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Arunachala Murthy T, Chapman M, Jones KL, Horowitz M, Marathe CS. Inter-relationships between gastric emptying and glycaemia: Implications for clinical practice. World J Diabetes 2023; 14:447-459. [PMID: 37273253 PMCID: PMC10236995 DOI: 10.4239/wjd.v14.i5.447] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 12/09/2022] [Accepted: 04/07/2023] [Indexed: 05/15/2023] Open
Abstract
Gastric emptying (GE) exhibits a wide inter-individual variation and is a major determinant of postprandial glycaemia in health and diabetes; the rise in blood glucose following oral carbohydrate is greater when GE is relatively more rapid and more sustained when glucose tolerance is impaired. Conversely, GE is influenced by the acute glycaemic environment acute hyperglycaemia slows, while acute hypoglycaemia accelerates it. Delayed GE (gastroparesis) occurs frequently in diabetes and critical illness. In diabetes, this poses challenges for management, particularly in hospitalised individuals and/or those using insulin. In critical illness it compromises the delivery of nutrition and increases the risk of regurgitation and aspiration with consequent lung dysfunction and ventilator dependence. Substantial advances in knowledge relating to GE, which is now recognised as a major determinant of the magnitude of the rise in blood glucose after a meal in both health and diabetes and, the impact of acute glycaemic environment on the rate of GE have been made and the use of gut-based therapies such as glucagon-like peptide-1 receptor agonists, which may profoundly impact GE, in the management of type 2 diabetes, has become commonplace. This necessitates an increased understanding of the complex inter-relationships of GE with glycaemia, its implications in hospitalised patients and the relevance of dysglycaemia and its management, particularly in critical illness. Current approaches to management of gastroparesis to achieve more personalised diabetes care, relevant to clinical practice, is detailed. Further studies focusing on the interactions of medications affecting GE and the glycaemic environment in hospitalised patients, are required.
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Affiliation(s)
- Tejaswini Arunachala Murthy
- Adelaide Medical School, University of Adelaide, Adelaide 5000, SA, Australia
- Intensive Care Unit, Royal Adelaide Hospital, Adelaide 5000, SA, Australia
| | - Marianne Chapman
- Adelaide Medical School, University of Adelaide, Adelaide 5000, SA, Australia
- Intensive Care Unit, Royal Adelaide Hospital, Adelaide 5000, SA, Australia
- NHMRC Centre of Clinical Research Excellence in Nutritional Physiology, Interventions and Outcomes, University of Adelaide, Adelaide 5000, SA, Australia
| | - Karen L Jones
- Adelaide Medical School, University of Adelaide, Adelaide 5000, SA, Australia
- NHMRC Centre of Clinical Research Excellence in Nutritional Physiology, Interventions and Outcomes, University of Adelaide, Adelaide 5000, SA, Australia
| | - Michael Horowitz
- Adelaide Medical School, University of Adelaide, Adelaide 5000, SA, Australia
- NHMRC Centre of Clinical Research Excellence in Nutritional Physiology, Interventions and Outcomes, University of Adelaide, Adelaide 5000, SA, Australia
- Endocrine and Metabolic Unit, Royal Adelaide Hospital, Adelaide 5000, SA, Australia
| | - Chinmay S Marathe
- Adelaide Medical School, University of Adelaide, Adelaide 5000, SA, Australia
- NHMRC Centre of Clinical Research Excellence in Nutritional Physiology, Interventions and Outcomes, University of Adelaide, Adelaide 5000, SA, Australia
- Endocrine and Metabolic Unit, Royal Adelaide Hospital, Adelaide 5000, SA, Australia
