Abstract
Introduction
Weight loss in cancer patients is a worrisome constitutional change predicting disease progression and shortened survival time. A logical approach to counter some of the weight loss is to provide nutritional support, administered through enteral nutrition (EN) or parenteral nutrition (PN). The aim of this paper was to update the original systematic review and meta-analysis previously published by Chow et al., while also assessing publication quality and effect of randomized controlled trials (RCTs) on the meta-conclusion over time.
Methods
A literature search was carried out; screening was conducted for RCTs published in January 2015 up until December 2018. The primary endpoints were the percentage of patients achieving no infection and no nutrition support complications. Secondary endpoints included proportion of patients achieving no major complications and no mortality. Review Manager (RevMan 5.3) by Cochrane IMS and Comprehensive Meta-Analysis (version 3) by Biostat were used for meta-analyses of endpoints and assessment of publication quality.
Results
An additional seven studies were identified since our prior publication, leading to 43 papers included in our review. The results echo those previously published; EN and PN are equivalent in all endpoints except for infection. Subgroup analyses of studies only containing adults indicate identical risks across all endpoints. Cumulative meta-analysis suggests that meta-conclusions have remained the same since the beginning of publication time for all endpoints except for the endpoint of infection, which changed from not favoring to favoring EN after studies published in 1997. There was low risk of bias, as determined by assessment tool and visual inspection of funnel plots.
Conclusions
The results support the current European Society of Clinical Nutrition and Metabolism guidelines recommending enteral over parenteral nutrition, when oral nutrition is inadequate, in adult patients. Further studies comparing EN and PN for these critical endpoints appear unnecessary, given the lack of change in meta-conclusion and low publication bias over the past decades.
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Change history
31 December 2019
The appendices were incorrectly numbered in the original article. Please see below correcct appendices
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The original version of this article was revised. The appendices was numbered incorrectly.
Appendices
Appendix 1. Search Strategy
Database: Ovid MEDLINE(R) and Epub Ahead of Print, In-Process & Other Non-Indexed
Citations, Daily and Versions(R) <1946 to December 20, 2018 > Search Strategy:
Appendix 2. PRISMA Flow Diagram
Appendix 3
No mortality for enteral nutrition (EN) and parenteral nutrition (PN) patients. 3.1 Analyses by EN—tube feeding and standard care. 3.2 Analyses by nutrition status—protein energy
Appendix 3.1
Appendix 3.2
Appendix 3.3
Appendix 4
No mortality for enteral (EN) and parenteral nutrition (PN) patients, over time
Appendix 5
Assessment of risk of bias
Appendix 6
Assessment of publication bias for endpoint “No infection” 6.1 Assessment by enteral nutrition (EN) – tube feeding and standard care 6.2 Assessment by nutrition status – protein energy malnutrition (PEM) and PEM 6.3 Assessment by age of population – children and adults
Appendix 6.1
Appendix 6.2
Appendix 6.3
Appendix 7
Assessment of publication bias for endpoint “No nutrition support complications” 7.1 Assessment by enteral nutrition (EN) – tube feeding and standard care 7.2 Assessment by nutrition status – protein energy malnutrition (PEM) and PEM 7.3 Assessment by age of population – children and adults
Appendix 7.1
Appendix 7.2
Appendix 7.3
Appendix 8
Assessment of publication bias for endpoint “No major complications” 8.1 Assessment by enteral nutrition (EN) – tube feeding and standard care 8.2 Assessment by nutrition status – protein energy malnutrition (PEM) and PEM 8.3 Assessment by age of population – children and adults
Appendix 8.1
Appendix 8.2
Appendix 8.3
Appendix 9
Assessment of publication bias for endpoint “No mortality” 9.1 Assessment by enteral nutrition (EN) – tube feeding and standard care 9.2 Assessment by nutrition status – protein energy malnutrition (PEM) and PEM 9.3 Assessment by age of population – children and adults
Appendix 9.1
Appendix 9.2
Appendix 9.3
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Chow, R., Bruera, E., Arends, J. et al. Enteral and parenteral nutrition in cancer patients, a comparison of complication rates: an updated systematic review and (cumulative) meta-analysis. Support Care Cancer 28, 979–1010 (2020). https://doi.org/10.1007/s00520-019-05145-w
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DOI: https://doi.org/10.1007/s00520-019-05145-w