Intestinal obstruction secondary to enteral feedings in burn trauma patients

Association of early dietary fiber intake and mortality in septic patients with mechanical ventilation based on MIMIC IV 2.1 database: a cohort study

BACKGROUND

Whether early dietary fiber intake in septic patients is associated with a better clinical prognosis remains unclear, especially the time and the amount. Therefore, we assessed the association between early dietary fiber intake and clinical outcomes in septic patients by examining an extensive database.

METHODS

We conducted a retrospective cohort study using data from the MIMIC IV 2.1 database, focusing on consecutive septic patients requiring mechanical ventilation in medical or mixed medical-surgical ICUs. We collected patient demographics and nutritional data. Dietary fiber amounts were calculated according to enteral nutrition instructions from manufacturers within the first 72 h after admission. After adjusting for covariates, we employed restricted cubic spline (RCS) regression to investigate the relationship between fiber intake (FI) and 28-day mortality. Patients were categorized into three groups based on their fiber index (FI) within 72 h of admission: low fiber index (LFI) group when FI was < 3 g/(%), medium fiber index (MFI) group when FI ranged from 3 to 35 g(%), and high fiber index (HFI) group when FI ≥ 35 g(%). Univariate and multivariate Cox proportional hazards regression models were utilized to assess the association between early FI and 28-day mortality. We ultimately employed Kaplan-Meier (KM) curves and log-rank test visually represent the association between FI and 90-day mortality. The second outcomes include ICU-acquired infections and the hospital and ICU death, length of hospital and ICU stay, and length of mechanical ventilation.

RESULTS

Among 1057 subjects, 562 (53.2%) were male, with a median age of 64.8 years (IQR 53.4-75.2). We observed a J-shaped relationship between FI and 28-day mortality. The MFI group exhibited the lowest 28-day mortality [adjusted HR 0.64 (0.45-0.91), p = 0.013] and the lowest rate of hospital mortality [adjusted OR 0.60 (0.39-0.93), p = 0.022], with no statistically significant differences noted in the HFI group when compared to the LFI group. Similar patterns were observed for 60-day and 90-day mortality. However, no statistically significant differences were observed in other secondary outcomes after adjusting for covariates.

CONCLUSION

Early medium fiber index intake improved 28-day mortality and lower hospital mortality in septic M/SICU patients on mechanical ventilation.

Nonocclusive mesenteric ischemia: A rare but lethal complication of enteral nutrition in critically ill patients

BACKGROUND

The American Society for Parenteral and Enteral Nutrition (ASPEN)/ Society of Critical Care Medicine and the European Society for Clinical Nutrition and Metabolism guidelines recognize that critically ill patients receiving stable, low doses of vasopressors have experienced the advantages of early initiation of enteral nutrition (EN). However, clinical questions remained unanswered including vasopressor combinations associated with complications, the advent of other therapies during hypotensive states, as well as the volume and content of EN that might contribute to the development of a nonocclusive mesenteric ischemia (NOMI).

PRESENTATION

A 68-year old male with a history of hypertension, hyperlipidemia, atrial fibrillation, coronary artery disease with two-vessel bypass grafting, and peripheral vascular disease underwent subtotal excision of an infected right axillofemoral-femoral bypass graft. Postoperatively, EN was held because of hemodynamic instability and postsurgical complications. A fiber-free, high-protein, and low-residue formula was started at 10 ml/h while the patient was receiving stable doses of midodrine, norepinephrine, and vasopressin. Despite advancement of tube-feed rates to goal, nasogastric output never exceeded 300 ml. Computerized tomography of the abdomen showed diffuse bowel distention with pneumatosis, concerning for bowel ischemia. No surgical interventions were pursued, and the patient died.

CONCLUSIONS

Our patient developed NOMI postoperatively while receiving EN. Further studies addressing EN route, trophic vs full EN, recommended formula, the safety of vasoactive agents, the addition of fiber to EN, and continuous venovenous hemodiafiltration in relation to NOMI are needed, as there continues to be clinical controversy regarding these topics.

Fiber in the ICU: Should it Be a Regular Part of Feeding?

PURPOSE OF REVIEW

To highlight the controversy of fiber use in the current critical care nutrition guidelines; review the effect of fiber on the gut microbiota in the critically ill; and examine the data on fiber and outcomes in the intensive care setting.

