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Philpott JD, Hovnanian KMR, Stefater-Richards M, Mehta NM, Martinez EE. The enteroendocrine axis and its effect on gastrointestinal function, nutrition, and inflammation. Curr Opin Crit Care 2024; 30:290-297. [PMID: 38872371 PMCID: PMC11295110 DOI: 10.1097/mcc.0000000000001175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
PURPOSE OF REVIEW Gastrointestinal (GI) dysfunction limits enteral nutrition (EN) delivery in critical illness and contributes to systemic inflammation. The enteroendocrine (EE) axis plays an integral role in this interface between nutrition, inflammation, and GI function in critical illness. In this review, we present an overview of the EE system with a focus on its role in GI inflammation and function. RECENT FINDINGS Enteroendocrine cells have been primarily described in their role in macronutrient digestion and absorption. Recent research has expanded on the diverse functions of EE cells including their ability to sense microbial peptides and metabolites and regulate immune function and inflammation. Therefore, EE cells may be both affected by and contribute to many pathophysiologic states and interventions of critical illness such as dysbiosis , inflammation, and alternative EN strategies. In this review, we present an overview of EE cells including their growing role in nonnutrient functions and integrate this understanding into relevant aspects of critical illness with a focus on EN. SUMMARY The EE system is key in maintaining GI homeostasis in critical illness, and how it is impacted and contributes to outcomes in the setting of dysbiosis , inflammation and different feeding strategies in critical illness should be considered.
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Affiliation(s)
- Jordan D. Philpott
- Department of Anesthesiology, Critical Care and Pain Medicine, Division of Critical Care, Boston Children’s Hospital, Boston, Massachusetts, USA
- Mucosal Immunology and Biology Research Center, Mass General for Children, Boston, Massachusetts, USA
| | - K. Marco Rodriguez Hovnanian
- Department of Anesthesiology, Critical Care and Pain Medicine, Division of Critical Care, Boston Children’s Hospital, Boston, Massachusetts, USA
- Mucosal Immunology and Biology Research Center, Mass General for Children, Boston, Massachusetts, USA
| | - Margaret Stefater-Richards
- Department of Medicine, Division of Endocrinology, Boston Children’s Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
| | - Nilesh M. Mehta
- Department of Anesthesiology, Critical Care and Pain Medicine, Division of Critical Care, Boston Children’s Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
| | - Enid E. Martinez
- Department of Anesthesiology, Critical Care and Pain Medicine, Division of Critical Care, Boston Children’s Hospital, Boston, Massachusetts, USA
- Mucosal Immunology and Biology Research Center, Mass General for Children, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
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2
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Lew CCH, Lee ZY, Day AG, Heyland DK. The correlation between gastric residual volumes and markers of gastric emptying: a post-hoc analysis of a randomized clinical trial. JPEN J Parenter Enteral Nutr 2021; 46:850-857. [PMID: 34292628 DOI: 10.1002/jpen.2234] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND The correlation between gastric residual volumes (GRV) and markers of gastric emptying (GE) in critically ill patients is unclear. This is especially true for ICU surgical patients as they are underrepresented in previous studies. METHODS We conducted a post-hoc analysis of a multicenter trial that investigated the effectiveness of a promotility drug in increasing enteral nutrition intake. Pharmacokinetic markers of GE [3-O-methylglucose (3-OMG) and acetaminophen] were correlated with GRV measurements. High-GRV was defined as one episode of >400 mL or two consecutive episodes of >250 mL, and delayed GE was defined as <20th percentile of the pharmacokinetic GE marker that had the strongest correlation with GE. RESULTS Out of 77 patients, 8 (10.4%) had high-GRV, and 15 (19.5%) had delayed GE. 3-OMG concentration at 60 mins had the strongest correlation with GRV (Rho: - 0.631), and high-GRV had low sensitivity (46.7%) but high specificity (98.4%) in discriminating delayed GE. The positive (87.5%) and negative (88.4%) predictive values were similar. There was a small sample of surgical patients (n = 14, 18.2%), and they had a significantly higher incidence of high-GRV (29% vs 6%, P: 0.032) and a trend towards delayed GE (36% vs 16%, p: 0.132) when compared to medical patients. CONCLUSION GRV reflects GE, and high-GRV is an acceptable surrogate marker of delayed GE. Based on our preliminary observation, surgical patients may have a higher risk of high-GRV and delayed GE. In summary, GRV should be monitored to determine if complex investigations or therapeutic interventions are warranted. This article is protected by copyright. All rights reserved.
