Pre-operative carbohydrate loading may be used in type 2 diabetes patients

Effect of Preoperative Carbohydrate Loading on Postoperative Recovery of Individuals Who Have Type 2 Diabetes After Total Knee Arthroplasty: A Randomized Controlled Trial

BACKGROUND

Many individuals undergoing surgery involving general anesthesia are asked to fast for a prolonged period to ensure perioperative safety, yet this can initiate stress reactions and insulin resistance, harming postoperative recovery. Such fasting may be particularly problematic for those who have type 2 diabetes. Here, we assessed how giving such individuals' oral carbohydrates before total knee arthroplasty can affect outcomes.

METHODS

We randomized 90 patients who had non-insulin-dependent type 2 diabetes mellitus who were scheduled for elective total knee arthroplasty at one medical center between April 2022 and January 2023 to receive oral carbohydrates at two or four hours before surgery or to receive a carbohydrate-free "placebo" drink at four hours before surgery. The three groups were compared in terms of postoperative blood glucose, insulin resistance, β cell activity, postoperative wound complications, and other clinical outcomes.

RESULTS

The group who received oral carbohydrates at two or four hours before surgery showed significantly lower insulin resistance than the placebo group (group at two hours, 9.0 ± 3.4; group at four hours, 15.8 ± 6.9 versus placebo, 30.9 ± 10.5, P < 0.001) and lower β cell activity (207.7 ± 106.7%; group at four hours, 243.2 ± 114.9% versus 421.5 ± 209.3%, P < 0.001). Those groups were also significantly less likely than the placebo group to experience preoperative hunger or postoperative hyperglycemia. Among patients who received oral carbohydrates, those who received them two hours before surgery showed significantly lower insulin resistance and better glycemic control on postoperative day 1 than those who received carbohydrates four hours before surgery. None of the subjects developed intraoperative aspiration or experienced severe postoperative complications.

CONCLUSION

Oral carbohydrates at two to four hours before total knee arthroplasty are safe and can significantly alleviate preoperative hunger while mitigating postoperative insulin resistance and improving glycemic control in patients who have non-insulin-dependent type 2 diabetes mellitus.

Enhanced recovery after surgery in elective cesarean section patients with gestational diabetes mellitus does not lead to glucose-related maternal and neonatal complications

Objective

For elective cesarean section patients with gestational diabetes mellitus (GDM), there is a lack of evidence-based research on the use of enhanced recovery after surgery (ERAS). This study aims to compare the ERAS after-surgery protocol and traditional perioperative management.

Research design and methods

In this retrospective cohort study, singleton pregnancies with good glucose control GDM, delivered by elective cesarean sections under intravertebral anesthesia at least 37 weeks from January 1 to December 31, 2022, were collected at the Third Affiliated Hospital of Sun Yat-sen University. We divided all enrolled pregnant women and newborns into an ERAS group and a control group (the traditional perioperative management group) based on their adherence to the ERAS protocol. The primary outcome was the preoperative blood glucose level, with an increase of more than 1 mmol/L indicating clinical significance when compared to the control group. The secondary outcome was centered around an adverse composite outcome that affected both mothers and newborns.

Results

We collected a total of 161 cases, with 82 in the ERAS group and 79 in the control group. Although the mean preoperative blood glucose level in the ERAS group was significantly higher than in the control group (5.01 ± 1.06 mmol/L vs. 4.45 ± 0.90 mmol/L, p<0.001), the primary outcome revealed that the mean glycemic difference between the groups was 0.47 mmol/L (95% CI 0.15-0.80 mmol/L), which was below the clinically significant difference of 1 mmol/L. For the secondary outcomes, the ERAS group had an 86% lower risk of a composite adverse outcome compared to the control group. This included a 73% lower risk of perioperative maternal hypoglycemia and a 92% lower rate of neonatal hypoglycemia, all adjusted by age, hypertensive disorder of pregnancy, BMI, gestational weeks, primigravidae, primary pregnancy, GDM, surgery duration, and fasting glucose.

Conclusion

Implementing a low-dose carbohydrate ERAS in pregnant women with GDM prior to elective cesarean section, compared to traditional perioperative management, does not lead to clinically significant maternal glucose increases and thus glucose-related maternal or neonatal perioperative complications.

The EUropean PErioperative MEdical Networking (EUPEMEN) project and recommendations for perioperative care in colorectal surgery: a quality improvement study

BACKGROUND

Despite consensus supporting enhanced recovery programs, their full implementation in such a context is difficult due to conventional practices within various groups of professionals. The goal of the EUropean PErioperative MEdical Networking (EUPEMEN) project was to bring together the expertise and experience of national clinical professionals who have previously helped deliver major change programs in their countries and to use them to spread enhanced recovery after surgery protocols (ERAS) in Europe. The specific aim of this study is to present and discuss the key points of the proposed recommendations for colorectal surgery.

MATERIALS AND METHODS

Five partners from university hospitals in four European countries developed the project as partners. Following a non-systematic review of the literature, the European consensus panel generated a list of recommendations for perioperative care in colorectal surgery. A list of recommendations was formulated and distributed to collaborators at each center to allow modifications or additional statements. These recommendations were then discussed in three consecutive meetings to share uniform ERAS protocols to be disseminated.

RESULT

The working group developed (1) the EUPEMEN online platform to offer, free of charge, evidence-based standardized perioperative care protocols, learning activities, and assistance to health professionals interested in enhancing the recovery of their patients; (2) the preparation of the EUPEMEN Multimodal Rehabilitation manuals; (3) the training of the trainers to teach future teachers; and (4) the dissemination of the results in five multiplier events, one for each partner, to promote and disseminate the protocols.

CONCLUSION

The EUPEMEN project allowed the sharing of the expertise of many professionals from four different European countries with the objective of training the new generations in the dissemination of ERAS protocols in daily clinical practice through a new learning system. This project was proposed as an additional training tool for all the enhanced recovery program teams.

RESIDUAL GASTRIC VOLUME IN MORBIDLY OBESE DIABETICS AFTER AN OVERNIGHT FASTING OR 3 HOURS OF A CARBOHYDRATE-ENRICHED SUPPLEMENT: A RANDOMIZED CROSSOVER PILOT STUDY

BACKGROUND

To reduce the risk of regurgitation during anesthesia for elective procedures, residual gastric volumes (RGV) have traditionally been minimized by overnight fasting. Prolonged preoperative fasting presents some adverse consequences and has been abandoned for most surgical procedures, except for obese and/or diabetic patients.

AIMS

The aim of this study was to assess the RGV in morbidly obese diabetic patients after traditional or abbreviated fasting.

METHODS

This study was approved by the Ethics Committee for Research with Human Beings from the Federal University of Mato Grosso, under number 179.017/2012. This is a prospective, randomized, and crossover design study in eight morbidly obese type II diabetic patients. RGV was measured endoscopically after either traditional overnight fasting of at least 8 hours, or after abbreviated fasting of 6 hours for solids and 3 hours for a drink containing water plus 25 g (12.5%) of maltodextrin. Data were expressed as mean and range and differences were compared with paired t-tests at p<0.05.

RESULTS

The study population had a mean age of 41.5 years (28-53), weight of 135 kg (113-196), body mass index of 48.2 kg/m2 (40-62.4), and type II diabetes for 4.5 years (1-10). The RGV after abbreviated fasting was 21.5 ml (5-40) vs 26.3 ml (7-65) after traditional fasting. This difference was not significant (p=0.82).

CONCLUSIONS

Gastric emptying in morbidly obese diabetic patients is similar after either traditional or abbreviated fasting with a carbohydrate drink.

Exploring the diverse applications of Carbohydrate macromolecules in food, pharmaceutical, and environmental technologies

Carbohydrates are a class of macromolecules that has significant potential across several domains, including the organisation of genetic material, provision of structural support, and facilitation of defence mechanisms against invasion. Their molecular diversity enables a vast array of essential functions, such as energy storage, immunological signalling, and the modification of food texture and consistency. Due to their rheological characteristics, solubility, sweetness, hygroscopicity, ability to prevent crystallization, flavour encapsulation, and coating capabilities, carbohydrates are useful in food products. Carbohydrates hold potential for the future of therapeutic development due to their important role in sustained drug release, drug targeting, immune antigens, and adjuvants. Bio-based packaging provides an emerging phase of materials that offer biodegradability and biocompatibility, serving as a substitute for traditional non-biodegradable polymers used as coatings on paper. Blending polyhydroxyalkanoates (PHA) with carbohydrate biopolymers, such as starch, cellulose, polylactic acid, etc., reduces the undesirable qualities of PHA, such as crystallinity and brittleness, and enhances the PHA's properties in addition to minimizing manufacturing costs. Carbohydrate-based biopolymeric nanoparticles are a viable and cost-effective way to boost agricultural yields, which is crucial for the increasing global population. The use of biopolymeric nanoparticles derived from carbohydrates is a potential and economically viable approach to enhance the quality and quantity of agricultural harvests, which is of utmost importance given the developing global population. The carbohydrate biopolymers may play in plant protection against pathogenic fungi by inhibiting spore germination and mycelial growth, may act as effective elicitors inducing the plant immune system to cope with pathogens. Furthermore, they can be utilised as carriers in controlled-release formulations of agrochemicals or other active ingredients, offering an alternative approach to conventional fungicides. It is expected that this review provides an extensive summary of the application of carbohydrates in the realms of food, pharmaceuticals, and environment.

