40.0%), p=0.013. Interventions to assists with airway management were required for fewer patients in the NPC group 4 (14.8%) versus the NC group, 17 (56.7%), p=0.001. CONCLUSION: Oxygen supplementation via a nasopharyngeal catheter during intravenous general anesthesia resulted in significantly fewer episodes of hypoxemia and number of airway assist maneuvers. Future studies are needed to assess the utility of NPC in other clinical environments where supplemental oxygen is required in the setting of potential airway obstruction.

The role of anesthesia in the prevention of postoperative delirium: a systematic review.

INTRODUCTION: Postoperative delirium (POD) is defined as an acute neurologic insult characterized by changes in consciousness and cognition, altered perception and a fluctuating course. It leads to poor outcome and increased health care system costs. Considering its high incidence, up to 60%, and the lack of a first-choice treatment, prevention has become a priority. Our aim was to systematically review literature on POD prevention and to identify the role of anesthesia in this context. EVIDENCE ACQUISITION: MEDLINE and EMBASE were searched for studies considering any anesthetic intervention intended to prevent POD. Risk of bias was assessed with the Quality Assessment Tool for Quantitative Studies for original articles and with the R-AMSTAR checklist for systematic reviews. EVIDENCE SYNTHESIS: A total of 27 studies were included. Interventions included pre-, intra-/peri- and postoperative strategies to prevent POD. Only 9 out of 27 studies had high methodological quality. Use of a depth of anesthesia monitor and lighter sedation had the strongest evidence in reduction of POD. Perioperative dexmedetomidine, ketamine, dexamethasone, and antipsychotic administration may reduce the risk of POD. CONCLUSIONS: Methodologically robust studies supporting strategies for preventing POD are still lacking. Based on our analysis, anesthesiologists should consider the intraoperative use of a depth of anesthesia monitor and the choice for a lighter sedation when possible. The administration of preventive medications should be considered very carefully. Considering the multifactorial nature of POD, however, the integration of effective preventive strategies into multidisciplinary programs is advisable and should be the target for future research.

Heparin Resistance and Anticoagulation Failure in a Challenging Case of Cerebral Venous Sinus Thrombosis.

We report a challenging case of cerebral venous sinus thrombosis (multiple etiologic factors) that was complicated by heparin resistance secondary to suspected antithrombin III (ATIII) deficiency. A 20-year-old female previously healthy and currently 8 weeks pregnant presented with worsening headaches, nausea, and decreasing Glasgow Coma Scale/Score (GCS), necessitating mechanical ventilatory support. Imaging showed extensive clots in multiple cerebral venous sinuses including the superior sagittal sinus, transverse, sigmoid, jugular veins, and the straight sinus. She was started on systemic anticoagulation and underwent mechanical clot removal and catheter-directed endovascular thrombolysis with limited success. Complicating the intensive care unit care was the development of heparin resistance, with an inability to reach the target partial thomboplastin time (PTT) of 60 to 80 seconds. At her peak heparin dose, she was receiving >35 000 units/24 h, and her PTT was subtherapeutic at <50 seconds. Deficiency of ATIII was suspected as a possible etiology of her heparin resistance. Fresh frozen plasma was administered for ATIII level repletion. Given her high thrombogenic risk and challenges with conventional anticoagulation regimens, we transitioned to argatroban for systemic anticoagulation. Heparin produces its major anticoagulant effect by inactivating thrombin and factor X through an AT-dependent mechanism. For inhibition of thrombin, heparin must bind to both the coagulation enzyme and the AT. A deficiency of AT leads to a hypercoagulable state and decreased efficacy of heparin that places patients at high risk of thromboembolism. Heparin resistance, especially in the setting of critical illness, should raise the index of suspicion for AT deficiency. Argatroban is an alternate agent for systemic anticoagulation in the setting of heparin resistance.

A perioperative consult service results in reduction in cost and length of stay for colorectal surgical patients: evidence from a healthcare redesign project.

BACKGROUND: A major restructuring of perioperative care delivery is required to reduce cost while improving patient outcomes. In a test implementation of this notion, we developed and implemented a perioperative consult service (PCS) for colorectal surgery patients. METHODS: A 6-month planning process was undertaken to engage key stakeholders from surgery, nursing, and anesthesia in a healthcare redesign project that resulted in the creation of a PCS to implement a coordinated clinical pathway. After Institutional Review Board (IRB) approval, data were collected for all elective colorectal procedures for three phases: phase 0 (pre-implementation; 1/2014-6/2014), phase 1 (7/2014-10/2014), and phase 2 (11/2014-10/2015). Length of stay (primary endpoint; LOS), total hospital cost, use of clinical pathway components, markers of functional recovery, and readmission and reoperation rates were analyzed. Outcomes and patient characteristics among phases were compared by two-tailed t tests and Wilcoxon rank-sum tests. Categorical variables were analyzed by chi-square and Fisher's exact tests. RESULTS: We studied 544 patients (phase 0 = 179; phase 1 = 124; phase 2 = 241), with 365 consecutive patients being cared for in the redesigned care structure. Median LOS was reduced and sustained after implementation (phase 0, 4.24 days; phase 1, 3.32 days; phase 2, 3.32 days, P < 0.01 phase 0 v. phases 1 and 2), and mean LOS was reduced in phase 2 (phase 0, 5.26 days; phase 1, 4.93 days; phase 2, 4.36 days, P < 0.01 phase 0 v. phase 2). Total hospital cost was reduced by 17 % (P = 0.05, median). Application of clinical pathway components was higher in phases 1 and 2 compared to phase 0 (P < 0.01 for all components except anti-emetics); measures of functional recovery improved with successive phases. Reoperation and 30-day readmission rates were no different in phase 1 or phase 2 compared to phase 0 (P > 0.15). CONCLUSIONS: Restructuring of perioperative care delivery through the launch of a PCS-reduced LOS and total cost in a significant and sustainable fashion for colorectal surgery patients. Based on the success of this care redesign project, hospital administration is funding expansion to additional services.