RECENT FINDINGS

Fiber is increasingly recognized as a necessary component of colonic health and nutrition support. In critical illness there is a shift toward gut dysbiosis and immune dysregulation. Through fermentation and the generation of short-chain fatty acids, fiber has a role in maintaining intestinal homeostasis, immune function, and supporting commensal bacteria. In contrast to fermentable fiber, recent animal models suggest that non-fermentable fiber can also favorably alter intestinal homeostasis in a mechanism distinct from short chain fatty acids. In the critically ill, RCTs and meta-analyses suggest that soluble and mixed fiber supplemented enteral nutrition can reduce diarrhea and is well tolerated. Based on limited data, there may be benefits in reducing length of hospital stay, certain infections, and glucose metabolism. Nonetheless, the role of fiber enriched nutrition in critically ill patients is controversial as evident in the conflicting guidelines. Despite shortcomings in the literature, soluble and mixed fiber supplemented enteral nutrition is safe and beneficial in most hemodynamically stable intensive care patients. More research is necessary to determine optimal fiber composition.

Safety of Using Enteral Nutrition Formulations Containing Dietary Fiber in Hospitalized Critical Care Patients: A Systematic Review and Meta-Analysis

Enteral nutrition (EN) is the preferred route of nutrition support for patients with critical illness undergoing intensive care. Experts in the field caution against using fiber during EN because of perceived adverse patient outcomes; however, a comprehensive assessment of this topic is not evident to date. In this systematic review and meta-analysis, we searched four databases from inception to April 20, 2020, for studies on adverse events or health outcomes associated with using EN formulations containing fiber in hospitalized adults with critical illness. Nineteen articles were included. Random-effects meta-analysis models showed significantly lower diarrhea scores for fiber groups compared with nonfiber groups (pooled mean difference: -2.78; 95% CI, -4.10 to -1.47) but mixed results for risk of diarrhea between groups, depending on measures used for diarrhea (Hart and Dobb scale, pooled risk ratio [RR]: 0.68; 95% CI, 0.45-1.02; other diarrhea scales, pooled RR: 0.42; 95% CI, 0.20-0.89). Models showed 39% lower risk of gastrointestinal (GI) complications overall for fiber compared with nonfiber groups (pooled RR: 0.61; 95% CI, 0.47-0.79) but no group differences for individual GI complications, mortality, and intensive care unit or hospital length of stay. Analyses stratified by soluble- or mixed-fiber interventions reduced heterogeneity in models but showed identical conclusions. EN formulas with fiber may help reduce incidence and severity of diarrhea and GI complications overall in critically ill patients, without increased risk of other adverse events. Bias among specific GI measures indicates more high-quality studies are needed to verify these conclusions.

Colonic perforation following major burns: Experience from a burns center and a systematic review

BACKGROUND

Major burns complicated by stress ulceration and perforation of the stomach or duodenum is a recognized clinical phenomenon. Colonic perforation in burns patients is not common, and the overall incidence, diagnosis, intervention undertaken and mortality is incompletely described in the literature.

METHOD

We performed a systematic review of the literature on severe burns resulting in colonic perforation during the initial admission period. Relevant studies from January 1975 to June 2020 were retrieved from MEDLINE and EMBASE databases. Patient demographics, co-morbidities, total body surface area (TBSA) and anatomical region of burn, site of colonic perforation and management, nutrition, sepsis and microbiology, length of stay and overall outcome were extracted. We present a case series of five burns patients who had colonic perforations in our Specialist Burns Center.

RESULTS

We identified 54 studies, of which nine (two case series and seven case reports) met the inclusion criteria. Colonic perforation following burns was most common in middle-aged male patients with a proportion of patients having a history of mental health issues. In most cases, the TBSA associated with a colonic perforation was ≥30% (11/16 patients, 69%). Perforations mainly affected the right side of the colon (12/16 patients, 75%), usually occurring after the second week of admission (13/16 patients, 81%). Right-sided colonic perforations were associated with an increased mortality rate compared to left-sided perforations (42% vs 25%).

