Preoperative immunonutrition and carbohydrate loading associated with improved bowel function after radical cystectomy

Nutritional Prehabilitation in Patients Undergoing Cystectomy: A Systematic Review

BACKGROUND/AIM

Nutrition is a key element of the prehabilitation process prior to surgery. The aim of this study was to identify the clinical pathways of nutritional prehabilitation before cystectomy.

METHODS

A systematic literature review was conducted in PubMed, the Cochrane Library, CINAHL, Scopus and the Web of Science databases. Quality and risk of bias assessment was conducted adhering to the JBI framework and evidence was evaluated according to the Oxford Centre for Evidence Based Medicine levels of evidence.

RESULTS

Out of 586 records identified, six studies were included. Among them, only two were randomized controlled trials. Immunonutrition has been shown to improve postoperative bowel function (3.12 vs. 3.74 days; RR 0.82; CI, 0.73-0.93; p = 0.0029) and decrease postoperative complications (-36.7%; p = 0.008) and readmission rates (-15.38%; p = 0.03). Furthermore, oral nutritional supplements combined with nutritional counseling demonstrated an accelerated recovery of bowel function (-1 day; p < 0.01), a reduction in the length of hospital stay (-1.75 days; p = 0.01), an improvement in handgrip strength (+6.8%, p < 0.001), an increase in bone mass (+0.3 kg, p = 0.04), and a better BMI value (+2.3%, p = 0.001).

CONCLUSIONS

Nutritional prehabilitation demonstrates potential in enhancing postoperative outcomes following radical cystectomy. Oral supplements, immunonutrition, and counseling exhibit efficacy in improving postoperative results.

Preoperative Immunonutrition Significantly Reduced Surgical Site Infection After Urinary Diversion for Invasive Bladder Cancer: A Retrospective Cohort Study

BACKGROUND

Radical cystectomy and ileal conduit have a high incidence of surgical site infection. In this study, we evaluated the effects of preoperative immunonutrition on its incidence following these procedures.

MATERIALS AND METHODS

We retrospectively enrolled 86 patients who underwent radical cystectomy and ileal conduit at our hospital between 2014 October and 2021 July. They were sequentially divided into the Immunonutrition group (n = 43) and Control group (n = 43). Patients in the Immunonutrition group drank 4 packs of IMPACT (Nestle, Japan) per day for 5 days before surgery. IMPACT contains arginine and eicosapentaenoic acid. We compared levels of plasma arginine and eicosapentaenoic acid before and after surgery and the rate of surgical site infection between the groups. Factors related to surgical site infection were analyzed using univariate and multivariable logistic regression analysis.

RESULTS

No statistically significant differences were observed in patient characteristics between the groups except for surgical operative method (P < .001) and transfusion (P = .009). Levels of plasma arginine and eicosapentaenoic acid were significantly increased the day before surgery in the immunonutrition group (P < .001). However, the levels of plasma arginine on the day after surgery did not vary significantly between the groups. The incidence of surgical site infection was significantly lower in the immunonutrition group (P = .014). Multivariate analyses showed a significant association of surgical site infection with immunonutrition (OR = 0.14, CI 0.03-0.72, P = .019) and with ASA classification (OR = 4.76, CI 1.23-18.40, P = .024).

CONCLUSIONS

Preoperative immunonutrition significantly reduced the incidence of surgical site infection following radical cystectomy and ileal conduit.

Enhanced Recovery After Surgery (ERAS) Reduces Hospital Costs and Length of Hospital Stay in Radical Cystectomy: A Prospective Randomized Controlled Study