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Arunachala Murthy T, Chapple LAS, Lange K, Marathe CS, Horowitz M, Peake SL, Chapman MJ. Gastrointestinal dysfunction during enteral nutrition delivery in intensive care unit (ICU) patients: Risk factors, natural history, and clinical implications. A post-hoc analysis of The Augmented versus Routine approach to Giving Energy Trial (TARGET). Am J Clin Nutr 2022; 116:589-598. [PMID: 35472097 PMCID: PMC9348974 DOI: 10.1093/ajcn/nqac113] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Accepted: 04/24/2022] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND Slow gastric emptying occurs frequently during critical illness and is roughly quantified at bedside by large gastric residual volumes (GRVs). A previously published trial (The Augmented versus Routine approach to Giving Energy Trial; TARGET) reported larger GRVs with energy-dense (1.5 kcal/mL) compared with standard (1.0 kcal/mL) enteral nutrition (EN), warranting further exploration. OBJECTIVE To assess the incidence, risk factors, duration, and timing of large GRVs (≥250 mL) and its relation to clinical outcomes in mechanically ventilated adults. METHODS A post-hoc analysis of TARGET data in patients with ≥1 GRV recorded. Data are n (%) or median [IQR]. RESULTS Of 3876 included patients, 1777 (46%) had ≥1 GRV ≥250 mL, which was more common in males (50 compared with 39%; P < 0.001) and in patients receiving energy-dense compared with standard EN (52 compared with 40%; RR = 1.27 (95% CI: 1.19, 1.36); P < 0.001) in whom it also lasted longer (1 [0-2] compared with 0 [0-1] d; P < 0.001), with no difference in time of onset after EN initiation (day 1 [0-2] compared with 1 [0-2]; P = 0.970). Patients with GRV ≥250 mL were more likely to have the following: vasopressor administration (88 compared with 76%; RR = 1.15 [1.12, 1.19]; P < 0.001), positive blood cultures (16 compared with 8%; RR = 1.92 [1.60, 2.31]; P < 0.001), intravenous antimicrobials (88 compared with 81%; RR = 1.09 [1.06, 1.12]; P < 0.001), and prolonged intensive care unit (ICU) stay (ICU-free days to day 28; 12.9 [0.0-21.0] compared with 20.0 [3.9-24.0]; P < 0.001), hospital stay (hospital-free days to day 28: 0.0 [0.0-12.0] compared with 7.0 [0.0-17.6] d; P < 0.001), ventilatory support (ventilator-free days to day 28: 16.0 [0.0-23.0] compared with 22.0 [8.0-25.0]; P < 0.001), and a higher 90-d mortality (29 compared with 23%; adjusted: RR = 1.17 [1.05, 1.30]; P = 0.003). CONCLUSION Large GRVs were more common in males and those receiving energy-dense formulae, occurred early and were short-lived, and were associated with a number of negative clinical sequelae, including increased mortality, even when adjusted for illness severity. This trial was registered at clinicaltrials.gov as NCT02306746.
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Affiliation(s)
| | - Lee-anne S Chapple
- Adelaide Medicine School, University of Adelaide, Adelaide, Australia,Intensive Care Unit, Royal Adelaide Hospital, Adelaide, Australia,Centre for Research Excellence in Nutritional Physiology, Adelaide, Australia
| | - Kylie Lange
- Adelaide Medicine School, University of Adelaide, Adelaide, Australia,Centre for Research Excellence in Nutritional Physiology, Adelaide, Australia
| | - Chinmay S Marathe
- Adelaide Medicine School, University of Adelaide, Adelaide, Australia,Centre for Research Excellence in Nutritional Physiology, Adelaide, Australia,The Endocrine and Metabolic Unit, Royal Adelaide Hospital, Adelaide, Australia
| | - Michael Horowitz
- Adelaide Medicine School, University of Adelaide, Adelaide, Australia,Centre for Research Excellence in Nutritional Physiology, Adelaide, Australia,The Endocrine and Metabolic Unit, Royal Adelaide Hospital, Adelaide, Australia
| | - Sandra L Peake
- Adelaide Medicine School, University of Adelaide, Adelaide, Australia,The Department of Intensive Care Medicine, The Queen Elizabeth Hospital, Adelaide, Australia,School of Epidemiology and Preventive Medicine, Monash University, Victoria, Australia
| | - Marianne J Chapman
