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Published on: April 26, 2015
Cardiac rescue with enoximone in volume and catecholamine refractory septic shock
Hannelore I G Ringe1, Verena Varnholt, Gerhard Gaedicke
1Paediatric Intensive Care Unit, Charité Children's Hospital, Humboldt University Berlin, Berlin, Germany. hannelore.ringe@charite.de
Insights
Enoximone effectively restored cardiac function in two children with severe meningococcal septic shock (Waterhouse-Friderichsen syndrome) refractory to standard treatments. This phosphodiesterase inhibitor rapidly improved myocardial contractility and blood pressure, leading to complete recovery.
Area of Science:
- Pediatric Intensive Care Medicine
- Cardiology
- Infectious Diseases
Background:
- Meningococcal disease, particularly Waterhouse-Friderichsen syndrome, can lead to severe endotoxin shock with refractory cardiovascular collapse.
- Standard treatments including catecholamines and fluid resuscitation are often insufficient in critical cases.
Observation:
- Two pediatric patients with meningococcal septic shock (Glasgow score 12) presented with profound cardiovascular deterioration despite maximal conventional therapy.
- Echocardiography revealed severely impaired cardiac function (shortening fraction <10%) and one patient experienced electromechanical uncoupling requiring external cardiac massage.
Findings:
- Administration of enoximone, a phosphodiesterase III inhibitor, rapidly improved cardiac output and blood pressure in both patients.
- Enoximone treatment led to a significant increase in shortening fraction to over 30% and allowed for reduction of catecholamine infusions.
Implications:
- Enoximone is a promising therapeutic option for severe, catecholamine-refractory endotoxin shock in pediatric patients with meningococcal disease.
- Early consideration of enoximone may improve outcomes in life-threatening cases of Waterhouse-Friderichsen syndrome with myocardial dysfunction.
Abstract:
In December 2000 and February 2001, two children with suspected meningococcal disease were admitted to our pediatric intensive unit. Their Glasgow Meningococcal Septicaemia Prognostic score was 12 points. General treatment including antibiotics, steroids in case of meningitis, and fluid replacement, was performed. Despite appropriate volume replacement, intubation and ventilation, noradrenaline and adrenaline continuous infusions < or =1.0 microg/kg/min, and additional bolus infusions, cardiac output deteriorated within minutes in both children. Calcium and bicarbonate were given without sustained effect. Echocardiography demonstrated no pericardial effusion and shortening fraction was <10%. External cardiac massage had to be performed immediately in one case for electromechanical uncoupling. Both patients received a bolus of enoximone 2 mg/kg and 5 mg/kg body weight, respectively, followed by a continuous infusion of 20-23 microg/kg/min. Thereafter, both children had an adequate blood pressure and their shortening fraction increased to >30%. Within minutes, the catecholamine infusion could be reduced in both patients. The children completely recovered from their life-threatening situations. In patients with severe prolonged catecholamine and volume refractory endotoxin shock in Waterhouse-Friderichsen syndrome, even with electromechanical uncoupling and complete myocardial arrest, enoximone can immediately restore myocardial contractility.
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