CONCLUSIONS

The current literature is mainly limited to case series and case reports and confirms that colonic perforations in burns patients are rare. Colonic perforations are related to the systemic effect of burn injuries including sepsis and gastrointestinal stasis. We have identified patients who are at higher risk of developing colonic perforations and have described the common findings in these patients. Through greater awareness early diagnosis and prompt intervention may be achieved to improve outcomes and reduce associated morbidity and mortality.

Gastrointestinal obstruction secondary to enteral nutrition bezoar: A case report

BACKGROUND

Post-operative enteral nutrition via gastric or jejunal feeding tubes is a common and standard practice in managing the critically ill or post-surgical patient. It has its own set of complications, including obstruction, abscess formation, necrosis, and pancreatitis. We present here a case of small bowel obstruction caused by enteral nutrition bezoar. It is the second recorded incidence of this complication after pancreaticoduodenectomy in the medical literature.

CASE SUMMARY

The 70-year-old female presented to our institution for a pancreaticoduodenectomy (Whipple’s procedure) for pancreatic adenocarcinoma. On day 5 post-operative, having failed to progress and developing symptoms of small bowel obstruction, she underwent a computed tomography scan, which showed features of mechanical small bowel obstruction. Following this, she underwent an emergency laparotomy and small bowel decompression. The recovery was long and protracted but, ultimately, she was discharged home. A literature search of reports from 1966-2020 was conducted in the MEDLINE database. We identified eight articles describing a total of 14 cases of small bowel obstruction secondary to enteral feed bezoar. Of those 14 cases, all but 4 occurred after upper gastrointestinal surgery; all but 1 case required further surgical intervention for deteriorating clinical picture. The postulated causes for this include pH changes, a reduction in pancreatic enzymes and gastric motility, and the use of opioid medication.

CONCLUSION

Enteral feed bezoar is a complication of enteral feeding. Despite rare incidence, it can cause significant morbidity and potential mortality.

Gastrointestinal obstruction caused by solidification and coagulation of enteral nutrition: pathogenetic mechanisms and potential risk factors

Enteral nutrition (EN) is preferred in order to provide nutrition and reduce catabolism in critically ill patients. Recent studies suggest that the use of EN is successful and complications are rare. However, an underestimated mechanical complication of tube feedings seen in critically ill patients is the coagulation and solidification of the EN causing gastrointestinal obstruction. This report describes two clinical cases (1.23% of all cases seen at our clinic) of obstruction and perforation of the small bowel secondary to the solidification of EN. The understanding and early recognition of this potential complication are essential for the prevention and successful treatment of this condition.

A rare case report of multiple myeloma presenting with paralytic ileus and type II respiratory failure due to hypercalcemic crisis

RATIONALE

Paralytic ileus is characterized by the signs and symptoms of intestinal obstruction but without any mechanical lesions in the intestinal lumen. Several medical and surgical conditions can lead to this ailment, such as electrolyte disturbances that impair intestinal motility. However, hypercalcemia secondary to multiple myeloma as a major cause of paralytic ileus has rarely been reported.

PATIENT CONCERNS

The patient got severe constipation with difficulty in the passage of both gas and feces for 7 days.

DIAGNOSES

The patient was diagnosed with a small intestinal obstruction initially and then developed type II respiratory failure. Investigations revealed hypercalcemic crisis, and examination of a bone marrow aspirate was consistent with multiple myeloma.

INTERVENTIONS

Conservative treatment was administered for the intestinal obstruction, consisting of food and water deprivation, gastrointestinal decompression, colonic irrigation, intravenous fluid transfusion, anti-inflammatory therapy. Invasive respiratory support was provided after type II respiratory failure occurred and salmon calcitonin was used to reduce the blood calcium level. Further therapy was given by the Department of Hematology and Oncology in our hospital after the diagnosis of multiple myeloma.

OUTCOMES

Spontaneous respiration and gastrointestinal function were restored after the correction of hypercalcemia.

LESSONS

An appropriate diagnostic approach is needed in emergency practice to identify the paralytic ileus and type II respiratory failure caused by hypercalcemia secondary to multiple myeloma.