- Adelaide Medicine School, University of Adelaide, Adelaide, Australia,Intensive Care Unit, Royal Adelaide Hospital, Adelaide, Australia,Centre for Research Excellence in Nutritional Physiology, Adelaide, Australia,School of Epidemiology and Preventive Medicine, Monash University, Victoria, Australia
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3
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Kar P, Plummer MP, Ali Abdelhamid Y, Giersch EJ, Summers MJ, Weinel LM, Finnis ME, Phillips LK, Jones KL, Horowitz M, Deane AM. Incident Diabetes in Survivors of Critical Illness and Mechanisms Underlying Persistent Glucose Intolerance: A Prospective Cohort Study. Crit Care Med 2019; 47:e103-e111. [PMID: 30398977 DOI: 10.1097/ccm.0000000000003524] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVES Stress hyperglycemia occurs in critically ill patients and may be a risk factor for subsequent diabetes. The aims of this study were to determine incident diabetes and prevalent prediabetes in survivors of critical illness experiencing stress hyperglycemia and to explore underlying mechanisms. DESIGN This was a prospective, single center, cohort study. At admission to ICU, hemoglobin A1c was measured in eligible patients. Participants returned at 3 and 12 months after ICU admission and underwent hemoglobin A1c testing and an oral glucose tolerance test. Blood was also collected for hormone concentrations, whereas gastric emptying was measured via an isotope breath test. β-cell function was modeled using standard techniques. SETTING Tertiary-referral, mixed medical-surgical ICU. PATIENTS Consecutively admitted patients who developed stress hyperglycemia and survived to hospital discharge were eligible. MEASUREMENTS AND MAIN RESULTS Consent was obtained from 40 patients (mean age, 58 yr [SD, 10], hemoglobin A1c 36.8 mmol/mol [4.9 mmol/mol]) with 35 attending the 3-month and 26 the 12-month visits. At 3 months, 13 (37%) had diabetes and 15 (43%) had prediabetes. At 12 months, seven (27%) participants had diabetes, whereas 11 (42%) had prediabetes. Mean hemoglobin A1c increased from baseline during the study: +0.7 mmol/mol (-1.2 to 2.5 mmol/mol) at 3 months and +3.3 mmol/mol (0.98-5.59 mmol/mol) at 12 months (p = 0.02). Gastric emptying was not significantly different across groups at either 3 or 12 months. CONCLUSIONS Diabetes and prediabetes occur frequently in survivors of ICU experiencing stress hyperglycemia. Based on the occurrence rate observed in this cohort, structured screening and intervention programs appear warranted.
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Affiliation(s)
- Palash Kar
- Discipline of Acute Care Medicine, University of Adelaide, Adelaide, SA, Australia
- Intensive Care Unit, Royal Adelaide Hospital, Adelaide, SA, Australia
| | - Mark P Plummer
- Discipline of Acute Care Medicine, University of Adelaide, Adelaide, SA, Australia
- Intensive Care Unit, Royal Melbourne Hospital, University of Melbourne, Parkville, VIC, Australia
| | - Yasmine Ali Abdelhamid
- Discipline of Acute Care Medicine, University of Adelaide, Adelaide, SA, Australia
- Intensive Care Unit, Royal Melbourne Hospital, University of Melbourne, Parkville, VIC, Australia
| | - Emma J Giersch
- Intensive Care Unit, Royal Adelaide Hospital, Adelaide, SA, Australia
| | - Matthew J Summers
- Intensive Care Unit, Royal Adelaide Hospital, Adelaide, SA, Australia
| | - Luke M Weinel
- Intensive Care Unit, Royal Adelaide Hospital, Adelaide, SA, Australia
| | - Mark E Finnis
- Discipline of Acute Care Medicine, University of Adelaide, Adelaide, SA, Australia
- Intensive Care Unit, Royal Adelaide Hospital, Adelaide, SA, Australia
| | | | - Karen L Jones
- National Health and Medical Research Council Centre of Research Excellence (CRE) in the Translation of Nutritional Science into Good Health, University of Adelaide, Adelaide, SA, Australia
- Discipline of Medicine, University of Adelaide, Adelaide, SA, Australia
| | | | - Adam M Deane
- Discipline of Acute Care Medicine, University of Adelaide, Adelaide, SA, Australia