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Affiliation(s)
| | - Zheng-Yii Lee
- Department of Anesthesiology, Faculty of Medicine, University of Malaya, Malaysia
| | - Andrew G Day
- Clinical Evaluation Research Unit, Kingston Health Science Centre, Kingston, ON, Canada
| | - Daren K Heyland
- Clinical Evaluation Research Unit, Kingston Health Science Centre, Kingston, ON, Canada.,Department of Critical Care Medicine, Kingston Health Science Centre, Kingston, ON, Canada
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Chapple LAS, Summers MJ, Weinel LM, Abdelhamid YA, Kar P, Hatzinikolas S, Calnan D, Bills M, Lange K, Poole A, O'Connor SN, Horowitz M, Jones KL, Deane AM, Chapman MJ. Effects of Standard vs Energy-Dense Formulae on Gastric Retention, Energy Delivery, and Glycemia in Critically Ill Patients. JPEN J Parenter Enteral Nutr 2021; 45:710-719. [PMID: 33543797 DOI: 10.1002/jpen.2065] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 11/20/2020] [Accepted: 12/14/2020] [Indexed: 02/05/2023]
Abstract
BACKGROUND Energy-dense formulae are often provided to critically ill patients with enteral feed intolerance with the aim of increasing energy delivery, yet the effect on gastric emptying is unknown. The rate of gastric emptying of a standard compared with an energy-dense formula was quantified in critically ill patients. METHODS Mechanically ventilated adults were randomized to receive radiolabeled intragastric infusions of 200 mL standard (1 kcal/mL) or 100 mL energy-dense (2 kcal/mL) enteral formulae on consecutive days in this noninferiority, blinded, crossover trial. The primary outcome was scintigraphic measurement of gastric retention (percentage at 120 minutes). Other measures included area under the curve (AUC) for gastric retention and intestinal energy delivery (calculated from gastric retention of formulae over time), blood glucose (peak and AUC), and intestinal glucose absorption (using 3-O-methyl-D-gluco-pyranose [3-OMG] concentrations). Comparisons were undertaken using paired mixed-effects models. Data presented are mean ± SE. RESULTS Eighteen patients were studied (male/female, 14:4; age, 55.2 ± 5.3 years). Gastric retention at 120 minutes was greater with the energy-dense formula (standard, 17.0 ± 5.9 vs energy-dense, 32.5 ± 7.1; difference, 12.7% [90% confidence interval, 0.8%-30.1%]). Energy delivery (AUC120 , 13,038 ± 1119 vs 9763 ± 1346 kcal/120 minutes; P = 0.057), glucose control (peak glucose, 10.1 ± 0.3 vs 9.7 ± 0.3 mmol/L, P = 0.362; and glucose AUC120 8.7 ± 0.3 vs 8.5 ± 0.3 mmol/L.120 minutes, P = 0.661), and absorption (3-OMG AUC120 , 38.5 ± 4.0 vs 35.7 ± 4.0 mmol/L.120 minutes; P = .508) were not improved with the energy-dense formula. CONCLUSION In critical illness, administration of an energy-dense formula does not reduce gastric retention, increase energy delivery to the small intestine, or improve glucose absorption or glucose control; instead, there is a signal for delayed gastric emptying.