Efficacy of commercial formulas in comparison with home-made formulas for enteral feeding: A critical review

Background: In several disease conditions, patients must inevitably be nourished by enteral feeding (EF). Though in many countries, commercial formulas are routinely used for EF, in Iran still home-made formulas are commonly employed as commercial formulas are not covered by insurance. This may pose patients to malnutrition and bring about further costs. The aim of this study was to evaluate the efficacy of EF commercial formulas in comparison with home-made formulas and thus to make further evidence for insurance policy-making

Methods: Medline, Cochrane, Embass and Center for Review & Dissemination (CRD) as well as IranDoc and SID databases were searched. Keywords included formula, ICU, and enteral nutrition or tube feeding. No clinical trial study on the efficacy of EF formulas was found. Therefore, the compositions of available formulas and their cost-effectiveness were evaluated based on the clinical guidelines of scientific bodies such as American Society for Parenteral and Enteral Nutrition (ASPEN), European Society for Parenteral and Enteral Nutrition (ESPEN) and relative articles available in PubMed. In addition, the expert opinions were also taken into consideration.

Results: Domestic commercial formulas seemed to less merit dietary recommended intakes, i.e. the amount of some nutrients were much higher, and some others were much lower than the recommended values. The amount of several micronutrients including vitamins B1, B6, C, D and K, as well as iron, calcium and magnesium were not sufficient to meet the body needs in most commercial formulas upon receiving 2000 kilocalories and less.

Conclusion: Clinical studies on the efficacy of commercial formulas in comparison with home-made formulas are needed. Meanwhile, making suitable conditions for increasing the diversity of artificial nutrition products in the market would help clinical nutritionists to make better choices according to their patients conditions and to reduce the costs, as well.

Critical Care Nutrition Support Best Practices: Key Differences Between Canadian and American Guidelines

Since 2015, Society of Critical Care Medicine/American Society for Parenteral and Enteral Nutrition and Canadian critical care nutrition support guidelines have both been updated. Despite a similar evidentiary basis, there remain key differences between guideline recommendations. These differences in recommendations may pose confusion for the clinician and may encumber widespread applicability. The aim of this review was to enhance practitioner confidence in applying critical care nutrition support guidelines to patient care in their settings by outlining the similarities and differences between the American and Canadian methods for guideline development and describing the key differences and reasons behind the differences.

Feeding the Open Abdomen

BACKGROUND

The purpose of this study was to determine if early enteral nutrition improves outcome for trauma patients with an open abdomen (OA).

METHODS

Retrospective review was used to identify 78 patients who required an OA for >or=4 hospital days, survived, and had available nutrition data. Demographic data and nutrition data comprising enteral nutrition initiation day and daily % target goal were collected. Patients were divided into 2 groups: early enteral feeding (EEN), initiated <or=4 days within celiotomy; and late enteral feeding (LEN; >4 days). Outcomes included infectious complications, early closure of the abdominal cavity (<8 days from original celiotomy), and fistula formation.

RESULTS

Fifty-three of 78 (68%) patients were men, with a mean age of 35 years; 74% had blunt trauma. Forty-three of 78 (55%) patients had EEN, whereas 35 of 78 (45%) had LEN. There was no difference with respect to demographics, injury severity, or infectious complication rates. Thirty-two of 43 (74%) patients with EEN had early closure of the abdominal cavity, whereas 17 of 35 (49%) patients with late feeding had early closure (p = .02). Four of 43 (9%) patients with EEN demonstrated fistula formation, whereas 9 of 35 (26%) patients with late feeding formed fistulae (p = .05). The EEN group had lower hospital charges (p = .04) by more than $50,000.

CONCLUSIONS

EEN in the OA was associated with (1) earlier primary abdominal closure, (2) lower fistula rate, (3) lower hospital charges.

Nutrition Support in Adult Trauma Patients

Nutrition supplementation is paramount to the care of severely injured patients. Despite its widespread use in trauma patients, many areas of clinical practice remain controversial. The purpose of this paper is to critically review the literature studying the use of enteral vs parenteral nutrition (PN) and to provide the rationale for early enteral nutrition. Additional controversies confronting clinicians are reviewed, including the use of immune-enhancing agents and the optimal site for enteral nutrition delivery (gastric vs small intestinal). Evidence-based recommendations for clinical practice are presented when available.

Tolerability of Enteral Nutrition in Mechanically Ventilated Patients With Septic Shock Who Require Vasopressors

Purpose:

Enteral nutrition (EN) is often held in patients receiving vasopressor support for septic shock. The rationale for this practice is to avoid mesenteric ischemia. The objective of this study is to evaluate the tolerability of EN in patients with septic shock who require vasopressor support and determine factors associated with tolerance of EN.