Randomized Controlled Trial Comparing the Effects of Preoperative Carbohydrate and Non-carbohydrate Loading on Gastric Emptying in Diabetic and Non-diabetic Patients Posted for Elective Surgery

Background Preoperative fasting for six hours and accepting clear fluids till two hours of surgery is followed as a regular practice. Carbohydrate-rich fluids antagonize catabolism and are claimed to be tolerated better. This study aims to compare the effect of carbohydrate-rich drinks on gastric volume and blood sugar control in diabetic and non-diabetic patients undergoing elective surgery with plain water. Methods Two hundred forty patients aged 40 to 65 undergoing elective surgery under regional anesthesia were randomized into diabetic control, diabetic study, non-diabetic control, and non-diabetic study. Control groups were given 400 ml of plain water, while the study group received 50 grams of dextrose dissolved in 400 ml of water two hours prior to surgery. Gastric volume was evaluated using USG, and thirst and discomfort were assessed using the Likert scale. Perioperatively, blood sugar values were monitored and kept under control using insulin. Results Mean gastric volume (ml) in diabetic control (35.3±12.95 ml), diabetic study (31.2±11.75 ml), non-diabetic control (29±11.42 ml), and non-diabetic study (30.4±9.12 ml) showed no statistically significant difference (p>0.05). Capillary blood glucose (CBG) values two hours post fluid intake showed a significant increase in CBG levels in the diabetic study (183.2±28.67 mg/dl) compared to the diabetic control group (138.66±15.81 mg/dl). The values returned to baseline within six hours. Thirst and discomfort were significantly lower in the study group of diabetic and non-diabetic populations. Conclusion We conclude that carbohydrate loading does not affect gastric volume in diabetics and non-diabetics. However, the sugar values do increase which may warrant hourly checking and administration of insulin in diabetics.

Preoperative carbohydrate drink in fast-track primary total knee arthroplasty: a randomized controlled trial of 168 patients

A key component in fast-track total knee arthroplasty (TKA) is early mobilization. Preoperative fasting might cause orthostatic hypotension and -intolerance which both can interfere with early mobilization. It was hypothesized that consuming a carbohydrate drink 2-3 hours prior to surgery is a viable option to reduce orthostatic hypotension, and as a result, improve rehabilitation. In this randomized controlled trial, all consecutive unilateral primary TKA patients were reviewed for eligibility. Exclusion criteria were American Society of Anesthesiologists (ASA) class above 3, older than 80 years of age, Diabetes Mellitus, and an insufficient comment of Dutch language. Patients were distributed in two groups. The control group was allowed to eat till 6 hours and drink clear fluids till 2 hours before surgery (standard treatment). The intervention group consumed, additionally to the standard treatment, a carbohydrate drink 2-3 hours before surgery. Blood pressure was measured both lying and standing as a measure for orthostatic hypotension during first time postoperative mobilization on day of surgery. A total of 168 patients were included. Prevalence of orthostatic hypotension in the control- and intervention group was 24 patients (34%) and 14 patients (19%) respectively, (p=0.05). Prevalence of orthostatic intolerance was 13 patients (19%) in the control group and 9 patients (13%) in the intervention group (p=0.32). No drink related adverse events occurred. In conclusion, taking a carbohydrate drink 2-3 hours before TKA significantly lowers the number of patients with orthostatic hypotension in early mobilization. However, the clinical relevance of the carbohydrate drink has to be studied further.

Investigating glycemic control in patients undergoing lower extremity bypass within an enhanced recovery pathway at a single institution

BACKGROUND

Enhanced recovery pathways (ERPs) aim to lower perioperative stress to facilitate recovery. Limited fasting combined with carbohydrate loading is a common ERP element. The effect of limited fasting has not been elucidated in patients with diabetes. Given the known deleterious effects of poor glycemic control in the perioperative period, such as increased rates of surgical site infection, the associations of preoperative limited fasting with perioperative glycemic control and early outcomes after lower extremity bypass (LEB) were investigated.

METHODS

A single institutional retrospective review of patients who underwent infrainguinal LEB from 2016 to 2022 was performed. The ERP was initiated in May 2018. Patients were stratified by diabetes diagnosis and preoperative hemoglobin A1C (HbA1C) levels. Perioperative glycemic control was compared between the limited fasting and traditional fasting patients (nil per os at midnight). Limited fasting was defined as a clear liquid diet until 2 hours before surgery with recommended carbohydrate loading consisting of 400 cc of a clear sports drink (approximately 30 g of carbohydrates). All limited fasting patients were within the ERP. Early perioperative hyperglycemia (EPH) was defined as blood glucose of >180 mg/dL within the first 24 hours of surgery. Perioperative outcomes such as surgical site infection, readmission, reinterventions, and complications were also compared.

RESULTS

A total of 393 patients were included (limited fasting patients N = 135; traditional fasting patients N = 258). A trend toward EPH was seen in all limited fasting groups. Evaluating limited fasting within diabetic patients revealed that 74.5% of limited fasting-diabetic patients had EPH compared with 49.6% of traditional fasting-diabetic patients (P = .001). When stratified by the HbA1C level, a significantly higher rate of EPH was seen in the HbA1c >8.0% groups, with 90.5% in the limited fasting patients compared with 67.9% in traditional fasting patients (P = .05). Limited fasting-diabetic patients experience a longer postoperative length of stay at 5.0 days (interquartile range: 3, 9) vs 4.0 days (2, 6) in nondiabetic patients (P = .016).

CONCLUSIONS

ERP limited fasting was associated with early perioperative hyperglycemia after LEB, particularly in patients with HbA1C >8.0%. Due to the high prevalence of diabetic patients undergoing LEB under ERP, the role of limited fasting and common glycemic elements of ERP may need to be re-evaluated in this subpopulation.

Preoperative considerations for patients with diabetes

INTRODUCTION

Patients undergoing surgery require a thorough assessment preoperatively. Hyperglycemia is associated with poor outcomes, and stability of glucose levels is an important factor in preoperative management. Diabetes presents a particular challenge since patients are often on multiple medications encompassing glycemic management and cardiovascular therapies.

AREAS COVERED

A PubMed search of published data and reviews on preoperative approaches in diabetes was conducted. Consensus opinion drives most of the guidelines and recommendations for management of diabetes in surgical patients. Pathophysiology is often complex with varying levels of glucose and surgical stress. Establishing well-controlled diabetes prior to surgical intervention should be standard practice in non-emergent procedures. We review the best practices for implementing preoperative assessment, with diabetes with a focus on diabetes medications.

EXPERT OPINION

The management of a patient preoperatively varies by region and country. Institutions differ in approaches to preoperative evaluation and the establishment of consistent approaches would provide a platform for monitoring patient outcomes. Multidisciplinary teams and pre-assessment clinics for preoperative evaluation can enhance patient care for those undergoing surgery.

Effect of Carbohydrate Loading in Diabetic Patients Undergoing Laparoscopic Cholecystectomy: A Randomized Controlled Trial

INTRODUCTION

Investigations of preoperative oral carbohydrate (CHO) loading have primarily examined benefits among patients without diabetes. Preoperative CHO-rich beverages in general populations have resulted in reductions in insulin resistance after surgery, protein loss, metabolic derangements, and immune dysfunction. The aim of this study was to assess the effect of CHO loading in diabetic patients undergoing laparoscopic cholecystectomy.

METHODS

Diabetic patients controlled on oral hypoglycemic agent were randomly divided into two groups: (1) Group T - this group will be given 50 g of maltodextrin before two hours of surgery; (2) Group C - this group will be kept nil per oral as per standard protocol. Blood sugar, serum insulin, serum cortisol, and insulin requirement were compared in both groups.

RESULTS

Blood sugar levels of Group C were found to be significantly higher than that of Group T at six hours and 24 hours. In Group T, a rise in baseline serum insulin (8.94 ± 3.43 mIU/l) was observed at 24 hours (13.23 ± 5.71 mIU/l). A change of 4.29 ± 3.00 mIU/l in serum insulin level was observed. The change in baseline serum insulin levels was 47.99%. In Group C too, a rise in baseline serum insulin (6.27 ± 1.74 mIU/l) was observed at 24 hours (18.00 ± 5.34 mIU/l). A change of 11.73 ± 4.97 mIU/l in serum insulin level was observed. The change in baseline HOMA-IR (homeostatic model assessment for insulin resistance) levels in Group T was 53.66%. A rise (4.39 ± 1.63) in baseline HOMA-IR of Group C (1.65 ± 0.45) was observed at 24 hours (6.04 ± 1.76). The change in baseline HOMA-IR levels in Group C was 266.06%.