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Affiliation(s)
- Lee-Anne S Chapple
- Intensive Care Unit, Royal Adelaide Hospital, Adelaide, South Australia, Australia
- Discipline of Acute Care Medicine, The University of Adelaide, Adelaide, South Australia, Australia
- Centre of Research Excellence in Translating Nutritional Science to Good Health, The University of Adelaide, Adelaide, South Australia, Australia
| | - Matthew J Summers
- Intensive Care Unit, Royal Adelaide Hospital, Adelaide, South Australia, Australia
- Discipline of Acute Care Medicine, The University of Adelaide, Adelaide, South Australia, Australia
| | - Luke M Weinel
- Intensive Care Unit, Royal Adelaide Hospital, Adelaide, South Australia, Australia
| | - Yasmine Ali Abdelhamid
- Discipline of Acute Care Medicine, The University of Adelaide, Adelaide, South Australia, Australia
- Department of Medicine and Radiology, The University of Melbourne, Melbourne Medical School,Royal Melbourne Hospital, Parkville, Australia
| | - Palash Kar
- Intensive Care Unit, Royal Adelaide Hospital, Adelaide, South Australia, Australia
- Discipline of Acute Care Medicine, The University of Adelaide, Adelaide, South Australia, Australia
| | - Seva Hatzinikolas
- Centre of Research Excellence in Translating Nutritional Science to Good Health, The University of Adelaide, Adelaide, South Australia, Australia
| | - Deborah Calnan
- Department of Nuclear Medicine, PET and Bone Densitometry, Royal Adelaide Hospital, Adelaide, South Australia, Australia
| | - Madison Bills
- Department of Nuclear Medicine, PET and Bone Densitometry, Royal Adelaide Hospital, Adelaide, South Australia, Australia
| | - Kylie Lange
- Centre of Research Excellence in Translating Nutritional Science to Good Health, The University of Adelaide, Adelaide, South Australia, Australia
| | - Alexis Poole
- Intensive Care Unit, Royal Adelaide Hospital, Adelaide, South Australia, Australia
- Discipline of Acute Care Medicine, The University of Adelaide, Adelaide, South Australia, Australia
| | - Stephanie N O'Connor
- Intensive Care Unit, Royal Adelaide Hospital, Adelaide, South Australia, Australia
- Discipline of Acute Care Medicine, The University of Adelaide, Adelaide, South Australia, Australia
| | - Michael Horowitz
- Centre of Research Excellence in Translating Nutritional Science to Good Health, The University of Adelaide, Adelaide, South Australia, Australia
| | - Karen L Jones
- Centre of Research Excellence in Translating Nutritional Science to Good Health, The University of Adelaide, Adelaide, South Australia, Australia
| | - Adam M Deane
- Department of Medicine and Radiology, The University of Melbourne, Melbourne Medical School,Royal Melbourne Hospital, Parkville, Australia
| | - Marianne J Chapman
- Intensive Care Unit, Royal Adelaide Hospital, Adelaide, South Australia, Australia
- Discipline of Acute Care Medicine, The University of Adelaide, Adelaide, South Australia, Australia
- Centre of Research Excellence in Translating Nutritional Science to Good Health, The University of Adelaide, Adelaide, South Australia, Australia
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Reintam Blaser A, Deane AM, Preiser J, Arabi YM, Jakob SM. Enteral Feeding Intolerance: Updates in Definitions and Pathophysiology. Nutr Clin Pract 2020; 36:40-49. [DOI: 10.1002/ncp.10599] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Affiliation(s)
- Annika Reintam Blaser
- Department of Intensive Care Medicine Lucerne Cantonal Hospital Lucerne Switzerland
- Department of Anaesthesiology and Intensive Care University of Tartu Tartu Estonia
| | - Adam M. Deane
- Department of Medicine and Radiology The University of Melbourne Melbourne Medical School Royal Melbourne Hospital Parkville Victoria Australia
| | | | - Yaseen M. Arabi
- College of Medicine King Saud bin Abdulaziz University for Health Sciences (KSAU‐HS) and King Abdullah International Medical Research Center Riyadh Saudi Arabia
| | - Stephan M. Jakob
- Department of Intensive Care Medicine University Hospital (Inselspital) Bern University of Bern Bern Switzerland
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5
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Martinez EE, Panciotti C, Pereira LM, Kellogg MD, Stylopoulos N, Mehta NM. Gastrointestinal Hormone Profiles Associated With Enteral Nutrition Tolerance and Gastric Emptying in Pediatric Critical Illness: A Pilot Study. JPEN J Parenter Enteral Nutr 2019; 44:472-480. [PMID: 31304610 DOI: 10.1002/jpen.1678] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 06/19/2019] [Accepted: 06/28/2019] [Indexed: 12/18/2022]
