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Controversies in paediatric continuous renal replacement therapy
Graeme Maclaren1, Warwick Butt
1Departments of Paediatrics and Cardiac Surgery, National University Health System, Singapore, Singapore. gmaclaren@iinet.net.au
Insights
Continuous renal replacement therapy (CRRT) in children is vital for critical illnesses. Early initiation and specific methods like continuous hemodialysis with citrate anticoagulation may improve outcomes, though optimal application remains debated.
Area of Science:
- Pediatric Critical Care Medicine
- Nephrology
- Renal Replacement Therapies
Background:
- Continuous renal replacement therapy (CRRT) supports critically ill children with diverse conditions like acute renal failure and multiorgan failure.
- Despite its value, the optimal application of CRRT in pediatric patients remains undetermined.
Purpose of the Study:
- To review the basic techniques of CRRT in children.
- To highlight differences in CRRT prescription between pediatric and adult patients.
- To discuss current controversies and evidence regarding CRRT application in pediatric critical care.
Main Methods:
- Literature review focusing on CRRT in pediatric critical care.
- Analysis of existing evidence and clinical controversies.
- Discussion of findings from a prospective, multicentre pediatric CRRT registry.
Main Results:
- CRRT indications, mode, dose, and anticoagulation strategies are subjects of ongoing debate.
- Large-scale randomized trials comparable to adult medicine are lacking in the pediatric population.
- A prospective, multicentre pediatric CRRT registry has been established.
Conclusions:
- Early CRRT initiation before significant fluid overload may improve outcomes.
- Continuous hemofiltration for conditions like post-stem cell transplant respiratory failure is considered.
- Continuous hemodialysis and citrate anticoagulation show potential for prolonging circuit life and improving outcomes.
Background:
Continuous renal replacement therapy (CRRT) is an invaluable means of supporting critically ill children with many illnesses, including acute renal failure, drug intoxication, inborn errors of metabolism, and multiorgan failure. However, the ideal method of applying the technique is unknown.
Discussion:
The indications for initiation of CRRT, mode, dose, and means of anticoagulating the circuit to prolong filter life are all subjects of controversy. The formation of a prospective, multicentre paediatric CRRT registry has been a major step forward but large, randomised trials of the sort that exist in adult medicine are lacking. This review describes the basic technique of CRRT, highlights the differences between adult and paediatric prescription, and elaborates on the main controversies in the application of CRRT in children.
Conclusions:
Current evidence suggests that early initiation of CRRT before the onset of substantial fluid overload, considering continuous haemofiltration in disease states such as respiratory failure following stem cell transplantation, and the use of continuous haemodialysis and citrate anticoagulation to prolong circuit life may be associated with improved outcomes.
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