Diarrhea: Applying Research to Bedside Practice

The independent risk factors of early diarrhoea in enteral nutrition for ICU patients

Objective

To investigate the prevalence of and factors associated with diarrhoea in the early stage of enteral nutrition in critically ill patients in intensive care units (ICUs).

Methods

This prospective, multicentre, observational study enrolled consecutive patients who were newly admitted to ICUs and received enteral nutrition treatment. Events were observed continuously for 7 days or until patients were transferred out of the ICU after enteral nutrition. Demographic and clinical data, enteral nutrition data, diarrhoea-related data and outcomes were recorded. A multivariate logistic regression analysis was used to analyse the risk factors for diarrhoea.

Results

The study included 533 patients, of whom 164 (30.8%) developed diarrhoea. Diarrhoea was most commonly observed on the first to third days after starting enteral nutrition treatment. The median (interquartile range) duration of diarrhoea was 2 (1–3) days. The administration of gastrointestinal prokinetic agents, the increase in acute physiological and chronic health scores and the pyloric posterior feeding method were independent risk factors for diarrhoea.

Conclusion

The increased severity of illness, the administration of gastrointestinal prokinetic agents and the pyloric posterior feeding method were independent risk factors for diarrhoea in critically ill ICU patients undergoing enteral nutrition treatment.

Gastrointestinal function in intensive care patients: terminology, definitions and management. Recommendations of the ESICM Working Group on Abdominal Problems

PURPOSE

Acute gastrointestinal (GI) dysfunction and failure have been increasingly recognized in critically ill patients. The variety of definitions proposed in the past has led to confusion and difficulty in comparing one study to another. An international working group convened to standardize the definitions for acute GI failure and GI symptoms and to review the therapeutic options.

METHODS

The Working Group on Abdominal Problems (WGAP) of the European Society of Intensive Care Medicine (ESICM) developed the definitions for GI dysfunction in intensive care patients on the basis of the available evidence and current understanding of the pathophysiology.

RESULTS

Definitions for acute gastrointestinal injury (AGI) with its four grades of severity, as well as for feeding intolerance syndrome and GI symptoms (e.g. vomiting, diarrhoea, paralysis, high gastric residual volumes) are proposed. AGI is a malfunctioning of the GI tract in intensive care patients due to their acute illness. AGI grade I = increased risk of developing GI dysfunction or failure (a self-limiting condition); AGI grade II = GI dysfunction (a condition that requires interventions); AGI grade III = GI failure (GI function cannot be restored with interventions); AGI grade IV = dramatically manifesting GI failure (a condition that is immediately life-threatening). Current evidence and expert opinions regarding treatment of acute GI dysfunction are provided.

CONCLUSIONS

State-of-the-art definitions for GI dysfunction with gradation as well as management recommendations are proposed on the basis of current medical evidence and expert opinion. The WGAP recommends using these definitions for clinical and research purposes.

Management of nausea, vomiting, and diarrhea during critical illness

Symptoms are subjective patient experiences that may negatively impact the patient's hospitalization, treatment plan, and quality of life. Critically ill patients frequently experience nausea, vomiting, and diarrhea related to underlying disease, procedures, and medical interventions (eg, medication, enteral feeding, surgery). Optimally, the nurse performs a subjective assessment that explores the patient's perception and impact of these symptoms to develop a comprehensive plan of care. Unfortunately, little evidence is available to guide assessment of nausea, vomiting, and diarrhea in critically ill nonverbal patients. Understanding the disease processes, medical treatments, and pathophysiology of these symptoms will assist the critical care nurse in the anticipation of symptoms and development of a proactive plan to alleviate the symptom-associated discomfort.

Vomiting, diarrhea, constipation, and gastroenteritis

Diseases that cause vomiting, diarrhea, constipation, and gastroenteritis are major problems for populations worldwide. Patients, particularly infants, elderly, and immunocompromised individuals, may present at any point in a wide spectrum of disease states, underscoring the need for the clinician to treat these ailments aggressively. Several promising new treatment modalities, from oral rehydration solutions to antiemetic therapies, have been introduced over the past decade. Future directions include the use of probiotic agents and better tolerated rehydration solutions. Gastrointestinal disease will continue to be a focus worldwide in the search for better ways to cure illnesses associated with vomiting and diarrhea.

Diarrhoea risk factors in enterally tube fed critically ill patients: a retrospective audit

OBJECTIVE

Diarrhoea in the enterally tube fed (ETF) intensive care unit (ICU) patient is a multi-factorial problem. Diarrhoeal aetiologies in this patient cohort remain debatable; however, the consequences of diarrhoea have been well established and include electrolyte imbalance, dehydration, bacterial translocation, peri anal wound contamination and sleep deprivation. This study examined the incidence of diarrhoea and explored factors contributing to the development of diarrhoea in the ETF, critically ill, adult patient.

METHOD

After institutional ethical review and approval, a single centre medical chart audit was undertaken to examine the incidence of diarrhoea in ETF, critically ill patients. Retrospective, non-probability sequential sampling was used of all emergency admission adult ICU patients who met the inclusion/exclusion criteria.

RESULTS

Fifty patients were audited. Faecal frequency, consistency and quantity were considered important criteria in defining ETF diarrhoea. The incidence of diarrhoea was 78%. Total patient diarrhoea days (r=0.422; p=0.02) and total diarrhoea frequency (r=0.313; p=0.027) increased when the patient was ETF for longer periods of time. Increased severity of illness, peripheral oxygen saturation (Sp02), glucose control, albumin and white cell count were found to be statistically significant factors for the development of diarrhoea.

CONCLUSION

Diarrhoea in ETF critically ill patients is multi-factorial. The early identification of diarrhoea risk factors and the development of a diarrhoea risk management algorithm is recommended.