Enhanced recovery after surgery (ERAS) protocols challenge the conventional and rigid methods of surgery and anesthesia and bring about novel changes that are quite drastic. The core principle of the protocol is to minimize the metabolic disturbance caused by surgical injury, facilitate the restoration of functions in a brief period, and promote the resumption of normal activity at the earliest. To compare the outcomes of ERAS and standard protocol for patients who have undergone radical cystectomy (RC) with ileal conduit urinary diversion. This prospective randomized controlled study was performed between 2015 and 2023. The 77 patients were divided into two groups ERAS (n=39) and Standard (n=38) by sequential randomization. These two groups are divided according to protocols of bowel preparation, anesthesia, and postoperative nutrition. The clinical and demographic characteristics of the patients, and the American Society of Anesthesiologists (ASA) and Eastern Cooperative Oncology Group (ECOG) scores were recorded. Perioperative findings, the degree of complications according to the Clavien-Dindo classification, and the total cost of treatment were recorded and analyzed. Length of hospital stay (18.82±9.25 day vs 27.34±15.05 day), and cost of treatment (2168,2±933$ 2879±1806$) were higher in the standard group. The rate of nausea and vomiting and the use of antiemetics were higher in the ERAS group compared to the standard group. In patients undergoing RC, the ERAS protocol was found to shorten the duration of hospitalization and reduce the total cost of hospital stay.

Exploring perioperative risk factors for poor recovery of postoperative gastrointestinal function following gynecological surgery: A retrospective cohort study

Purpose

To investigate perioperative risk factors that affect the recovery of postoperative gastrointestinal function in patients undergoing gynecological surgery and to establish a preoperative risk prediction scoring system.

Methods

In this retrospective cohort study, characteristics and perioperative factors of patients who underwent elective gynecological surgery at Union Hospital from January 2021 to March 2022 were extracted from electronic medical records. Patients were grouped according to the Intake, Feeling nauseated, Emesis, physical Exam, and Duration of symptoms (I-FEED) scoring system to compare collected data.

Results

In total, clinical data from 208 gynecological patients were extracted. The incidence of poor postoperative gastrointestinal recovery was 7.21 %. The number of previous abdominal surgeries (0.73 ± 0.06 vs 1.20 ± 0.24, p = 0.044), the incidence of malignant disease (20.2 % vs 53.3 %, p = 0.003), postoperative maximum WBC count (9.15 vs 12.44, p = 0.005) and postoperative minimum potassium (3.97 ± 0.36 vs 3.76 ± 0.37, p = 0.036) were not only associated with poor postoperative gastrointestinal recovery, but also malignant disease (p = 0.000), postoperative maximum WBC count (p = 0.027) and postoperative minimum potassium (p = 0.024) were significantly associated with the severity of postoperative gastrointestinal function. An increased number of previous abdominal surgeries and malignant primary disease could increase the risk of an I-FEED score >2 as independent risk factors.

Conclusion

Patients with poor postoperative GI function had poorer postoperative recovery outcomes. A preoperative score prediction system was established, in which patients with ≥2 points had a 19.4 % risk of poor postoperative gastrointestinal recovery. Higher-quality prospective studies should be performed to achieve more precise risk stratification and to construct a more accurate prediction system.

Preoperative optimization of the radical cystectomy patient: Current state and future directions

Radical cystectomy (RC) is associated with high rates of morbidity and mortality despite adoption of robotics and implementation of enhanced recovery after surgery protocols. There have been increased efforts to investigate preoperative optimization through comprehensive nutritional evaluation, preoperative supplementation, and prehabilitation outside of previously described enhanced recovery after surgery protocols to reduce mortality and morbidity from RC. In this review, we summarize and evaluate the current literature on preoperative assessment and optimization in RC.

Preoperative Nutritional Status and Enhanced Recovery after Surgery (ERAS) Prior to Radical Cystectomy: A Review of the Literature

Preoperative nutritional status is an important and modifiable risk factor of a patient's recovery and outcome after radical cystectomy. There are multiple malnutrition screening tools and treatment options. In this review, we discuss the best indicators of this condition and how to optimize nutrition status prior to radical cystectomy.