CONCLUSIONS

CHO loading is observed to be beneficial in diabetic patients undergoing laparoscopic cholecystectomy. No adverse effects or an increased risk of aspiration were observed in the intervention group during the study period.

Enhanced recovery protocols for ambulatory surgery

INTRODUCTION

In the United States, ambulatory surgeries account for up to 87% of all surgical procedures. (1) It was estimated that 19.2 million ambulatory surgeries were performed in 2018 (https://www.hcup-us.ahrq.gov/reports/statbriefs/sb287-Ambulatory-Surgery-Overview-2019.pdf). Cataract procedures and musculoskeletal surgeries are the most common surgical interventions performed in ambulatory centers. However, more complex surgical interventions, such as sleeve gastrectomies, oncological, and spine surgeries, and even arthroplasties are routinely performed as day cases or in a model of an ambulatory extended recovery. (2-5) The ambulatory surgery centers industry has grown since 2017 by 1.1% per year and reached a market size of $31.2 billion. According to the Ambulatory Surgery Center Association, there is a potential to save $57.6 billion in Medicare costs over the next decade (https://www.ibisworld.com/industry-statistics/market-size/ambulatory-surgery-centers-united-states/). These data suggest an expected rise in the volume of ambulatory (same day) or extended ambulatory (23 h) surgeries in coming years. Similar increases are also observed in other countries. For example, 75% of elective surgeries are performed as same-day surgery in the United Kingdom. (6) To reduce costs and improve the quality of care after those more complex procedures, ambulatory surgery centers have started implementing patient-centered, high-quality, value-based practices. To achieve those goals, Enhanced Recovery After Surgery (ERAS) protocols have been implemented to reduce the length of stay, decrease costs, increase patients' satisfaction, and transform clinical practices. The ERAS fundamentals for ambulatory surgery are based on five pillars, including (1) preoperative patient counseling, education, and optimization; (2) multimodal and opioid-sparing analgesia; (3) nausea and vomiting, wound infection, and venous thromboembolism prophylaxis; (4) maintenance of euvolemia; and (5) encouragement of early mobility. Those pillars rely on interdisciplinary teamwork led by anesthesiologists, surgery-specific workgroups, and safety culture. (2) Research shows that a team of ambulatory anesthesiologists is crucial in improving postoperative nausea and vomiting (PONV) and pain control. (7) This review will summarize the current evidence on the elements and clinical importance of implementing ERAS protocol for ambulatory surgery.

The diabetes patient for ambulatory surgery

Perioperative management of blood glucose is vital to the recovery and return to normal life for patients with diabetes undergoing ambulatory surgery. Important aspects of the preoperative assessment include the evaluation of the patient's usual level of control and self-management skills and the occurrence of hypoglycemia. There are disputes on the perioperative administration of diabetes medications, insulin, and certain other drugs. This article will provide information on current recommendations for ambulatory surgery and anesthesia for diabetic patients. It will address controversies and reemphasize important points of optimal care. New drugs and technologies for diabetes patients that may impact the perioperative period will be described.

Sixth Annual Enhanced Recovery After Surgery Symposium highlights: work in progress or standard care?

Enhanced Recovery After Surgery (ERAS) protocols have demonstrated effectiveness in accelerating patient recovery and improving outcomes. Since the systemwide implementation of ERAS protocols at Baylor Scott & White Health, an annual multidisciplinary conference has provided a review of outcomes and advancements in the ERAS program. This meeting, coined the ERAS symposium, allows providers who utilize recovery protocols to collaborate with national and international leaders in the field to improve the clinical care of patients. The sixth annual ERAS symposium was held on February 10, 2023, and provided key presentations that discussed the latest results from ERAS efforts across multiple surgical specialties along with updates in anesthesia, nursing, and nutrition. A summary of those presentations, which included perioperative glycemic control, misconceptions in pain management, and emerging ERAS protocols in different surgical specialties, is provided to document the system progress.

2023 American Society of Anesthesiologists Practice Guidelines for Preoperative Fasting: Carbohydrate-containing Clear Liquids with or without Protein, Chewing Gum, and Pediatric Fasting Duration-A Modular Update of the 2017 American Society of Anesthesiologists Practice Guidelines for Preoperative Fasting

These practice guidelines are a modular update of the "Practice guidelines for preoperative fasting and the use of pharmacologic agents to reduce the risk of pulmonary aspiration: Application to healthy patients undergoing elective procedures." The guidance focuses on topics not addressed in the previous guideline: ingestion of carbohydrate-containing clear liquids with or without protein, chewing gum, and pediatric fasting duration.

Pilot study on the impact of a carbohydrate loading drink on postprandial glycemic responses and gastric emptying in adults with prediabetes and type 2 diabetes mellitus

BACKGROUND

Preoperative carbohydrate (CHO) loading improves patient outcomes but is not extensively studied in individuals with diabetes mellitus (DM), resulting in limited professional recommendations. This study examined postprandial glycemic responses and gastric emptying rates following consumption of a CHO drink in adults with and without DM.

METHODS

A single-arm, nonrandomized pilot trial was conducted in adults without DM (non-DM) (47.5 ± 2.5 years), with pre-DM (55.8 ± 3.0 years), and with type 2 DM (56.2 ± 2.5 years). Following an overnight fast, participants consumed a 50 g CHO drink followed by 1.5 g liquid paracetamol. Venous blood samples were collected at baseline (ie, t = 0 min) and 15, 30, 45, 60, 90, 120, 150, 180, 210, and 240 min for plasma glucose and serum insulin and paracetamol concentrations to assess gastric emptying.

RESULTS

Participants with DM were older and had a higher body mass index than non-DM participants (31.2 ± 0.9 vs 28.2 ± 0.9). Fasting glucose and hemoglobin A1c levels differed significantly across groups (non-DM: 95.4 ± 3.6 mg/dl and 5.2% ± 0.1%; pre-DM: 111.6 ± 3.6 mg/dl and 5.8% ± 0.1%; DM: 167.4 ± 3.6 mg/dl and 7.2% ± 0.1%). Compared with the non-DM group, DM had increased glucose responses at 30-180 min. Glucose returned to baseline at 150 min in the non-DM and pre-DM groups compared with 210 min in the DM group. Paracetamol concentrations were not significantly different between the non-DM and DM groups.

CONCLUSION

Blood glucose returned to baseline within ~2.5 h in non-DM and pre-DM groups and ~3.5 h in participants with DM following ingestion of a CHO drink. No consistent differences in gastric emptying rates were observed between participants with and without DM.

Guidelines for Perioperative Care for Liver Surgery: Enhanced Recovery After Surgery (ERAS) Society Recommendations 2022

BACKGROUND

Enhanced Recovery After Surgery (ERAS) has been widely applied in liver surgery since the publication of the first ERAS guidelines in 2016. The aim of the present article was to update the ERAS guidelines in liver surgery using a modified Delphi method based on a systematic review of the literature.

METHODS

A systematic literature review was performed using MEDLINE/PubMed, Embase, and the Cochrane Library. A modified Delphi method including 15 international experts was used. Consensus was judged to be reached when >80% of the experts agreed on the recommended items. Recommendations were based on the Grading of Recommendations, Assessment, Development and Evaluations system.

RESULTS

A total of 7541 manuscripts were screened, and 240 articles were finally included. Twenty-five recommendation items were elaborated. All of them obtained consensus (>80% agreement) after 3 Delphi rounds. Nine items (36%) had a high level of evidence and 16 (64%) a strong recommendation grade. Compared to the first ERAS guidelines published, 3 novel items were introduced: prehabilitation in high-risk patients, preoperative biliary drainage in cholestatic liver, and preoperative smoking and alcohol cessation at least 4 weeks before hepatectomy.

CONCLUSIONS

These guidelines based on the best available evidence allow standardization of the perioperative management of patients undergoing liver surgery. Specific studies on hepatectomy in cirrhotic patients following an ERAS program are still needed.

AUGS-IUGA Joint Clinical Consensus Statement on Enhanced Recovery After Urogynecologic Surgery: Developed by the Joint Writing Group of the International Urogynecological Association and the American Urogynecologic Society. Individual writing group members are noted in the Acknowledgements section

INTRODUCTION AND HYPOTHESIS

Enhanced recovery after surgery (ERAS) evidence-based protocols for perioperative care can lead to improvements in clinical outcomes and cost savings. This article aims to present consensus recommendations for the optimal perioperative management of patients undergoing urogynecological surgery.

METHODS

A review of meta-analyses, randomized clinical trials, large nonrandomized studies, and review articles was conducted via PubMed and other databases for ERAS and urogynecological surgery. ERAS protocol components were established, and then quality of the evidence was both graded and used to form consensus recommendations for each topic. These recommendations were developed and endorsed by the writing group, which is comprised of the American Urogynecologic Society and the International Urogynecological Association members.