- Intensive Care Unit, Royal Melbourne Hospital, University of Melbourne, Parkville, VIC, Australia
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Butler RN, Kosek M, Krebs NF, Loechl CU, Loy A, Owino VO, Zimmermann MB, Morrison DJ. Stable Isotope Techniques for the Assessment of Host and Microbiota Response During Gastrointestinal Dysfunction. J Pediatr Gastroenterol Nutr 2017; 64:8-14. [PMID: 27632432 PMCID: PMC5214897 DOI: 10.1097/mpg.0000000000001373] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The International Atomic Energy Agency convened a technical meeting on environmental enteric dysfunction (EED) in Vienna (October 28-30, 2015; https://nucleus.iaea.org/HHW/Nutrition/EED_Technical_Meeting/index.html) to bring together international experts in the fields of EED, nutrition, and stable isotope technologies. Advances in stable isotope-labeling techniques open up new possibilities to improve our understanding of gastrointestinal dysfunction and the role of the microbiota in host health. In the context of EED, little is known about the role gut dysfunction may play in macro- and micronutrient bioavailability and requirements and what the consequences may be for nutritional status and linear growth. Stable isotope labeling techniques have been used to assess intestinal mucosal injury and barrier function, carbohydrate digestion and fermentation, protein-derived amino acid bioavailability and requirements, micronutrient bioavailability and to track microbe-microbe and microbe-host interactions at the single cell level. The noninvasive nature of stable isotope technologies potentially allow for low-hazard, field-deployable tests of gut dysfunction that are applicable across all age groups. The purpose of this review is to assess the state-of-the-art use of stable isotope technologies and to provide a perspective on where these technologies can be exploited to further our understanding of gut dysfunction in EED.
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Affiliation(s)
- Ross N Butler
- *School of Pharmacy and Medical Sciences, Division of Health Sciences, University of South Australia, Adelaide, Australia †Bloomberg School of Public Health, John Hopkins University, Baltimore, MD ‡Department of Pediatrics, School of Medicine, University of Colorado, Aurora §Nutrition and Health-Related Environmental Studies Section, Division of Human Health, International Atomic Energy Agency ||Division of Microbial Ecology, Department of Microbial and Ecosystem Science, Research Network Chemistry meets Microbiology, University of Vienna, Vienna, Austria ¶Institute of Food, Nutrition and Health, Department of Health Sciences and Technology, ETH Zürich, Zurich, Switzerland #Scottish Universities Environmental Research Centre, University of Glasgow, East Kilbride, Scotland, UK
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Chapman MJ, Nguyen NQ, Deane AM. Gastrointestinal dysmotility: clinical consequences and management of the critically ill patient. Gastroenterol Clin North Am 2011; 40:725-39. [PMID: 22100114 DOI: 10.1016/j.gtc.2011.09.003] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
Gastrointestinal dysmotility is a common feature of critical illness, with a number of significant implications that include malnutrition secondary to reduced feed tolerance and absorption, reflux and aspiration resulting in reduced lung function and ventilator-associated pneumonia, bacterial overgrowth and possible translocation causing nosocomial sepsis. Prokinetic agent administration can improve gastric emptying and caloric delivery, but its effect on nutrient absorption and clinical outcomes is, as yet, unclear. Postpyloric delivery of nutrition has not yet been demonstrated to increase caloric intake or improve clinical outcomes.
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Affiliation(s)
- Marianne J Chapman
- Department of Critical Care Services, Royal Adelaide Hospital, North Terrace, Adelaide, South Australia.