Abstract
BACKGROUND Enteral nutrition (EN) intolerance and delayed gastric emptying are prevalent in pediatric critical illness and limit EN delivery. Gastrointestinal (GI) hormones may be associated with EN intolerance and delayed gastric emptying in this cohort. METHODS We determined GI hormone levels, time to achieve 50% of EN goal, and gastric emptying in critically ill children. Total amylin, active ghrelin, total glucagon-like peptide-1 (GLP-1), total gastric inhibitory polypeptide, glucagon, and total peptide-YY (PYY) were measured by multiplex assay and cholecystokinin by ELISA. Lower concentrations of acetaminophen at 1 hour (C1h, µg/mL) using the acetaminophen absorption test defined delayed gastric emptying. Correlation, regression analyses, and a principal component analysis were used to examine the association between GI hormones and time to 50% EN goal and C1h. RESULTS GI hormones were measured in 14 of 21 patients with gastric emptying testing; median age of 11.2 years (6.74-16.3) and 50% male. Increasing hormone levels from GI hormone profile 1 (GLP-1, glucagon, and amylin) correlated with greater time to reach 50% EN goal (R2 = 0.296, P = 0.04). Decreasing hormone levels from GI hormone profile 2 (PYY and ghrelin) correlated with lower C1h and slower gastric emptying (R2 = 0.342, P = 0.02). CONCLUSION GI hormone profiles are associated with time to achieve 50% of EN goal and gastric emptying in critically ill children. We have described a feasible model to study the role of GI hormones in this cohort, including the potential clinical applicability of GI hormone measurement in the management of delayed gastric emptying.
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Affiliation(s)
- Enid E Martinez
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital, Boston, Massachusetts, USA.,Division of Critical Care Medicine, Boston Children's Hospital, Boston, Massachusetts, USA.,Harvard Medical School, Boston, Massachusetts, USA
| | - Courtney Panciotti
- Department of Medicine, Division of Endocrinology, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Luis M Pereira
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital, Boston, Massachusetts, USA.,Harvard Medical School, Boston, Massachusetts, USA
| | - Mark D Kellogg
- Department of Laboratory Medicine, Boston Children's Hospital, Boston, Massachusetts, USA.,Harvard Medical School, Boston, Massachusetts, USA
| | - Nicholas Stylopoulos
- Department of Medicine, Division of Endocrinology, Boston Children's Hospital, Boston, Massachusetts, USA.,Harvard Medical School, Boston, Massachusetts, USA
| | - Nilesh M Mehta
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital, Boston, Massachusetts, USA.,Division of Critical Care Medicine, Boston Children's Hospital, Boston, Massachusetts, USA.,Center for Nutrition, Boston Children's Hospital, Boston, Massachusetts, USA.,Harvard Medical School, Boston, Massachusetts, USA
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Abstract
PURPOSE OF REVIEW Gastrointestinal dysmotility occurs frequently in the critically ill. Although the causes underlying dysmotility are multifactorial, both pain and its treatment with exogenous opioids are likely causative factors. The purpose of this review is to describe the effects of pain and opioids on gastrointestinal motility; outline the rationale for and evidence supporting the administration of opioid antagonists to improve dysmotility; and describe the potential influence opioids drugs have on the intestinal microbiome and infectious complications. RECENT FINDINGS Opioid drugs are frequently prescribed in the critically ill to alleviate pain. In health, opioids cause gastric dysmotility, yet the evidence for this in critical illness is inconsistent and limited to observational studies. Administration of opioid antagonists may improve gastrointestinal motility, but data are sparse, and these agents cannot be recommended outside of clinical trials. Although critical illness is associated with alterations in the microbiome, the extent to which opioid administration influences these changes, and the subsequent development of infection, remains uncertain. SUMMARY Replication of clinical studies from ambulant populations in critical care is required to ascertain the independent influence of opioid administration on gastrointestinal motility and infectious complications.