RESULTS

All recommendations on ERAS protocol items are based on best available evidence. The level of evidence for each item is presented accordingly. The components of ERAS with a high level of evidence to support their use include fasting for 6 h and taking clear fluids up to 2 h preoperatively, euvolemia, normothermia, surgical site preparation, antibiotic and antithrombotic prophylaxis, strong antiemetics and dexamethasone to reduce postoperative nausea and vomiting, multimodal analgesia and restrictive use of opiates, use of chewing gum to reduce ileus, removal of catheter as soon as feasible after surgery and avoiding systematic use of drains/vaginal packs.

CONCLUSIONS

The evidence base and recommendations for a urogynecology-relevant ERAS perioperative care pathway are presented in this consensus review. There are several elements of ERAS with strong evidence of benefit in urogynecological surgery.

Effect of pre-operative carbohydrate loading on aspiration risk evaluated with ultrasonography in type 2 diabetes patients: a prospective observational pilot study

Owing to concerns about delayed gastric emptying or hyperglycemia, evidence is lacking regarding whether pre-operative carbohydrate loading can be routinely administered to patients with type 2 diabetes. The objective of this study was to determine the aspiration risk and gastric volume after pre-operative carbohydrate loading in patients with type 2 diabetes. A prospective, single-center, observational cohort study. The study was conducted at a tertiary teaching hospital in Seoul, Korea, from May 2020 to May 2021. Patients (n = 49) with type 2 diabetes underwent elective noncardiac surgery. All patients were administered carbohydrate loading two hours before surgery. Once in the operating room, they underwent gastric ultrasonography to determine gastric volume. The anesthesiologists monitored the patients' glucose concentrations during and after surgery. The primary outcome was the predicted risk of aspiration. The secondary outcomes were gastric volume, antral grade, satisfaction score, and perioperative glucose profile. Forty-nine patients were analyzed. All patients had a low risk of aspiration after carbohydrate loading, as follows: 33 (67.3%) patients classified as antral grade 0 and 16 (32.7%) patients classified as antral grade 1. The median time from carbohydrate drink ingestion to ultrasound examination was 120 min (IQR 115-139). After carbohydrate loading, the median gastric volume in the right-lateral position after carbohydrate loading was 2.64 ml (IQR 0.00-32.05). The mean glucose concentrations (SD) were 134 (24) mg/dl, 159 (37) mg/dl, 150 (32) mg/dl, and 165 (36) mg/dl at baseline, after induction, 30 min after surgery, and in the post anesthesia care unit, respectively. The median satisfaction score of the patients was 5 (IQR 4-5). Pre-operative carbohydrate loading may be feasible for patients with type 2 diabetes and without complications.Trial registration: ClinicalTrials.gov (NCT04456166). Registered on 2 July 2020.

Efficacy and safety of pre-gastroscopy commercial carbohydrate-rich whey protein beverage vs. plain water: a randomised controlled trial

Clinical benefits and safety of carbohydrate loading pre-gastroscopy remain unclear. We aimed to determine the effects of a commercial carbohydrate-rich whey protein beverage versus plain water given pre-gastroscopy on gastric residual volume and well-being, and to determine adverse events. This was a single centre, single-blinded, parallel-group, sex-stratified randomized controlled trial. Participants were randomized either to carbohydrate-rich whey protein beverage group (Resource®, Nestle Health Science) or control group (250 ml plain water) given pre-gastroscopy. Gastric contents were aspirated into a suction reservoir bottle to determine the gastric residual volume (GRV). Visual analogue scale (VAS) of well-being (anxiety, hunger, thirst, tiredness, and weakness) was compared before and after the intervention. Adverse events were also evaluated post-intervention. Of 369 screened, 78 participants (36 males, mean age 49 ± 14.3 years) were randomized. Compared with the control group, carbohydrate beverage was associated with significantly higher GRV (p < 0.001). Anxiety was less after intervention with carbohydrate beverage (p = 0.016), and after adjustment for confounders, fewer participants also experienced hunger (p = 0.043) and thirst (p = 0.021). No serious adverse events were reported with both interventions. Commercial carbohydrate-rich whey protein beverage is associated with higher gastric residual volume, better well-being and safe.Trial registration Clinicaltrial.gov. Identifier: NCT03948594, Date of registration: 14/05/2019.

Establishing a recommended duration of blood glucose monitoring in nondiabetic patients following orthopaedic surgery

Previous studies have demonstrated that blood glucose (BG) levels should be monitored for at least 1 week after orthopaedic surgery in diabetic patients, but no study has determined how long nondiabetic patients should be monitored. As postoperative elevations in BG have deleterious effects, determining a duration for monitoring the BG of nondiabetic patients after major orthopaedic surgery is needed to detect hyperglycemic events, create comprehensive protocols for nondiabetic orthopaedic patients, and reduce adverse outcomes. A retrospective study was conducted including consecutive patients who underwent a major orthopaedic surgery at a community hospital. A BG level of 150 mg/dl was the cutoff used to define hyperglycemia according to our institutional guidelines. A χ² , analysis of variance, and subgroup analysis were performed separately. Greater than 67% of nondiabetic patients experienced a high BG level (>150 mg/dl) after surgery. We found that nondiabetic patients reached their postoperative maximum BG level at 20 h, which was sooner compared to diabetic patients. We discovered more than 92% of nondiabetic patients reached a maximum BG levels within the first 72 h of hospitalization, while the BG levels after this period were found to be within normal limits in greater than 87% of cases. We propose that BG management be instituted in nondiabetics from the preoperative period to 72 h after surgery, including patients who are same-day discharges. There may not be a need to continue inpatient BG monitoring beyond the first 72 h for nondiabetic hospitalized patients with extended hospitalizations.

Impact of preoperative carbohydrate loading on gastric volume in patients with type 2 diabetes

BACKGROUND

Enhanced recovery after surgery advocates that consuming carbohydrates two hours before anesthesia is beneficial to the patient's recovery. Patients with diabetes are prone to delayed gastric emptying. Different guidelines for preoperative carbohydrate consumption in patients with diabetes remain controversial due to concerns about the risk of regurgitation, aspiration and hyperglycemia. Ultrasonic gastric volume (GV) assessment and blood glucose monitoring can comprehensively evaluate the safety and feasibility of preoperative carbohydrate intake in type 2 diabetes (T2D) patients.

AIM

To evaluate the impact of preoperative carbohydrate loading on GV before anesthesia induction in T2D patients.

METHODS

Patients with T2D receiving surgery under general anesthesia from December 2019 to December 2020 were included. A total of 78 patients were randomly allocated to 4 groups receiving 0, 100, 200, or 300 mL of carbohydrate loading 2 h before anesthesia induction. Gastric volume per unit weight (GV/W), Perlas grade, changes in blood glucose level, and risk of reflux and aspiration were evaluated before anesthesia induction.

RESULTS

No significant difference was found in GV/W among the groups before anesthesia induction (P > 0.05). The number of patients with Perlas grade II and GV/W > 1.5 mL/kg did not differ among the groups (P > 0.05). Blood glucose level increased by > 2 mmol/L in patients receiving 300 mL carbohydrate drink, which was significantly higher than that in groups 1 and 2 (P < 0.05).

CONCLUSION

Preoperative carbohydrate loading < 300 mL 2 h before induction of anesthesia in patients with T2D did not affect GV or increase the risk of reflux and aspiration. Blood glucose levels did not change significantly with preoperative carbohydrate loading of < 200 mL. However, 300 mL carbohydrate loading may increase blood glucose levels in patients with T2D before induction of anesthesia.

Preoperative Oral Carbohydrate Levels in Patients with Type 2 Diabetes Mellitus: The Clinical Guiding Significance of Free Fatty Acids

Background

It is still controversial whether preoperative oral carbohydrate (POC) should be applied to patients with type 2 diabetes mellitus (T2DM) in the enhanced recovery after surgery (ERAS) protocol. There is no relevant consensus or indicators to provide guidance as to whether T2DM patients should take POC.

Methods

In total, 164 T2DM patients who underwent laparoscopic hepatectomy were analyzed. According to the level of blood free fatty acids (FFAs) and whether the patients received POC, the patients were divided into 6 groups: the low FFA carbohydrate group (LFFAC group), low FFA fasting water group (LFFAF group), medium FFA carbohydrate group (MFFAC group), medium FFA fasting water group (MFFAF group), high FFA carbohydrate group (HFFAC group) and high FFA fasting water group (HFFAF group).

Results

Patients with low FFA levels showed better perioperative blood glucose control and a lower incidence of postoperative complications than those in the medium and high FFA groups, especially when patients received POC. Further analyses revealed that the postoperative plasma concentrations of IL-6 and TNF-α were significantly decreased in the POC group compared with the fasting water group, except for patients with high FFA levels. Receiver operating characteristic (ROC) curve analysis revealed that when the FFA concentration was higher than 0.745 mmol/L, the risk of poor blood glucose control during the perioperative period was increased.