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Nguyen N, Ching K, Fraser R, Chapman M, Holloway R. The relationship between blood glucose control and intolerance to enteral feeding during critical illness. Intensive Care Med 2007; 33:2085-92. [PMID: 17909745 DOI: 10.1007/s00134-007-0869-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2007] [Accepted: 09/01/2007] [Indexed: 12/14/2022]
Abstract
OBJECTIVE To assess the relationship between blood glucose concentrations (BSL) and intolerance to gastric feeding in critically ill patients. DESIGN Prospective, case-controlled study. PATIENTS AND PARTICIPANTS Two-hourly BSL and insulin requirements over the first 10 days after admission were assessed in 95 consecutive feed-intolerant (NG aspirate > 250 ml during feed) critically ill patients and 50 age-matched, feed-tolerant patients who received feeds for at least 3 days. Patients with diabetes mellitus were excluded. A standard insulin protocol was used to maintain BSL at 5.0-7.9 mmol. MEASUREMENTS AND RESULTS The peak BSLs were significantly higher before and during enteral feeding in feed-intolerant patients. The mean and trough BSLs were, however, similar between the two groups on admission, 24 h prior to feeding and for the first 4 days of feeding. The variations in BSLs over 24 h before and during enteral feeding were significantly greater in feed-intolerant patients. A BSL greater than 10 mmol/l was more prevalent in patients with feed intolerance during enteral feeding. The time taken to develop feed intolerance was inversely related to the admission BSL (r= -0.40). The amount of insulin administered before and during enteral feeding was similar between the two groups. CONCLUSIONS Feed intolerance in critically ill patients is associated with a greater degree of glycaemic variation, with a greater number of patients with transient hyperglycaemia. These data suggest more intensive insulin therapy may be required to minimize feed intolerance, an issue that warrants further study.
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Affiliation(s)
- Nam Nguyen
- Department of Gastroenterology, Hepatology and General Medicine, Royal Adelaide Hospital, North Terrace, Adelaide, 5000, Australia.
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Deane A, Chapman MJ, Fraser RJ, Bryant LK, Burgstad C, Nguyen NQ. Mechanisms underlying feed intolerance in the critically ill: Implications for treatment. World J Gastroenterol 2007; 13:3909-17. [PMID: 17663503 PMCID: PMC4171161 DOI: 10.3748/wjg.v13.i29.3909] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Malnutrition is associated with poor outcomes in critically ill patients. Although nutritional support is yet to be proven to improve mortality in non-malnourished critically ill patients, early enteral feeding is considered best practice. However, enteral feeding is often limited by delayed gastric emptying. The best method to clinically identify delayed gastric emptying and feed intolerance is unclear. Gastric residual volume (GRV) measured at the bedside is widely used as a surrogate marker for gastric emptying, but the value of GRV measurement has recently been disputed. While the mechanisms underlying delayed gastric emptying require further investigation, recent research has given a better appreciation of the pathophysiology. A number of pharmacological strategies are available to improve the success of feeding. Recent data suggest a combination of intravenous metoclopramide and erythromycin to be the most successful treatment, but novel drug therapies should be explored. Simpler methods to access the duodenum and more distal small bowel for feed delivery are also under investigation. This review summarises current understanding of the factors responsible for, and mechanisms underlying feed intolerance in critical illness, together with the evidence for current practices. Areas requiring further research are also highlighted.
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Lam SW, Nguyen NQ, Ching K, Chapman M, Fraser RJ, Holloway RH. Gastric feed intolerance is not increased in critically ill patients with type II diabetes mellitus. Intensive Care Med 2007; 33:1740-5. [PMID: 17554523 DOI: 10.1007/s00134-007-0712-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2006] [Accepted: 05/02/2007] [Indexed: 12/13/2022]
Abstract
OBJECTIVE To examine the occurrence of feed intolerance in critically ill patients with previously diagnosed type II diabetes mellitus (DM) who received prolonged gastric feeding. DESIGN AND SETTING Retrospective study in a level 3 mixed ICU. PATIENTS All mechanically ventilated, enterally fed patients (n = 649), with (n = 118) and without type II DM (n = 531) admitted between January 2003 and July 2005. INTERVENTIONS Patients with at least 72 h of gastric feeding were identified by review of case notes and ICU charts. The proportion that developed feed intolerance was determined. All patient received insulin therapy. RESULTS The proportion of patients requiring gastric feeding for at least 72 h was similar between patients with and without DM (42%, 50/118, vs. 42%, 222/531). Data from patients with DM were also compared with a group of 50 patients matched for age, sex and APACHE II score, selected from the total non-diabetic group. The occurrence of feed intolerance (DM 52% vs. matched non-DM 50% vs. unselected non-diabetic 58%) and the time taken to develop feed intolerance (DM 62.6 +/- 43.8 h vs. matched non-DM 45.3 +/- 54.6 vs. unselected non-diabetic 50.6 +/- 59.5) were similar amongst the three groups. Feed intolerance was associated with a greater use of morphine/midazolam and vasopressor support, a lower feeding rate and a longer ICU length of stay. CONCLUSIONS In critically ill patients who require prolonged enteral nutrition, a prior history of DM type II does not appear to be a further risk factor for feed intolerance.