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7
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Deane AM, Chapman MJ, Reintam Blaser A, McClave SA, Emmanuel A. Pathophysiology and Treatment of Gastrointestinal Motility Disorders in the Acutely Ill. Nutr Clin Pract 2018; 34:23-36. [PMID: 30294835 DOI: 10.1002/ncp.10199] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Gastrointestinal dysmotility causes delayed gastric emptying, enteral feed intolerance, and functional obstruction of the small and large intestine, the latter functional obstructions being frequently termed ileus and Ogilvie syndrome, respectively. In addition to meticulous supportive care, drug therapy may be appropriate in certain situations. There is, however, considerable variation among individuals regarding what gastric residual volume identifies gastric dysmotility and would encourage use of a promotility drug. While the administration of either metoclopramide or erythromycin is supported by evidence it appears that, dual-drug therapy (erythromycin and metoclopramide) reduces the rate of treatment failure. There is a lack of evidence to guide drug therapy of ileus, but neither erythromycin nor metoclopramide appear to have a role. Several drugs, including ghrelin agonists, highly selective 5-hydroxytryptamine receptor agonists, and opiate antagonists are being studied in clinical trials. Neostigmine, when infused at a relatively slow rate in patients receiving continuous hemodynamic monitoring, may alleviate the need for endoscopic decompression in some patients.
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Affiliation(s)
- Adam M Deane
- Intensive Care Unit, Royal Melbourne Hospital, University of Melbourne, Parkville, Australia
| | - Marianne J Chapman
- Discipline of Acute Care Medicine, University of Adelaide, Adelaide, Australia.,Department of Critical Care Services, Royal Adelaide Hospital, Adelaide, Australia
| | - Annika Reintam Blaser
- Department of Anaesthesiology and Intensive Care, University of Tartu, Tartu, Estonia.,Center of Intensive Care Medicine, Lucerne Cantonal Hospital, Lucerne, Switzerland
| | - Stephen A McClave
- Department of Medicine, University of Louisville, Louisville, Kentucky, USA
| | - Anton Emmanuel
- Department of Neuro-Gastroenterology, University College London, London, UK
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8
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Nguyen TAN, Abdelhamid YA, Phillips LK, Chapple LS, Horowitz M, Jones KL, Deane AM. Nutrient stimulation of mesenteric blood flow - implications for older critically ill patients. World J Crit Care Med 2017; 6:28-36. [PMID: 28224105 PMCID: PMC5295167 DOI: 10.5492/wjccm.v6.i1.28] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 12/16/2016] [Accepted: 01/02/2017] [Indexed: 02/06/2023] Open
Abstract
Nutrient ingestion induces a substantial increase in mesenteric blood flow. In older persons (aged ≥ 65 years), particularly those with chronic medical conditions, the cardiovascular compensatory response may be inadequate to maintain systemic blood pressure during mesenteric blood pooling, leading to postprandial hypotension. In older ambulatory persons, postprandial hypotension is an important pathophysiological condition associated with an increased propensity for syncope, falls, coronary vascular events, stroke and death. In older critically ill patients, the administration of enteral nutrition acutely increases mesenteric blood flow, but whether this pathophysiological response is protective, or precipitates mesenteric ischaemia, is unknown. There are an increasing number of older patients surviving admission to intensive care units, who are likely to be at increased risk of postprandial hypotension, both during, and after, their stay in hospital. In this review, we describe the prevalence, impact and mechanisms of postprandial hypotension in older people and provide an overview of the impact of postprandial hypotension on feeding prescriptions in older critically ill patients. Finally, we provide evidence that postprandial hypotension is likely to be an unrecognised problem in older survivors of critical illness and discuss potential options for management.