Conclusions

FFAs have clinical guiding significance for the application of POC in patients with T2DM under ERAS administration. T2DM patients with low FFAs are more suitable for receiving POC.

Recommendations of the Society of Thoracic Surgery and the Section of Cardiothoracic and Vascular Surgery of the Spanish Society of Anesthesia, Resuscitation and Pain Therapy, for patients undergoing lung surgery included in an intensified recovery program

In recent years, multidisciplinary programs have been implemented that include different actions during the pre, intra and postoperative period, aimed at reducing perioperative stress and therefore improving the results of patients undergoing surgical interventions. Initially, these programs were developed for colorectal surgery and from there they have been extended to other surgeries. Thoracic surgery, considered highly complex, like other surgeries with a high postoperative morbidity and mortality rate, may be one of the specialties that most benefit from the implementation of these programs. This review presents the recommendations made by different specialties involved in the perioperative care of patients who require resection of a lung tumor. Meta-analyzes, systematic reviews, randomized and non-randomized controlled studies, and retrospective studies conducted in patients undergoing this type of intervention have been taken into account in preparing the recommendations presented in this guide. The GRADE scale has been used to classify the recommendations, assessing on the one hand the level of evidence published on each specific aspect and, on the other hand, the strength of the recommendation with which the authors propose its application. The recommendations considered most important for this type of surgery are those that refer to pre-habilitation, minimization of surgical aggression, excellence in the management of perioperative pain and postoperative care aimed at providing rapid postoperative rehabilitation.

Anesthesia and Enhanced Recovery After Surgery in Bariatric Surgery

The Enhanced Recovery After Surgery Society published guidelines for bariatric surgery reviewing the evidence and providing specific care recommendations. These guidelines emphasize preoperative nutrition, multimodal analgesia, postoperative nausea and vomiting prophylaxis, anesthetic technique, nutrition, and mobilization. Several studies have since evaluated these pathways, showing them to be safe and effective at decreasing hospital length of stay and postoperative nausea and vomiting. This article emphasizes anesthetic management in the perioperative period and outlines future directions, including the application of Enhanced Recovery After Surgery principles in patients with extreme obesity, diabetes, and metabolic disease and standardization of the pathways to decrease heterogeneity.

Perioperative care in open aortic vascular surgery: A Consensus Statement by the Enhanced Recovery after Surgery (ERAS®) Society and Society for Vascular Surgery

The Society for Vascular Surgery and the Enhanced Recovery After Surgery (ERAS®) Society formally collaborated and elected an international, multi-disciplinary panel of experts to review the literature and provide evidence-based recommendations related to all of the health care received in the perioperative period for patients undergoing open abdominal aortic operations (both transabdominal and retroperitoneal approaches, including supraceliac, suprarenal, and infrarenal clamp sites, for aortic aneurysm and aortoiliac occlusive disease). Structured around the ERAS® core elements, 36 recommendations were made and organized into preadmission, preoperative, intraoperative, and postoperative recommendations.

Dex® carbohydrate drinks in trauma patients fasting preoperatively – A patient satisfaction study

Introduction

Dex® is an alkaline carbohydrate (CHO) drink used preoperatively in patients fasting for elective surgery. Its utilisation in patients awaiting emergency surgery is yet to be ascertained. We undertook a study assessing patient satisfaction relating to the introduction of Dex® in trauma patients in a Level 1 adult trauma centre.

Methods

Patients fasting for surgery, and able to receive clear fluids in compliance with local guidelines, were eligible for inclusion. Patient satisfaction scores for predetermined variables were recorded via an interval observer scale prior to and following the introduction of Dex® to the trauma unit.

Results

Prior to the introduction of Dex® 14 satisfaction evaluations were completed. A further 13 evaluations were returned after Dex® was made available. Post-traumatic amnesia accounted for some patients being unable to complete the evaluation. Patients who completed the satisfaction evaluations after Dex® was introduced reported higher satisfaction in all but two variables (‘Headache’ and ‘Staff Annoyance’). ‘Hunger’ median scores were 7 (95% CI, 5–8) prior to the introduction of Dex® and 3 (95% CI, 2–6) after its’ introduction ( p = .004). ‘Thirst’ median scores were 7.5 (95% CI, 6–10) and 4 (95% CI, 3–8) prior to and after Dex® introduction, respectively ( p = .018).

Conclusion

No adverse events or theatre timing related issues were associated with the use of Dex®. A larger randomised study of CHO drink supplementation in trauma patients fasting preoperatively is warranted to further evaluate these satisfaction endpoints as well as the other variables investigated in this study. Postoperative evaluation of these markers should also be considered.

Preoperative carbohydrate loading with individualized supplemental insulin in diabetic patients undergoing gastrointestinal surgery: A randomized trial

BACKGROUND

Preoperative carbohydrate drink is used to improve patients' comfort and recovery, but evidence remains limited in diabetic patients. Herein we investigated the effects of preoperative carbohydrate loading with individualized supplemental insulin regimen in diabetic patients undergoing gastrointestinal surgery.

METHODS

A total of 63 adult patients with type 2 diabetes mellitus undergoing major gastrointestinal surgery were randomized to receive either carbohydrate loading with individualized supplemental insulin (Carbohydrate group) or routine management (Control group). The primary outcome was time to first flatus after surgery. Among secondary outcomes, subjective feelings of thirsty, hunger and fatigue were assessed with the Visual Analogue Scale (scores range from 0 to 100, where 0 indicate no discomfort and 100 the most severe discomfort) before and after surgery. Adverse events were monitored until 24 h after surgery.

RESULTS

All patients were included in the intention-to-treat analysis. Time to first flatus did not differ between groups (median 41 h [IQR 18-69] in the Control group vs. 43 h [27-54] in the Carbohydrate group; hazard ratio 1.24 [95% CI 0.74-2.07]; P = 0.411). The VAS score of preoperative subject feeling of thirsty (median difference -33 [95% CI -50 to -15], P < 0.001), hunger (-25 [-40 to -10], P < 0.001), and fatigue (-5 [-30 to 0], P = 0.004), as well as postoperative subject feeling of thirsty (-50 [-60 to -30], P < 0.001), hunger (-20 [-40 to 0], P = 0.003), and fatigue (0 [-20 to 0], P = 0.020) were all significantly lower in the Carbohydrate group than in the Control group. Intraoperative hypotension (40.6% [13/32] vs. 16.1% [5/31], P = 0.031) and postoperative nausea and vomiting within 24 h (31.3% [10/32] vs. 9.7% [3/31], P = 0.034) occurred less in patients given carbohydrate drink.

CONCLUSION

In diabetic patients undergoing gastrointestinal surgery, preoperative carbohydrate loading with individualized supplemental insulin did not promote gastrointestinal recovery but improved perioperative well-being.

Preoperative Carbohydrate Drink Intake Increases Glycemic Variability in Patients with Type 2 Diabetes Mellitus in Total Joint Arthroplasty: A Prospective Randomized Trial

BACKGROUND

Preoperative carbohydrate treatment attenuates insulin resistance and improves metabolism to an anabolic state. Despite these benefits, impaired glycemic control and aspiration risk related to gastroparesis represent concerns for patients with diabetes undergoing surgery. This randomized controlled trial investigated the effects of oral carbohydrate therapy on perioperative glucose variability, metabolic responses, and gastric volume in diabetic patients undergoing elective total hip or knee arthroplasty.

METHODS

Fifty diabetic patients scheduled to undergo elective total knee or hip arthroplasty during August 2019-October 2020 were randomly assigned to a control or carbohydrate therapy (CHO) group. CHO group of patients received a 400-mL carbohydrate drink 2-3 h before anesthesia; control group of patients underwent overnight fasting from midnight, one night before surgery. Blood glucose levels were measured before intake of the carbohydrate drink, before spinal anesthesia, preoperatively, immediately postoperatively, and 1 h postoperatively. Insulin level and gastric volume were measured before spinal anesthesia.

RESULTS

The glucose variability of patients in the CHO group was significantly higher than that of those in the control group (16.5 vs. 10.1%, P = 0.008). Similarly, insulin resistance was higher in the CHO group than in the control group (8.5 vs. 2.7, P < 0.001). The gastric volume did not differ significantly between the groups (61.3 vs. 15.2 ml, P = 0.082).

CONCLUSIONS

Preoperative oral carbohydrate therapy increases glucose variability and insulin resistance in diabetic patients. Therefore, carbohydrate beverages should be cautiously administered to diabetic patients, considering metabolic and safety aspects. Trial registration number ClinicalTrials.gov (No. NCT04013594).

Guidelines for Perioperative Care in Bariatric Surgery: Enhanced Recovery After Surgery (ERAS) Society Recommendations: A 2021 Update

Background

This is the second updated Enhanced Recovery After Surgery (ERAS®) Society guideline, presenting a consensus for optimal perioperative care in bariatric surgery and providing recommendations for each ERAS item within the ERAS® protocol.