Immunonutrition in Radical Cystectomy: State of the Art and Perspectives

Preoperative nutritional status is a pivotal aspect to consider in patients with cancer undergoing radical cystectomy (RC), as those at risk of malnutrition or already malnourished are more prone to post-surgical complications. The loss of muscle mass is a major consequence of cancer-related malnutrition. It is associated with increased risk of hospital readmission, longer hospitalization, and higher mortality. Nowadays, the close relationship between nutritional and immunological aspects under stressful conditions, such as surgery, represents an emerging scientific and clinical issue. Indeed, the synergistic action of reduced food intake and systemic inflammation generates metabolic derangements with tissue catabolism, including skeletal muscle breakdown, which is, in turn, associated with immune system dysfunction. In order to offer an additional immune-nutritional boost to the post-surgical phase, particularly in malnourished patients, nutritional support may include oral nutritional supplements and/or enteral formulas enriched with specific nutrients such as omega-3 fatty acids, arginine, glutamine, and nucleotides, with acknowledged immune-modulating effects. In the present narrative review, we addressed the state of the art of the available scientific literature on the benefit of immunonutrition in patients undergoing RC for cancer and suggest possible future perspectives to be explored. Although the role of immunonutrition was found to be little explored in the context of urologic oncology, the preliminary available data on radical cystectomy, summarized in the present paper, are promising and suggest that it may improve postoperative outcomes through immunomodulation, regardless of nutritional status before surgery.

Association Between Antibiotic Prophylaxis Before Cystectomy or Stent Removal and Infection Complications: A Systematic Review

CONTEXT

Patients undergoing radical cystectomy frequently suffer from infectious complications, including urinary tract infections (UTIs) and surgical site infections (SSIs) leading to emergency department visits, hospital readmission, and added cost.

OBJECTIVE

To summarize the literature regarding perioperative antibiotic prophylaxis, ureteric stent usage, and prevalence of infectious complications after cystectomy.

EVIDENCE ACQUISITION

A systematic review of PubMed/Medline, EMBASE, Cochrane Library, and reference lists was conducted.

EVIDENCE SYNTHESIS

We identified 20 reports including a total of 55 306 patients. The median rates of any infection, UTIs, SSIs, and bacteremia were 40%, 20%, 11%, and 6%, respectively. Perioperative antibiotic prophylaxis differed substantially between reports. Perioperative antibiotics were used only during surgery in one study but were continued over several days after surgery in all other studies. Empirical use of antibiotics for 1-3 d after surgery was described in 12 studies, 3-10 d in two studies, and >10 d in four studies. Time to stent removal ranged from 4 to 25 d after cystectomy. Prophylactic antibiotics were used before stent removal in nine of 20 studies; two of these studies used targeted antibiotics based on urine cultures from the ureteric stents, and the other seven studies used a single shot or 2 d of empirical antibiotics. Studies with any prophylactic antibiotic before stent removal found a lower median percentage of positive blood cultures after stent removal than studies without prophylactic antibiotics before stent removal (2% vs 9%).

CONCLUSIONS

We confirmed a high proportion of infectious complications after cystectomy, and a heterogeneous pattern of choice and duration of antibiotics during and after surgery or stent removal. These findings highlight a need for further studies and support quality prospective trials.

PATIENT SUMMARY

In this review, we observed wide variability in the use of antibiotics before or after surgical removal of the bladder.

Updates on enhanced recovery after surgery for radical cystectomy

Enhanced Recovery after Surgery (ERAS) is a multimodal pathway that provides evidence-based guidance for improving perioperative care and outcomes in patients undergoing surgery. In 2013, the ERAS society released its original guidelines for radical cystectomy (RC) for bladder cancer (BC), adopting much of its supporting data from colorectal literature. In the last decade, growing interest in ERAS has increased RC-specific ERAS research, including prospective randomized controlled trials (RCTs). Collective data suggest ERAS contributes to improved complication rates, decreased hospital length-of-stay, and/or time to bowel recovery. Various institutions have adopted modified versions of the ERAS pathway, yet there remains a lack of consensus on the efficacy of specific ERAS items and standardization of the protocol. In this review, we summarize updated evidence and practice patterns of ERAS pathways for RC since the introduction of the original 2013 guidelines. Novel target interventions, including use of immunonutrition, prehabilitation, alvimopan, and methods of local analgesia are reviewed. Finally, we discuss barriers to implementing and future steps in advancing the ERAS movement.