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9
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Kar P, Plummer MP, Chapman MJ, Cousins CE, Lange K, Horowitz M, Jones KL, Deane AM. Energy-Dense Formulae May Slow Gastric Emptying in the Critically Ill. JPEN J Parenter Enteral Nutr 2016; 40:1050-6. [PMID: 26038421 DOI: 10.1177/0148607115588333] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 04/11/2015] [Indexed: 02/05/2023]
Abstract
BACKGROUND Enteral feed intolerance occurs frequently in critically ill patients and can be associated with adverse outcomes. "Energy-dense formulae" (ie, >1 kcal/mL) are often prescribed to critically ill patients to reduce administered volume and are presumed to maintain or increase calorie delivery. The aim of this study was to compare gastric emptying of standard and energy-dense formulae in critically ill patients. METHODS In a retrospective comparison of 2 studies, data were analyzed from 2 groups of patients that received a radiolabeled 100-mL "meal" containing either standard calories (1 kcal/mL) or concentrated calories (energy-dense formulae; 2 kcal/mL). Gastric emptying was measured using a scintigraphic technique. Radioisotope data were collected for 4 hours and gastric emptying quantified. Data are presented as mean ± SE or median [interquartile range] as appropriate. RESULTS Forty patients were studied (n = 18, energy-dense formulae; n = 22, standard). Groups were well matched in terms of demographics. However, patients in the energy-dense formula group were studied earlier in their intensive care unit admission (P = .02) and had a greater proportion requiring inotropes (P = .002). A similar amount of calories emptied out of the stomach per unit time (P = .57), but in patients receiving energy-dense formulae, a greater volume of meal was retained in the stomach (P = .045), consistent with slower gastric emptying. CONCLUSIONS In critically ill patients, the administration of the same volume of a concentrated enteral nutrition formula may not result in the delivery of more calories to the small intestine over time because gastric emptying is slowed.
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Affiliation(s)
- Palash Kar
- Discipline of Acute Care Medicine, University of Adelaide, Adelaide, Australia Intensive Care Unit, Royal Adelaide Hospital, Adelaide, Australia
| | - Mark P Plummer
- Discipline of Acute Care Medicine, University of Adelaide, Adelaide, Australia Intensive Care Unit, Royal Adelaide Hospital, Adelaide, Australia
| | - Marianne J Chapman
- Discipline of Acute Care Medicine, University of Adelaide, Adelaide, Australia Intensive Care Unit, Royal Adelaide Hospital, Adelaide, Australia National Health and Medical Research Council, Centre of Research Excellence in Translating Nutritional Science to Good Health, University of Adelaide, Adelaide, Australia
| | | | - Kylie Lange
- National Health and Medical Research Council, Centre of Research Excellence in Translating Nutritional Science to Good Health, University of Adelaide, Adelaide, Australia Discipline of Medicine, University of Adelaide, Adelaide, Australia
| | - Michael Horowitz
- National Health and Medical Research Council, Centre of Research Excellence in Translating Nutritional Science to Good Health, University of Adelaide, Adelaide, Australia Discipline of Medicine, University of Adelaide, Adelaide, Australia
| | - Karen L Jones
- National Health and Medical Research Council, Centre of Research Excellence in Translating Nutritional Science to Good Health, University of Adelaide, Adelaide, Australia Discipline of Medicine, University of Adelaide, Adelaide, Australia
| | - Adam M Deane
- Discipline of Acute Care Medicine, University of Adelaide, Adelaide, Australia Intensive Care Unit, Royal Adelaide Hospital, Adelaide, Australia National Health and Medical Research Council, Centre of Research Excellence in Translating Nutritional Science to Good Health, University of Adelaide, Adelaide, Australia
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10
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Declercq B, Deane AM, Wang M, Chapman MJ, Heyland DK. Enhanced Protein-Energy Provision via the Enteral Route Feeding (PEPuP) protocol in critically ill surgical patients: a multicentre prospective evaluation. Anaesth Intensive Care 2016; 44:93-8. [PMID: 26673594 DOI: 10.1177/0310057x1604400114] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Suboptimal levels of feeding in critically ill patients are associated with poor clinical outcomes. The Enhanced Protein-Energy Provision via the Enteral Route Feeding (PEPuP) protocol was developed to improve nutritional delivery in the critically ill and has been studied in several hospitals. However, the experience with this protocol in surgical patients is limited to date. The objective of this analysis was to describe the experience with this protocol in surgical patients. We analysed observational patient data obtained from the 2013 International Nutrition Survey. We compared nutritional practices and outcomes of patients admitted for surgical and medical reasons to ICUs in sites that implemented the PEPuP protocol. We used surgical ICU patients in non-PEPuP sites as a concurrent control group. In sites that implemented the PEPuP protocol, surgical patients received a smaller proportion of prescribed calories (43% versus 61%, P=0.004) and protein (38% versus 57%, P=0.002) compared to medical patients. When compared to the cohort of surgical patients from control sites, the surgical patients from PEPuP sites received similar amounts of calories and protein. Although surgical PEPuP patients were more likely to receive trophic and volume-based feeds compared to surgical patients in control sites, other aspects of the PEPuP protocol were not adequately implemented. We conclude that nutritional delivery to surgical patients remains inadequate and the PEPuP protocol seems ineffective in improving nutritional intake in this population. Further research to determine methods of optimising PEPuP protocol implementation and adherence in surgery patients is needed.