Materials and Methods:

This was a single-center retrospective review of adult patients admitted to the intensive care unit with a diagnosis of septic shock and an order for EN. The primary outcome was EN tolerance. Secondary outcomes included time to initiation of EN from the start of vasopressor(s), length of stay, and mortality.

Results:

A total of 120 patients were included. Sixty-two percent of patients tolerated EN. The most common reason for intolerance of EN was gastric residuals > 250 mL (74%). No reports of mesenteric ischemia were observed. A multivariate analysis demonstrated that patients with septic shock initiating EN within 48 hours and receiving norepinephrine-equivalent doses of 0.14 μg/kg/min or less were more likely to tolerate EN.

Conclusion:

Based on our observation, early EN may be tolerated and safely administered in patients with septic shock who are adequately fluid resuscitated and receive doses of < 0.14 μg/kg/min of norepinephrine equivalents.

Enteral nutrition formula selection: current evidence and implications for practice

Many new enteral nutrition (EN) formulas have been created over the past several decades with a variety of intended uses. Although each is intended to promote improved outcomes, research is often unclear and, in many cases, conflicting. It is important to note that EN products are considered medical foods by the U.S. Food and Drug Administration and therefore do not have to complete premarket review or approval and are not regulated to the same extent as pharmaceuticals. While standard EN formulas are designed to meet the basic macro- and micronutrient requirements of individuals who cannot meet nutrition needs orally, specialty EN products have been developed to exhibit pharmacologic properties, such as immune-enhancing formulas containing arginine, glutamine, nucleotides, and ω-3 fatty acids. With the vast number of products available, rising costs of healthcare, and the drive toward evidence-based practice, it is imperative that clinicians carefully consider research regarding use of specialty formulas, paying close attention to the quality, patient population, clinical end points, and cost to patient and/or facility.

Use of methylnaltrexone to induce laxation in acutely injured patients with burns and necrotizing soft-tissue infections

The routine use of high-dose opioids for analgesia in patients with acute burns and soft-tissue injuries often leads to the development of opioid-induced constipation. The opioid antagonist methylnaltrexone (MLTX) reverses narcotic-related ileus without affecting systemic pain treatment. The authors' burn center developed a bowel protocol that included administration of MLTX for relief of opioid-induced constipation after other methods failed. The authors performed a retrospective review of patients with acute burns or necrotizing soft-tissue infections, who had been given subcutaneous MLTX to induce laxation. All patients who received MLTX were included and all administrations of the drug were included in the analysis. The primary outcome examined was time to laxation from drug administration. Forty-eight patients received MLTX a total of 112 times. Six patients were admitted with soft-tissue injuries and the rest suffered burns with an average TBSA of 17%. The median patient age was 41 years and the majority (75%) were men. Administration of a single dose of MLTX resulted in laxation within 4 hours in 38% of cases, and within 24 hours in 68%. Patients given MLTX received an average of 174 mg morphine equivalents daily for pain control. MLTX was given after an average of 52 hours since the last bowel movement. As this experience has evolved, it has been incorporated into an organized bowel protocol, which includes MLTX administration after other laxatives have failed. MLTX is an effective laxation agent in patients with burn and soft-tissue injuries, who have failed conventional agents.

Early enteral nutrition in critically ill patients with hemodynamic instability: an evidence-based review and practical advice

Early enteral nutrition (EEN) in critically ill patients is associated with significant benefit as well as elevated risk of complications. Concomitant use of EEN with vasopressors has been associated with nonocclusive bowel necrosis in critically ill patients with hemodynamic instability. The decision when to initiate enteral nutrition in hemodynamically unstable patients that require vasoactive substances remains a clinical dilemma. This review summarizes the effect of EEN and vasoactive agents on gastrointestinal blood flow and perfusion in critically ill patients, based on current evidence. Animal and clinical data involving simultaneous administration of EEN and vasoactive agents for hemodynamic instability are reviewed, and the factors related to the safety and effectiveness of EEN support in this patient population are analyzed. Moreover, practical recommendations are provided. Additional randomized clinical trials are warranted to provide cutting-edge evidence-based guidance about this issue for practitioners of critical care.