Methods

A principal literature search was performed utilizing the Pubmed, EMBASE, Cochrane databases and ClinicalTrials.gov through December 2020, with particular attention paid to meta-analyses, randomized controlled trials and large prospective cohort studies. Selected studies were examined, reviewed and graded according to the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) system. After critical appraisal of these studies, the group of authors reached consensus regarding recommendations.

Results

The quality of evidence for many ERAS interventions remains relatively low in a bariatric setting and evidence-based practices may need to be extrapolated from other surgeries.

Conclusion

A comprehensive, updated evidence-based consensus was reached and is presented in this review by the ERAS® Society.

Comparison of ultrasound-guided residual gastric volume measurement between diabetic and non-diabetic patients scheduled for elective surgery under general anesthesia

Background and Aims:

The presence of gastric content increases the risk of aspiration during general anesthesia. Diabetic patients have delayed gastric emptying; however, despite adequate fasting because of diabetic gastroparesis these patients have a high risk of aspiration. This study aimed to compare ultrasound-guided measurement of residual gastric volume between diabetic and non-diabetic patients scheduled for elective surgery under general anesthesia.

Methods:

This prospective observational study included 80 patients divided into two groups of 40 diabetic patients with a minimum of 8 years history of diabetes and 40 nondiabetic patients aged >18 years, American Society of Anesthesiologists’ physical status I–II kept with similar fasting intervals. Before induction of general anesthesia, gastric ultrasound was performed using standard gastric scanning protocol to measure craniocaudal (CC) and anteroposterior (AP) diameters followed by calculation of antral cross-sectional area (CSA) and gastric volume in semi-sitting (SS) and right lateral decubitus (RLD) position using curved array probe. The gastric antrum volume (GV) was classified as Grade 0, 1, or 2, and risk stratification for aspiration was done. The nasogastric tube was inserted after induction of anesthesia to aspirate and compare the gastric content.

Results:

In the semi-sitting position, the mean CC and AP diameters were 16.38 ± 3.31 mm and 10.1 ± 2.53 mm in the non-diabetic group and 25.19 ± 4.08 mm and 15.8 ± 3.51 mm in the diabetic group, respectively. In RLD, CC was 1.91 ± 0.38 cm and AP was 1.19 ± 0.34 cm in the non-diabetic group as compared to the CC of 2.78 ± 0.4 cm and AP of 1.81 ± 0.39 cm in the diabetic group. The calculated CSA of 318.23 ± 97.14 mm² and 4 ± 1.1 cm² in diabetic were significantly higher than 133.12 ± 58.56 mm² and 1.83 ± 0.83 cm² of non-diabetic, in SS (p < 0.0001) and RLD (p < 0.0001) positions, respectively. The GV of 15.48 ± 11.18 ml in the diabetic group was significantly higher than (-) 9.77 ± 18.56 ml in the non-diabetic group (p < 0.0001). Despite the differences in CSA and GV between diabetic and non-diabetic groups, both groups showed a low gastric residual volume (<1.5 ml/kg). The gastric tube aspirate in the non-diabetic and diabetic groups was 0.3 ± 0.78 ml and 1.24 ± 1.46 ml, respectively, and was statistically significant (p = 0.0006).

Conclusion:

Patients with long-standing diabetes showed higher gastric residual and antral CSA when compared with non-diabetic patients. The clinical significance of these findings needs further evidence for the formulation of specific guidelines for diabetic patients.

Preoperative carbohydrate loading in surgical patients with type 2 diabetes: Are concerns supported by data?

Currently, there is a lack of consensus on the provision of preoperative carbohydrate loading in patients with type 2 diabetes mellitus (T2DM) due to theoretical concerns including the possibility of delayed gastric emptying, perioperative hyperglycemia, and poor surgical outcomes. This narrative review summarizes the accumulating evidence on preoperative carbohydrate loading in this population and whether these concerns are supported by preliminary evidence. In general, the available research suggests that carbohydrate loading may be implemented in those with T2DM without increased risk for intra- and postoperative hyperglycemia or surgical complications. However, there is strong justification for future research to definitively study this highly debated and timely topic. Ultimately, the inclusion of preoperative carbohydrate loading for surgical patients with DM should be guided by the surgical team's clinical judgment and individualized based on patient needs and characteristics.

Opportunities and Challenges for the Next Phase of Enhanced Recovery After Surgery: A Review

Importance

Enhanced Recovery After Surgery (ERAS) is a global surgical quality improvement initiative now firmly entrenched within the field of perioperative care. Although ERAS is associated with significant clinical outcome improvements and cost savings in numerous surgical specialties, several opportunities and challenges deserve further discussion.

Observations

Uptake and implementation of ERAS Society guidelines, together with ERAS-related research, have increased exponentially since the inception of the ERAS movement. Opportunities to further improve patient outcomes include addressing frailty, optimizing nutrition, prehabilitation, correcting preoperative anemia, and improving uptake of ERAS worldwide, including in low- and middle-income countries. Challenges facing enhanced recovery today include implementation, carbohydrate loading, reversal of neuromuscular blockade, and bowel preparation. The COVID-19 pandemic poses both a challenge and an opportunity for ERAS.

Conclusions and Relevance

To date, ERAS has achieved significant benefit for patients and health systems; however, improvements are still needed, particularly in the areas of patient optimization and systematic implementation. During this time of global crisis, the ERAS method of delivering care is required to take surgery and anesthesia to the next level and bring improvements in outcomes to both patients and health systems.

Incidence of urinary ketosis and the effect of carbohydrate drink supplementation during fasting for elective caesarean section: Audit

Elective lower segment caesarean section patients are routinely instructed to fast from food for 6h before surgery, with clear fluids up until 2h before surgery. We conducted an audit examining the true fasting times of mothers undergoing an elective caesarean section and the incidence of urinary ketones before and after introducing a preop carbohydrate drink (Nutricia preOp 400ml) to be administered to all patients at 6am on the day of surgery. We audited 50 patients prior to introducing the preop carbohydrate drink and 54 patients after the introduction of a carbohydrate drink. We found the mean fasting time from last caloric intake was reduced from 13h 35min to 5h 5min after the introduction of a preoperative carbohydrate drink. We found that the incidence of urinary ketones was 40.4% prior to the introduction of a preoperative carbohydrate drink and 38.3% after the introduction of a preop drink (p = 1). If fasting times were limited to under 4h, the incidence of urinary ketones is 10%. Our audit demonstrates that reducing preoperative fasting times is possible and preventing metabolic derangements may be possible, requiring an approach targeted at keeping fasting times to a minimum.

Recommendations of the Society of Thoracic Surgery and the Section of Cardiothoracic and Vascular Surgery of the Spanish Society of Anesthesia, Resuscitation and Pain Therapy, for patients undergoing lung surgery included in an intensified recovery program

In recent years, multidisciplinary programs have been implemented that include different actions during the pre, intra and postoperative period, aimed at reducing perioperative stress and therefore improving the results of patients undergoing surgical interventions. Initially, these programs were developed for colorectal surgery and from there they have been extended to other surgeries. Thoracic surgery, considered highly complex, like other surgeries with a high postoperative morbidity and mortality rate, may be one of the specialties that most benefit from the implementation of these programs. This review presents the recommendations made by different specialties involved in the perioperative care of patients who require resection of a lung tumor. Meta-analyses, systematic reviews, randomized and non-randomized controlled studies, and retrospective studies conducted in patients undergoing this type of intervention have been taken into account in preparing the recommendations presented in this guide. The GRADE scale has been used to classify the recommendations, assessing on the one hand the level of evidence published on each specific aspect and, on the other hand, the strength of the recommendation with which the authors propose its application. The recommendations considered most important for this type of surgery are those that refer to pre-habilitation, minimization of surgical aggression, excellence in the management of perioperative pain and postoperative care aimed at providing rapid postoperative rehabilitation.

Putting the 2019 Nutrition Recommendations for Pressure Injury Prevention and Treatment into Practice

GENERAL PURPOSE

To explore the changes in the National Pressure Injury Advisory Panel, European Pressure Ulcer Advisory Panel, and Pan Pacific Pressure Injury Alliance Clinical Practice Guideline for Prevention and Treatment of Pressure Ulcers/Injuries (CPG) nutrition recommendations and strategies for implementation.

TARGET AUDIENCE

This continuing education activity is intended for physicians, physician assistants, nurse practitioners, and nurses with an interest in skin and wound care.

LEARNING OBJECTIVES/OUTCOMES

After participating in this educational activity, the participant will:1. Synthesize the current evidence regarding nutrition approaches to medical conditions, including pressure injury prevention and treatment.2. Summarize the changes and recommendations in the 2019 edition of the CPG.

ABSTRACT

Healthy diets provide essential nutrients needed to maintain healthy skin and prevent or manage pressure injuries. The 2019 Clinical Practice Guideline for Prevention and Treatment of Pressure Ulcers/Injuries published by the National Pressure Injury Advisory Panel, European Pressure Ulcer Advisory Panel, and Pan Pacific Pressure Injury Alliance includes specific nutrition recommendations for patients with pressure injuries. The purpose of this CE/CME article is to explore the changes in the nutrition recommendations and strategies for implementation.