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Affiliation(s)
- B Declercq
- Royal Adelaide Hospital, North Terrace, Adelaide, South Australia
| | - A M Deane
- Royal Adelaide Hospital and Discipline of Acute Care Medicine, University of Adelaide, Adelaide, South Australia
| | - M Wang
- Clinical Evaluation Research Unit, Kingston General Hospital, Kingston, Ontario, Canada
| | - M J Chapman
- Intensive Care Unit, Royal Adelaide Hospital, and Discipline of Acute Care Medicine, North Terrace, Adelaide, South Australia
| | - D K Heyland
- Clinical Evaluation Research Unit, Kingston General Hospital, Kingston, Ontario, Canada
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11
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Nielsen ST, Janum S, Krogh-Madsen R, Solomon TP, Møller K. The incretin effect in critically ill patients: a case-control study. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2015; 19:402. [PMID: 26567860 PMCID: PMC4645481 DOI: 10.1186/s13054-015-1118-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 10/27/2015] [Indexed: 02/11/2023]
Abstract
Introduction Patients admitted to the intensive care unit often develop hyperglycaemia, but the underlying mechanisms have not been fully described. The incretin effect is reduced in patients with type 2 diabetes. Type 2 diabetes and critical illness have phenotypical similarities, such as hyperglycaemia, insulin resistance and systemic inflammation. Previous studies have shown beneficial effects of exogenous glucagon-like peptide (GLP)-1 on glycaemia in critically ill patients, a phenomenon also seen in patients with type 2 diabetes. In this study, we hypothesised that the incretin effect, which is mediated by the incretin hormones GLP-1 and glucose-dependent insulinotropic peptide (GIP), is impaired in critically ill patients. Methods The incretin effect (i.e., the relative difference between the insulin response to oral and intravenous glucose administration) was investigated in a cross-sectional case–control study. Eight critically ill patients without diabetes admitted to a mixed intensive care unit and eight healthy control subjects without diabetes, matched at group level by age, sex and body mass index, were included in the study. All subjects underwent an oral glucose tolerance test (OGTT) followed by an intravenous glucose infusion (IVGI) on the next day to mimic the blood glucose profile from the OGTT. Blood glucose, serum insulin, serum C-peptide and plasma levels of GLP-1, GIP, glucagon and proinflammatory cytokines were measured intermittently. The incretin effect was calculated as the increase in insulin secretion during oral versus intravenous glucose administration in six patients. The groups were compared using either Student’s t test or a mixed model of repeated measurements. Results Blood glucose levels were matched between the OGTT and the IVGI in both groups. Compared with control subjects, proinflammatory cytokines, tumour necrosis factor α and interleukin 6, were higher in patients than in control subjects. The endogenous response of GIP and glucagon, but not GLP-1, to the OGTT was greater in patients. The insulin response to the OGTT did not differ between groups, whereas the insulin response to the IVGI was higher in patients. Consequently, the calculated incretin effect was lower in patients (23 vs. 57 %, p = 0.003). Conclusions In critically ill patients, the incretin effect was reduced. This resembles previous findings in patients with type 2 diabetes. Trial registration ClinicalTrials.gov identifier: NCT01347801. Registered on 2 May 2011. Electronic supplementary material The online version of this article (doi:10.1186/s13054-015-1118-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Signe Tellerup Nielsen
- Centre of Inflammation and Metabolism and the Centre for Physical Activity Research, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.