Nutrition in the ICU: an evidence-based approach

Providing artificial nutrition is an important part of caring for critically ill patients. However, because of a paucity of robust data, the practice has been highly variable and often based more on dogma than evidence. A number of studies have been published investigating many different aspects of critical care nutrition. Although the influx of data has better informed the practice, the results have often been conflicting or counter to prevailing thought, resulting in discordant opinions and different interpretations by experts in the field. In this article, we review and summarize the data from a number of the published studies, including studies investigating enteral vs parenteral nutrition, supplementing enteral with parenteral nutrition, and use of immunonutrition. In addition, published studies informing the practice of how best to provide enteral nutrition will be reviewed, including the use of trophic feedings, gastric residual volumes, and gastric vs postpyloric tube placement.

The effect of fibers on coagulation of casein-based enteral nutrition in an artificial gastric digestion model

A serious complication seen in critically ill patients is the solidification of enteral nutrition causing gastrointestinal obstruction.

The safety and efficacy of parenteral nutrition among pediatric patients with burn injuries

OBJECTIVE

Although enteral nutrition is the ideal mode of nutritional support following burn injury, it is often interrupted during episodes of severe sepsis and hemodynamic instability, leading to significant energy and protein deficits. Parenteral nutrition is not commonly used in burn centers due to concerns that it will lead to hyperglycemia, infection, and increased mortality. However, parenteral nutrition is often utilized in our burn unit when goal rate enteral nutrition is not feasible.To determine the safety and efficacy of a standardized protein-sparing parenteral nutrition protocol in which glucose infusion is limited to 5-7 mg/kg/hour.

DESIGN

Retrospective observational study.

SETTING

Pediatric burn hospital.

PATIENTS

A retrospective medical record review of all children admitted to our hospital with burns ≥ 30% total body surface area was conducted. Only patients admitted within one week of injury and who survived > 24 hours after admission were included in this study.

INTERVENTIONS

None.

MEASUREMENTS AND MAIN RESULTS

Of the 105 patients who met the inclusion criteria, 96 (91%) received parenteral nutrition or a combination of parenteral nutrition and enteral nutrition at some point during their care. Nine patients received only enteral nutrition. Demographic data were similar between groups. Protein intake was significantly higher in the parenteral nutrition group. Incidence of catheter-related blood infections did not differ between groups. Use of parenteral nutrition was not associated with blood or respiratory infections. Overall mortality rate was low (4%), as most patients (96%) achieved wound closure and were discharged home.

CONCLUSIONS

Judicious use of parenteral nutrition is a safe and effective means of nutritional support when goal enteral nutrition cannot be achieved. A hypocaloric, high-nitrogen parenteral nutrition solution can reduce energy and protein deficits while minimizing complications commonly associated with parenteral nutrition usage.

Guidelines, guidelines, guidelines: what are we to do with all of these North American guidelines?

Over the past decade, clinical guidelines for nutrition therapy in the critically ill have been developed by different North American societies. To avoid target audience confusion and uncertainty, there is a need to undergo a review of the content of these guidelines. In this review, the authors compared the grading systems, the levels of evidence used, and the content of North American nutrition clinical guidelines. The 3 clinical guidelines that met their search criteria and hence were included in the comparison are the Canadian Clinical Practice Guidelines, the American Dietetics Association's evidence-based guideline for critical illness, and the Society of Critical Care Medicine and American Society of Parenteral and Enteral Nutrition's joint guideline. Through their comparison, the authors have shown that although there are several topics where there is a similar direction of recommendation across the 3 societies/organizations, there are stark contrasts among many of the recommendations. These major differences can be attributed to the admission of different populations, lower levels of evidence or expert opinion into the guideline production process, lack of clarity in the link between the evidence and the recommendation, and lack of uniformity in the reporting of levels of evidence and grades of recommendation. The authors have identified the need for the North American nutrition organizations to harmonize the development of future nutrition guidelines in a timely way, so that they remain current and up-to-date. Furthermore, guideline users need to be aware of the dissimilarities in these guidelines before applying the recommendations to their daily practice.

