Cardioplegia in paediatric cardiac surgery: a systematic review of randomized controlled trials

<strong>Objectives</strong> Cardioplegia is the primary method for myocardial protection during cardiac surgery. We conducted a systematic review of randomized controlled trials of cardioplegia in children to evaluate the current evidence base. <strong>Methods</strong> We se...

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Main Authors: Drury, N, Yim, I, Patel, A, Oswald, N, Chong, C, Stickley, J, Jones, T
Format: Journal article
Published: Oxford University Press 2018
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author Drury, N
Yim, I
Patel, A
Oswald, N
Chong, C
Stickley, J
Jones, T
author_facet Drury, N
Yim, I
Patel, A
Oswald, N
Chong, C
Stickley, J
Jones, T
author_sort Drury, N
collection OXFORD
description <strong>Objectives</strong> Cardioplegia is the primary method for myocardial protection during cardiac surgery. We conducted a systematic review of randomized controlled trials of cardioplegia in children to evaluate the current evidence base. <strong>Methods</strong> We searched MEDLINE, CENTRAL and LILACS and manually screened retrieved references and systematic reviews to identify all randomized controlled trials comparing cardioplegia solutions or additives in children undergoing cardiac surgery published in any language; secondary publications and those reporting inseparable adult data were excluded. Two or more reviewers independently screened studies for eligibility and extracted data; the Cochrane Risk of Bias tool was used to assess for potential biases. <strong>Results</strong> We identified 26 trials randomizing 1596 children undergoing surgery; all were single-centre, Phase II trials, recruiting few patients (median 48, interquartile range 30–99). The most frequent comparison was blood versus crystalloid in 10 (38.5%) trials, and the most common end points were biomarkers of myocardial injury (17, 65.4%), inotrope requirements (15, 57.7%) and length of stay in the intensive care unit (11, 42.3%). However, the heterogeneity of patients, interventions and reported outcome measures prohibited meta-analysis. Overall risk of bias was high in 3 (11.5%) trials, unclear in 23 (88.5%) and low in none. <strong>Conclusions</strong> The current literature on cardioplegia in children contains no late phase trials. The small size, inconsistent use of end points and low quality of reported trials provide a limited evidence base to inform practice. A core outcome set of clinically important, standardized, validated end points for assessing myocardial protection in children should be developed to facilitate the conduct of high-quality, multicentre trials.
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spelling oxford-uuid:40d42254-8574-4d72-9bda-b67d0ff13c052022-03-26T14:40:13ZCardioplegia in paediatric cardiac surgery: a systematic review of randomized controlled trialsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:40d42254-8574-4d72-9bda-b67d0ff13c05Symplectic Elements at OxfordOxford University Press2018Drury, NYim, IPatel, AOswald, NChong, CStickley, JJones, T<strong>Objectives</strong> Cardioplegia is the primary method for myocardial protection during cardiac surgery. We conducted a systematic review of randomized controlled trials of cardioplegia in children to evaluate the current evidence base. <strong>Methods</strong> We searched MEDLINE, CENTRAL and LILACS and manually screened retrieved references and systematic reviews to identify all randomized controlled trials comparing cardioplegia solutions or additives in children undergoing cardiac surgery published in any language; secondary publications and those reporting inseparable adult data were excluded. Two or more reviewers independently screened studies for eligibility and extracted data; the Cochrane Risk of Bias tool was used to assess for potential biases. <strong>Results</strong> We identified 26 trials randomizing 1596 children undergoing surgery; all were single-centre, Phase II trials, recruiting few patients (median 48, interquartile range 30–99). The most frequent comparison was blood versus crystalloid in 10 (38.5%) trials, and the most common end points were biomarkers of myocardial injury (17, 65.4%), inotrope requirements (15, 57.7%) and length of stay in the intensive care unit (11, 42.3%). However, the heterogeneity of patients, interventions and reported outcome measures prohibited meta-analysis. Overall risk of bias was high in 3 (11.5%) trials, unclear in 23 (88.5%) and low in none. <strong>Conclusions</strong> The current literature on cardioplegia in children contains no late phase trials. The small size, inconsistent use of end points and low quality of reported trials provide a limited evidence base to inform practice. A core outcome set of clinically important, standardized, validated end points for assessing myocardial protection in children should be developed to facilitate the conduct of high-quality, multicentre trials.
spellingShingle Drury, N
Yim, I
Patel, A
Oswald, N
Chong, C
Stickley, J
Jones, T
Cardioplegia in paediatric cardiac surgery: a systematic review of randomized controlled trials
title Cardioplegia in paediatric cardiac surgery: a systematic review of randomized controlled trials
title_full Cardioplegia in paediatric cardiac surgery: a systematic review of randomized controlled trials
title_fullStr Cardioplegia in paediatric cardiac surgery: a systematic review of randomized controlled trials
title_full_unstemmed Cardioplegia in paediatric cardiac surgery: a systematic review of randomized controlled trials
title_short Cardioplegia in paediatric cardiac surgery: a systematic review of randomized controlled trials
title_sort cardioplegia in paediatric cardiac surgery a systematic review of randomized controlled trials
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AT oswaldn cardioplegiainpaediatriccardiacsurgeryasystematicreviewofrandomizedcontrolledtrials
AT chongc cardioplegiainpaediatriccardiacsurgeryasystematicreviewofrandomizedcontrolledtrials
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