A U.S. survey of pre-operative carbohydrate-containing beverage use in colorectal enhanced recovery after surgery (ERAS) programs

BACKGROUND

Carbohydrate-containing drinks (CCD) are administered preoperatively in most enhanced recovery after surgery (ERAS) programs. It is not known which types of CCDs are used, e.g., simple vs. complex carbohydrate, and if the choice of drink differs in patients with diabetes.

METHODS

A national survey was performed to characterize the use of preoperative CCDs within the context of adult colorectal ERAS programs. The survey had questions regarding the use of preoperative CCDs, the types of beverages used, and the timing of beverage administration. The survey was administered electronically to members of the American Society for Enhanced Recovery (ASER) and manually to participants at the 2018 Perioperative Quality and Enhanced Recovery Conference in San Francisco, CA.

RESULTS

Responses were received from 78 unique hospitals with a colorectal ERAS program of which 68 (87.2%) reported administering a preoperative drink. Of these, 98.5%, 80.9%, and 60.3% of hospitals administered a beverage to patients without diabetes, patients with diabetes not taking insulin, and patients with diabetes taking insulin, respectively. Surprisingly, one third of programs that administered a beverage to patients with diabetes used a simple carbohydrate drink.

CONCLUSIONS

This survey finds a high use of CHO-containing beverages in colorectal ERAS programs. More than half of all programs administer a CHO-containing beverage to patients with diabetes, and surprisingly, there is significant use of simple carbohydrate beverages in patients with diabetes receiving insulin.

Reduction in Opiate Use, Pain, Nausea, and Length of Stay After Implementation of a Bariatric Enhanced Recovery After Surgery Protocol

PURPOSE

Evaluate adherence to bariatric surgery enhanced recovery after surgery (ERAS) protocols in pre-operative, operative, and post-operative phases, and to compare opiate use, nausea control, and length of stay (LOS) versus historical controls.

MATERIALS AND METHODS

A retrospective, observational cohort study was conducted to evaluate adherence to ERAS protocols and compare opiate and antiemetic use, pain intensity, and LOS versus those of traditional care (TC) patients preceding protocol implementation at Erie County Medical Center, a community-based hospital in Buffalo, NY, USA.

RESULTS

One hundred ERAS and TC patients were compared. Patients were similar in age (42.5 years), gender (female, ~ 80%), race (~ 80 white), and BMI (47 kg/m²). The primary procedure performed was sleeve gastrectomy (89% ERAS, 86% TC). Protocol adherence was high for ERAS phases: prior to admission (85-98%), pre-operative (96-100%), operative (93-99%), post-anesthesia care unit (PACU) (55-61%), and floor (86-98%). Opiate morphine milligram equivalent (MME) was reduced in ERAS vs. TC in hospital by 73% (43.5 ± 42.4 vs. 160 ± 116; p < 0.001), discharge prescribing by 53% (34.8 ± 38.2 vs. 74 ± 125 MME; p = 0.003), and in total by 69% (78.3 ± 67.5 vs. 252 ± 160; p < 0.001). Despite lower opiate use, ERAS had lower pain intensity entering PACU (1.1 ± 1.8 vs. 1.9 ± 2.6; p < 0.011), leaving PACU (1.7 ± 1.5 vs. 2.9 ± 1.5; p < 0.001), and floor day 0 (5.0 ± 2.1 vs. 5.9 ± 1.8; p < 0.001). Fewer ERAS required antiemetic day 0 (63% vs. 94%; p < 0.001). ERAS were discharged in fewer hours than TC (41.1 ± 15.5 vs. 52.1 ± 18.9 h; p < 0.001).

CONCLUSIONS

Bariatric surgery ERAS protocols were implemented with a high rate of adherence and yielded profound reduction in operative and post-operative opiate use while improving pain control and nausea management in hospital and decreasing LOS.

Post-operative gastroparesis following carbohydrate loading in a diabetic patient

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Gastroparesis may present with post-operative nausea/vomiting in diabetics.

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Pre-operative carbohydrate loading should be used with caution in diabetics.

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In enhanced recovery pathways, the role of carbohydrate loading should be clarified in diabetics.

Gastroparesis is a syndrome of delayed gastric emptying associated with nausea, vomiting, and postprandial fullness. Despite multiple etiologies, diabetes is one of the principal causes of gastroparesis. This case report examines a 57 year-old woman with poorly controlled diabetes type II (HbA1c 8.3%) complicated by diabetic nephropathy who was readmitted for gastroparesis after two days following uncomplicated robotic surgical staging for endometrial cancer. Prior to the procedure, the patient had received carbohydrate loading in accordance with our center’s enhanced recovery pathway; this resulted in severe acute hyperglycemia, a recognized cause of gastroparesis in women with diabetes. During her readmission, she improved with bowel rest and optimization of glycemic control. This case suggests that routine pre-operative carbohydrate loading should be used with caution in poorly controlled diabetic patients.

Safety and feasibility of oral carbohydrate consumption before cesarean delivery on patients with gestational diabetes mellitus: A parallel, randomized controlled trial

AIM

To investigate the safety and feasibility of taking low-concentration carbohydrate solution at 2 h before induction of anesthesia for gestational diabetes mellitus (GDM) patients.

METHODS

GDM patients undergoing cesarean section were randomly assigned to experimental group (n = 43) and control group (n = 42). Two hours before induction of anesthesia, participants in experimental group orally received 300 mL low-concentration carbohydrate solution, while those in control group received equivalent warm water. Blood glucose and serum insulin were measured at 2 h before induction of anesthesia, right before induction of anesthesia, and the morning of postoperative day 1. Neonatal blood glucose level was monitored at birth. Maternal gastrointestinal function and well-being were assessed perioperatively.

RESULTS

The levels of blood glucose and serum insulin right before induction of anesthesia in the experimental group were significantly higher than those in the control group. There were four cases with hypoglycemia in the experimental group and 19 cases in the control group right before induction of anesthesia (9.3% vs 45.2%, p < 0.001). The incidence of neonatal hypoglycemia was 2.3% in the experimental group and 7.1% in the control group with no significance. Hunger score of the participants between the two groups right before induction of anesthesia was significantly different. No aspiration, nausea, and vomiting occurred in both groups before, during, and after surgery. No significant difference was found in the time to the first flatus and abdominal distension between the two groups.

CONCLUSION

Taking low-concentration carbohydrate solution is safe and feasible for patients with GDM undergoing elective cesarean section.

Preoperative Carbohydrate Drinks Do Not Decrease Postoperative Nausea and Vomiting in Type 2 Diabetic Patients Undergoing Total Knee Arthroplasty-A Randomized Controlled Trial

INTRODUCTION

We evaluated whether preoperative carbohydrate drink would be able to decrease postoperative nausea and vomiting (PONV) and improve the quality of recovery (QoR) in diabetic patients undergoing total knee arthroplasty (TKA).

METHODS

Eighty-two patients were randomized to either the intravenous (IV) Dextrose group (n = 41) or Oral carbohydrate (CHO) group (n = 41). The IV Dextrose group received dextrose solution mixed with insulin while fasting, and the Oral CHO group received carbohydrate drinks preoperatively. PONV was assessed up to postoperative 36 hours, and QoR was assessed before surgery and on postoperative day (POD) 1. Blood glucose was measured from the morning of surgery until POD 1.

RESULTS

PONV scores were not different between the groups. Postoperative QoR scores were significantly higher in the Oral CHO group (median [interquartile range]; 160 [153 to 167]) than the IV Dextrose group (155 [147 to 159]) (P = 0.009), but the difference did not meet the minimal clinically important difference. Blood glucose was comparable between the groups.

DISCUSSION

Preoperative CHO drink did not reduce PONV in diabetic patients after total knee arthroplasty. A statistically significant but clinically questionable improvement in the QoR was seen in the Oral CHO group. However, preoperative CHO drink did not increase hyperglycemia, which suggests that it may be a safe component of perioperative care in diabetic patients.

The effects of preoperative oral carbohydrate drinks on energy intake and postoperative complications after hip fracture surgery: A pilot study

BACKGROUND

Hip fractures represent a major clinical burden for patients. Studies on the effect of preoperative carbohydrate loading before different surgical interventions have shown promising results but have not been tested in patients with hip fracture.

AIM

This study aimed to investigate the effects of preoperative oral carbohydrate drinks on the postoperative energy intake and incidence of complications after hip fracture surgery.

METHOD

This was a pilot study using a quasi-experimental design with a control group and an intervention group.

RESULT

The number of patients affected by more than one complication was higher in the control group than in the intervention group. According to the logistic regression analysis, the risk of any postoperative complication was reduced by approximately 50% OR (95% CI) 0.508 (0.23-1.10) in patients in the IG compared to those in the CG (p = 0.085).