| | - Susanne Janum
- Centre of Inflammation and Metabolism and the Centre for Physical Activity Research, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark. .,Department of Anaesthesiology, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark.
| | - Rikke Krogh-Madsen
- Centre of Inflammation and Metabolism and the Centre for Physical Activity Research, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.
| | - Thomas P Solomon
- School of Sport, Exercise, and Rehabilitation Sciences, Centre for Endocrinology, Diabetes, and Metabolism, University of Birmingham, Birmingham, UK.
| | - Kirsten Møller
- Centre of Inflammation and Metabolism and the Centre for Physical Activity Research, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark. .,Neurointensive Care Unit, Department of Neuroanaesthesiology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.
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12
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Abstract
OBJECTIVE We aimed to review gastric dysmotility in critically ill children: 1) its pathophysiology, with a focus on critical care diseases and therapies that affect gastric motility, 2) diagnostic methodologies, and 3) current and future potential therapies. DATA SOURCES Eligible studies were identified from PubMed and MEDLINE. STUDY SELECTION Literature search included the following key terms: "gastric emptying," "gastric motility/dysmotility," "gastrointestinal motility/dysmotility," "nutrition intolerance," and "gastric residual volume." DATA EXTRACTION Studies since 1995 were extracted and reviewed for inclusion by the authors related to the physiology, pathophysiology, diagnostic methodologies, and available therapies for gastric emptying. DATA SYNTHESIS Delayed gastric emptying, a common presentation of gastric dysmotility, is present in up to 50% of critically ill children. It is associated with the potential for aspiration, ventilator-associated pneumonia, and inadequate delivery of enteral nutrition and may affect the efficacy of enteral medications, all of which may be result in poor patient outcomes. Gastric motility is affected by critical illness and its associated therapies. Currently available diagnostic tools to identify gastric emptying at the bedside have not been systematically studied and applied in this cohort. Gastric residual volume measurement, used as an indirect marker of delayed gastric emptying in PICUs around the world, may be inaccurate. CONCLUSIONS Gastric dysmotility is common in critically ill children and impacts patient safety and outcomes. However, it is poorly understood, inadequately defined, and current therapies are limited and based on scant evidence. Understanding gastric motility and developing accurate bedside measures and novel therapies for gastric emptying are highly desirable and need to be further investigated.
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Chapman MJ, Deane AM. Gastrointestinal dysfunction relating to the provision of nutrition in the critically ill. Curr Opin Clin Nutr Metab Care 2015; 18:207-12. [PMID: 25603226 DOI: 10.1097/mco.0000000000000149] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
PURPOSE OF REVIEW During critical illness, enteral nutrition remains central to clinical care and an understanding of gut dysfunction is therefore important. Contemporary data have contributed to our knowledge in this area and this review will concentrate on recently published studies. RECENT FINDINGS It is difficult to precisely measure gastric emptying and nutrient absorption as part of routine clinical care. However, techniques for the measurement of these parameters for research purposes have been refined, studied and validated. These methodologies allow the evaluation of novel treatments that modulate gastric emptying. Quantification and an understanding of the mechanisms of nutrient malabsorption may facilitate the development of therapeutic agents to improve absorption and/or formulae, which are more readily absorbed, thereby improving nutritional and clinical outcomes. SUMMARY Improved understanding of gut pathophysiology in critical illness provides opportunities for the development and testing of novel and targeted treatment strategies, with the objective to improve clinical outcomes in this group.
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Affiliation(s)
- Marianne J Chapman
- aDepartment of Critical Care Services, Royal Adelaide Hospital, North Terrace bNHMRC Centre of Research Excellence (CRE) in the Translation of Nutritional Science into Good Health cDiscipline of Acute Care Medicine, University of Adelaide, Adelaide, South Australia, Australia
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