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Affiliation(s)
- S W Lam
- Department of Gastroenterology, Royal Adelaide Hospital, North Terrace, 5000, Adelaide, SA, Australia.
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Nguyen NQ, Ng MP, Chapman M, Fraser RJ, Holloway RH. The impact of admission diagnosis on gastric emptying in critically ill patients. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2007; 11:R16. [PMID: 17288616 PMCID: PMC2151889 DOI: 10.1186/cc5685] [Citation(s) in RCA: 110] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2006] [Revised: 01/15/2007] [Accepted: 02/08/2007] [Indexed: 12/21/2022]
Abstract
Introduction Disturbed gastric emptying (GE) occurs commonly in critically ill patients. Admission diagnoses are believed to influence the incidence of delayed GE and subsequent feed intolerance. Although patients with burns and head injury are considered to be at greater risk, the true incidence has not been determined by examination of patient groups of sufficient number. This study aimed to evaluate the impact of admission diagnosis on GE in critically ill patients. Methods A retrospective review of patient demographics, diagnosis, intensive care unit (ICU) admission details, GE, and enteral feeding was performed on an unselected cohort of 132 mechanically ventilated patients (94 males, 38 females; age 54 ± 1.2 years; admission Acute Physiology and Chronic Health Evaluation II [APACHE II] score of 22 ± 1) who had undergone GE assessment by 13C-octanoic acid breath test. Delayed GE was defined as GE coefficient (GEC) of less than 3.20 and/or gastric half-emptying time (t50) of more than 140 minutes. Results Overall, 60% of the patients had delayed GE and a mean GEC of 2.9 ± 0.1 and t50 of 163 ± 7 minutes. On univariate analysis, GE correlated significantly with older age, higher admission APACHE II scores, longer length of stay in ICU prior to GE measurement, higher respiratory rate, higher FiO2 (fraction of inspired oxygen), and higher serum creatinine. After these factors were controlled for, there was a modest relationship between admission diagnosis and GE (r = 0.48; P = 0.02). The highest occurrence of delayed GE was observed in patients with head injuries, burns, multi-system trauma, and sepsis. Delayed GE was least common in patients with myocardial injury and non-gastrointestinal post-operative respiratory failure. Patients with delayed GE received fewer feeds and stayed longer in ICU and hospital compared to those with normal GE. Conclusion Admission diagnosis has a modest impact on GE in critically ill patients, even after controlling for factors such as age, illness severity, and medication, which are known to influence this function.