CONCLUSION

The result of this pilot study indicated that using preoperative carbohydrate drinks can decrease the number of postoperative complications in patients with a hip fracture. Furthermore, the number of patients who meet their energy needs during the first three days postoperatively might increase. More research is needed to confirm the effect of preoperative carbohydrate drinks.

Guidelines for Perioperative Care in Cytoreductive Surgery (CRS) with or without hyperthermic IntraPEritoneal chemotherapy (HIPEC): Enhanced recovery after surgery (ERAS®) Society Recommendations - Part I: Preoperative and intraoperative management

BACKGROUND

Enhanced recovery after surgery (ERAS) pathways have been shown to considerably reduce complications, length of stay and costs after most of surgical procedures by standardised application of best evidence-based perioperative care. The aim was to elaborate dedicated recommendations for cytoreductive surgery (CRS) ± hyperthermic intraperitoneal chemotherapy (HIPEC) in a two-part series of guidelines based on expert consensus. The present part I of the guidelines highlights preoperative and intraoperative management.

METHODS

The core group assembled a multidisciplinary panel of 24 experts involved in peritoneal surface malignancy surgery representing the fields of general surgery (n = 12), gynaecological surgery (n = 6), and anaesthesia (n = 6). Experts systematically reviewed and summarized the available evidence on 72 identified perioperative care items, following the GRADE (grading of recommendations, assessment, development, evaluation) system. Final consensus (defined as ≥50%, or ≥70% of weak/strong recommendations combined) was reached by a standardised 2-round Delphi process, regarding the strength of recommendations.

RESULTS

Response rates were 100% for both Delphi rounds. Quality of evidence was evaluated high, moderate low and very low, for 15 (21%), 26 (36%), 29 (40%) and 2 items, respectively. Consensus was reached for 71/72(98.6%) items. Strong recommendations were defined for 37 items, No consensus could be reached regarding the preemptive use of fresh frozen plasma.

CONCLUSION

The present ERAS recommendations for CRS±HIPEC are based on a standardised expert consensus process providing clinicians with valuable guidance. There is an urgent need to produce high quality studies for CRS±HIPEC and to prospectively evaluate recommendations in clinical practice.

The Effect of an Enhanced Recovery Protocol on Colorectal Surgery Patients With Diabetes

BACKGROUND

The effect of an enhanced recovery protocol including preoperative carbohydrate loading on patients with diabetes is unclear. This study investigated the effect of both on perioperative glucose management and postoperative outcomes in patients with diabetes undergoing colorectal surgery.

MATERIALS AND METHODS

A retrospective study was conducted on patients undergoing elective colorectal surgery before and after implementation of an enhanced recovery protocol. Ninety-nine patients with type 2 diabetes (DM, 41 control versus 58 enhanced recovery) and 366 patients without diabetes (NDM, 158 control versus 158 enhanced recovery) were included. Multivariate analyses were run to compare mean peak perioperative serum glucose and postoperative outcomes in enhanced recovery and control cohorts with (DM) and without diabetes (NDM).

RESULTS

Mean peak preoperative glucose was elevated in DM enhanced recovery compared with DM control patients (192.2 [72.2] versus 139.8 [41.4]; P < 0.001). Mean peak intraoperative (162.3 [43.1] versus 163.8 [39.6]; P = 0.869) and postoperative glucose (207.7 [75.8] versus 217.8 [78.5]; P = 0.523) were similar in DM enhanced recovery compared with DM control group. Enhanced recovery led to decreased LOS in DM (P = 0.001) and NDM enhanced recovery patients (P < 0.000) compared with their control groups.

CONCLUSIONS

An enhanced recovery protocol may lead to increased peak preoperative glucose levels and 30-d readmissions in patients with type 2 diabetes undergoing colorectal surgery. However, the ultimate clinical significance of transiently elevated preoperative glucose in DM patients is uncertain. Our results suggest that an enhanced recovery protocol and preoperative carbohydrate loading does not lead to poorer postoperative glycemic control overall in patients with diabetes undergoing colorectal surgery.

Enhanced Recovery and Surgical Optimization Protocol for Minimally Invasive Gynecologic Surgery: An AAGL White Paper

This is the first Enhanced Recovery After Surgery (ERAS) guideline dedicated to standardizing and optimizing perioperative care for women undergoing minimally invasive gynecologic surgery. The guideline was rigorously formulated by an American Association of Gynecologic Laparoscopists Task Force of US and Canadian gynecologic surgeons with special interest and experience in adapting ERAS practices for patients requiring minimally invasive gynecologic surgery. It builds on the 2016 ERAS Society recommendations for perioperative care in gynecologic/oncologic surgery by serving as a more comprehensive reference for minimally invasive endoscopic and vaginal surgery for both benign and malignant gynecologic conditions. For example, the section on preoperative optimization provides more specific recommendations derived from the ambulatory surgery and anesthesia literature for the management of anemia, hyperglycemia, and obstructive sleep apnea. Recommendations pertaining to multimodal analgesia account for the recent Food and Drug Administration warnings about respiratory depression from gabapentinoids. The guideline focuses on workflows important to high-value care in minimally invasive surgery, such as same-day discharge, and tackles controversial issues in minimally invasive surgery, such as thromboprophylaxis. In these ways, the guideline supports the American Association of Gynecologic Laparoscopists and our collective mission to elevate the quality and safety of healthcare for women through excellence in clinical practice.

Comparison of fasting gastric volume using ultrasound in diabetic and non-diabetic patients in elective surgery: An observational study

Background and Aims:

Gastroparesis despite standard fasting in diabetic patients may increase the aspiration risk. This study aimed to compare fasting gastric volume (GV) of diabetic with non-diabetic patients scheduled for elective surgery using USG.

Methods:

This prospective observational study included 53 diabetic and 50 non-diabetic patients aged >18 years, American Society of Anesthesiologists' physical status I-III having similar fasting intervals. Before induction, using standard gastric scanning protocol, qualitative and quantitative assessments of gastric antrum in supine and right lateral decubitus (RLD) positions were performed with a curved array probe. USG grade, cross-sectional area (CSA) of the antrum and GV were calculated. The gastric antrum was classified as Grade 0, 1 or 2, signifying empty antrum, fluid in RLD position only and antral fluid in both supine and RLD positions, respectively.

Results:

In supine position, CC and AP diameters were 1.96 ± 0.41 cm and 0.9 ± 0.57 cm in control group and 2.28 ± 0.50 cm and 1.39 ± 0.44 cm in diabetic group, respectively. In RLD, CC was 2.28 ± 0.57 cm and AP was 1.24 ± 0.42 cm in control group as compared to CC 2.54 ± 0.56 cm and AP 1.82 ± 0.56 cm in diabetic group. The CSA of 2.57 ± 1.19 cm² and 3.73 ± 1.61 cm² in diabetic were significantly higher (P = 0.001) than 1.41 ± 0.55 cm² and 2.30 ± 1.18 cm² of control, in supine and RLD positions, respectively. GV was 4.20 ± 22.26 ml in control group and 9.15 ± 25.70 ml in diabetic group.

Conclusion:

Diabetic patients have higher gastric antral cross-sectional area and gastric volumes as observed by gastric ultrasound than the non-diabetic patients.

Enhanced Recovery After Surgery (ERAS) protocol in bariatric and metabolic surgery (BMS)-analysis of practices in nutritional aspects from five continents

This study aims to understand the prevalent practices on the nutritional aspects of the enhanced recovery after surgery (ERAS) protocol based on the knowledge and practice of surgeons, nutritionists, and anesthesiologists who work in the bariatric and metabolic surgery (BMS) units worldwide. This cross-sectional study enrolled BMS unit professionals from five continents-Africa, America, Asia, Europe, and Oceania. An electronic questionnaire developed by the researchers was provided to evaluate practices about the three nutritional aspects of ERAS protocol in BMS (Thorel et al. 2016): preoperative fasting, carbohydrate loading, and early postoperative nutrition. Only surgeons, nutritionists, and anesthesiologists were invited to participate. One hundred twenty-five professionals answered the questionnaires: 50.4% from America and 39.2% from Europe. The profile of participating professionals was bariatric surgeons 70.2%, nutritionists 26.4%, and anesthesiologists 3.3%. Approximately 47.9% of professionals work in private services, for about 11 to 20 years (48.7%). In all continents, a large majority were aware of the protocol. Professionals from the African continent reported having implemented the ERAS bariatric protocol 4.0 ± 0 years ago. It is worth mentioning that professionals from the five continents implemented the ERAS protocol based on the published literature (p = 0.012). About preoperative fasting abbreviation protocol, a significant difference was found between continents and consequently between services (p = 0.000). There is no uniformity in the conduct of shortening of fasting in the preoperative period and the immediate postoperative period. Early postoperative (PO) period protein supplementation is not performed in a standard fashion in all units globally. ERAS principles and practices are partial and insufficiently implemented on the five continents despite the prevalent knowledge of professionals based on evidence. Moreover, there is no uniformity in fasting, immediate postoperative diet, and early protein supplementation practices globally.