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Recommendations for weaning off cardiopulmonary support in children with fulminant myocarditis
Hiroshi Kanamaru1, Kensuke Karasawa, Osamu Abe
1Department of Pediatrics and Childhealth, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan. hkin@med.nihon-u.ac.jp
Insights
Cardiopulmonary support (CPS) can be safely used in children with fulminant myocarditis. Weaning CPS can occur before symptomatic bleeding, with improved biomarkers and oxygen saturation.
Area of Science:
- Pediatric Cardiology
- Critical Care Medicine
- Cardiovascular Surgery
Background:
- Fulminant myocarditis presents a critical challenge in pediatric care.
- Cardiopulmonary support (CPS) is a vital intervention for severe cases.
Purpose of the Study:
- To establish optimal recommendations for weaning children off cardiopulmonary support (CPS) in cases of fulminant myocarditis.
Main Methods:
- Retrospective analysis of four pediatric patients with fulminant myocarditis treated with CPS.
- Evaluation of factors influencing CPS weaning: bleeding, platelet count, CK-MB, echocardiography, and SvO2.
Main Results:
- CPS was safely administered for a mean of 53.1 hours without circuit changes.
- Bleeding occurred in three patients prior to CPS discontinuation.
- Platelet nadir coincided with weaning; peak CK-MB decreased, and SvO2 improved upon weaning.
Conclusions:
- Cardiopulmonary support is a viable treatment for pediatric fulminant myocarditis, allowing for safe circuit use.
- CPS can be discontinued in pediatric fulminant myocarditis patients before symptomatic bleeding, with favorable biomarker and oxygen saturation trends.
Background:
The purpose of this study was to determine the appropriate recommendations for weaning off cardiopulmonary support (CPS) in children with fulminant myocarditis.
Methods And Results:
Four consecutive patients diagnosed with fulminant myocarditis who were treated with CPS were enrolled (mean age: 9 years). The relationships between timing of weaning from CPS and various factors, including bleeding episodes, platelet count, serum concentration of the MB isoform of creatine kinase (CK-MB), echocardiographic findings, and the mixed venous blood oxygen saturation (SvO2), were retrospectively analyzed. All patients had CPS performed safely for a mean duration of 53.1 h without exchange of the circuit. Three of the 4 patients had a bleeding episode before discontinuation. The minimum platelet count occurred during weaning in all 4 patients. The peak serum CK-MB concentration when initiating CPS was higher than the peak value on the day of weaning. Echocardiographic findings before stopping CPS were similar to those after weaning. The SvO2 was 62.5% when initiating CPS and 71.3% before weaning.
Conclusions:
In children with fulminant myocarditis CPS can be used without exchanging the circuit and can be discontinued before bleeding episodes become symptomatic, with improvement in the biomarkers and SvO2 on weaning off CPS.
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