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Affiliation(s)
- Nam Q Nguyen
- Department of Gastroenterology, Royal Adelaide Hospital, North Terrace, Adelaide, 5000, Australia
- Department of Medicine, University of Adelaide, Frome Road, Adelaide, 5000, Australia
| | - Mei P Ng
- Department of Gastroenterology, Royal Adelaide Hospital, North Terrace, Adelaide, 5000, Australia
| | - Marianne Chapman
- Department of Intensive Care, Royal Adelaide Hospital, North Terrace, Adelaide, 5000, Australia
| | - Robert J Fraser
- Department of Medicine, University of Adelaide, Frome Road, Adelaide, 5000, Australia
| | - Richard H Holloway
- Department of Gastroenterology, Royal Adelaide Hospital, North Terrace, Adelaide, 5000, Australia
- Department of Medicine, University of Adelaide, Frome Road, Adelaide, 5000, Australia
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Chapman MJ, Nguyen NQ, Fraser RJL. Gastrointestinal motility and prokinetics in the critically ill. Curr Opin Crit Care 2007; 13:187-94. [PMID: 17327741 DOI: 10.1097/mcc.0b013e3280523a88] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
PURPOSE OF REVIEW Enteral nutrition is frequently unsuccessful in the critically ill due to gastrointestinal dysfunction. Current treatment strategies are often disappointing. In this article upper gastrointestinal function in health together with abnormalities seen during critical illness are reviewed, and potential therapeutic options summarized. RECENT FINDINGS Reflux oesophagitis occurs frequently due to reduced or absent lower oesophageal sphincter tone. In the stomach a number of motor patterns contribute to slow gastric emptying. The fundus has reduced compliance, there are less frequent contractions in both the proximal and distal stomach, isolated pyloric activity is increased and the organization of duodenal motor activity is abnormal. In response to nutrients, enterogastric feedback is enhanced, fundic relaxation and subsequent recovery is delayed, antral motility is further reduced and localized pyloric contractions stimulated. Elevated concentrations of hormones such as cholecystokinin and peptide YY are potential mediators for these phenomena. Rapid tachyphylaxis occurs with the commonly used prokinetics, metoclopramide and erythromycin, and novel agents are under investigation. Independent of gastric emptying, nutrient absorption is reduced. SUMMARY There has been considerable progress in understanding the pathogenesis of mechanisms causing feed intolerance in critical illness, but this is yet to be translated into therapeutic benefit.
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Andrews P, Azoulay E, Antonelli M, Brochard L, Brun-Buisson C, De Backer D, Dobb G, Fagon JY, Gerlach H, Groeneveld J, Macrae D, Mancebo J, Metnitz P, Nava S, Pugin J, Pinsky M, Radermacher P, Richard C. Year in Review in Intensive Care Medicine, 2006. III. Circulation, ethics, cancer, outcome, education, nutrition, and pediatric and neonatal critical care. Intensive Care Med 2007; 33:414-22. [PMID: 17325834 DOI: 10.1007/s00134-007-0553-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2007] [Accepted: 01/22/2007] [Indexed: 01/08/2023]
Affiliation(s)
- Peter Andrews
- Intensive Care Medicine Unit, Western General Hospital, Edinburgh, UK
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12
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Nguyen NQ, Fraser RJ, Bryant LK, Chapman M, Holloway RH. Proximal gastric motility in critically ill patients with type 2 diabetes mellitus. World J Gastroenterol 2007; 13:270-5. [PMID: 17226907 PMCID: PMC4065956 DOI: 10.3748/wjg.v13.i2.270] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the proximal gastric motor response to duodenal nutrients in critically ill patients with long-standing type 2 diabetes mellitus.
METHODS: Proximal gastric motility was assessed (using a barostat) in 10 critically ill patients with type 2 diabetes mellitus (59 ± 3 years) during two 60-min duodenal infusions of Ensure® (1 and 2 kcal/min), in random order, separated by 2 h fasting. Data were compared with 15 non-diabetic critically ill patients (48 ± 5 years) and 10 healthy volunteers (28 ± 3 years).
RESULTS: Baseline proximal gastric volumes were similar between the three groups. In diabetic patients, proximal gastric relaxation during 1 kcal/min nutrient infusion was similar to non-diabetic patients and healthy controls. In contrast, relaxation during 2 kcal/min infusion was initially reduced in diabetic patients (p < 0.05) but increased to a level similar to healthy humans, unlike non-diabetic patients where relaxation was impaired throughout the infusion. Duodenal nutrient stimulation reduced the fundic wave frequency in a dose-dependent fashion in both the critically ill diabetic patients and healthy subjects, but not in critically ill patients without diabetes. Fundic wave frequency in diabetic patients and healthy subjects was greater than in non-diabetic patients.
CONCLUSION: In patients with diabetes mellitus, proximal gastric motility is less disturbed than non-diabetic patients during critical illness, suggesting that these patients may not be at greater risk of delayed gastric emptying.
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Affiliation(s)
- Nam Q Nguyen
- Department of Gastroenterology, Royal Adelaide Hospital, North Terrace, Adelaide, SA 5000, Australia.
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