Systematic review of the evidence of cardiac dysfunction and intravenous fluid use among children with severe acute malnutrition and severe dehydration
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Background
A sizeable proportion of cholera attributed mortality occurs among children with severe acute malnutrition (SAM). International guidelines severely limit the use of intravenous fluids among children with SAM and cholera due to their perceived vulnerability to fluid overload. We reviewed the cardiac function evidence and studies of intravenous fluid use among children with SAM.
Methods
Two systematic reviews of English language papers published after the last Global Task Force for Cholera Control recommendations on the treatment of children with cholera and SAM (2017) were conducted. The first included studies of cardiac function among children presenting to hospital with SAM. The second included studies of intravenous fluid use among children with dehydrating diarrhea and SAM.
Findings
Among eight echocardiographic studies of cardiac function in children with SAM at presentation to hospital, all found left ventricular mass to be decreased but none found systolic function to be impaired. Seven of the eight studies assessing diastolic function found some degree of mild-to-moderate impairment. Two echocardiographic studies monitored responsiveness to intravenous fluid resuscitation and found no evidence of fluid overload. Finally, three studies gave intravenous fluids to children with SAM and either shock or dehydration. Collectively, these studies included 117 children with SAM given intravenous fluid. No cases of fluid overload were observed.
Conclusion
No evidence to support decreased systolic function among children with SAM and no documented cases of fluid overload during intravenous rehydration of these children were identified. These data call into question guidelines that severely restrict intravenous fluids among children with SAM and highly dehydrating conditions such cholera.