The management of the open abdomen in trauma and emergency general surgery: part 1-damage control

BACKGROUND

The open abdomen technique, after both military and civilian trauma, emergency general or vascular surgery, has been used in some form for the past 30 years. There have been several hundred citations on the indications and the management of the open abdomen. Eastern Association for the Surgery of Trauma practice management committee convened a study group to organize the world's literature for the management of the open abdomen. This effort was divided into two parts: damage control and the management of the open abdomen. Only damage control is presented in this study. Part 1 is divided into indications for the open abdomen, temporary abdominal closure, staged abdominal repair, and nutrition support of the open abdomen.

METHODS

A literature review was performed for more than 30 years. Prospective and retrospective studies were included. The reviews and case reports were excluded. Of 1,200 articles, 95 were selected. Seventeen surgeons reviewed the articles with four defined criteria. The Eastern Association for the Surgery of Trauma primer was used to grade the evidence.

RESULTS

There was only one level I recommendation. A patient with documented abdominal compartment syndrome should undergo decompressive laparotomy.

CONCLUSION

The open abdomen technique remains a heroic maneuver in the care of the critically ill trauma or surgical patient. For the best outcomes, a protocol for the indications, temporary abdominal closure, staged abdominal reconstruction, and nutrition support should be in place.

Feeding the injured intestine: enteral nutrition in the critically ill patient

PURPOSE OF REVIEW

The utilization of enteral nutrition in critically ill patients is frequently suboptimal. This may be due, in part, to ongoing controversies regarding appropriate use of enteral support, but there are also perceived barriers to its use even when there is good evidence that it can be given. This review was undertaken to outline some of these controversies and barriers to use of enteral nutrition in the ICU.

RECENT FINDINGS

Although the advantages of enteral nutrition may have been overstated, it remains preferable to parenteral nutrition for support of critically ill patients. Early initiation of enteral support is a reasonable approach. Many patients with perceived contraindications to enteral therapy are actually good candidates for its use. Frequent interruptions in enteral nutrition lead to suboptimal nutrient delivery, but might be overcome by use of specific protocols emphasizing safe and effective utilization of enteral support.

SUMMARY

Use of enteral nutritional support is recommended for critically ill patients requiring specialized nutritional support. Barriers to its use could be overcome by better educating providers about indications for use and by developing methods to avoid undue interruption of therapy.

ESPEN Guidelines on Enteral Nutrition: Surgery including organ transplantation

Enhanced recovery of patients after surgery ("ERAS") has become an important focus of perioperative management. From a metabolic and nutritional point of view, the key aspects of perioperative care include: Enteral nutrition (EN) by means of oral nutritional supplements (ONS) and if necessary tube feeding (TF) offers the possibility of increasing or ensuring nutrient intake in cases where food intake is inadequate. These guidelines are intended to give evidence-based recommendations for the use of ONS and TF in surgical patients. They were developed by an interdisciplinary expert group in accordance with officially accepted standards and are based on all relevant publications since 1980. The guideline was discussed and accepted in a consensus conference. EN is indicated even in patients without obvious undernutrition, if it is anticipated that the patient will be unable to eat for more than 7 days perioperatively. It is also indicated in patients who cannot maintain oral intake above 60% of recommended intake for more than 10 days. In these situations nutritional support should be initiated without delay. Delay of surgery for preoperative EN is recommended for patients at severe nutritional risk, defined by the presence of at least one of the following criteria: weight loss >10-15% within 6 months, BMI<18.5 kg/m(2), Subjective Global Assessment Grade C, serum albumin <30 g/l (with no evidence of hepatic or renal dysfunction). Altogether, it is strongly recommended not to wait until severe undernutrition has developed, but to start EN therapy early, as soon as a nutritional risk becomes apparent.

Pneumatosis Intestinalis in a Burn Patient: Case Report and Literature Review

Pneumatosis Intestinalis (PI) is a rare condition characterized by gas in the intestinal wall. PI is not a disease in itself but a sign of an underlying problem. It is associated with a wide variety of underlying disorders, ranging from benign to life-threatening. When found, it should prompt a search for the underlying cause. Diagnostic efforts should be aimed at ruling out catastrophic problems such as intestinal ischemia and necrosis. The presence of peritonitis, rectal bleeding, portomesenteric venous gas, and lactic acidosis are important factors to determine the best course of action. Burn patients have multiple risk factors for developing this condition. Despite this, PI is not well-described in the burn literature. We present here a case report, a brief review of the literature, and clinical considerations.