Pediatr Crit Care Me
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Pediatr Crit Care Me · Jan 2012
Comparative StudyThe effect of critical illness and inflammation on midazolam therapy in children.
To determine the effect of inflammation and disease severity on midazolam pharmacokinetics (as surrogate marker of cytochrome 3A activity) and pharmacodynamics in critically ill children. ⋯ Results from this pilot study suggest that increased disease severity is associated with reduced midazolam clearance in critically ill children, most likely as a result of reduced cytochrome 3A activity. In contrast, reduced midazolam clearance does not seem to result in decreased midazolam dose requirements.
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Pediatr Crit Care Me · Jan 2012
Ultrasound dilution: an accurate means of determining cardiac output in children.
Cardiac output is a useful measure of myocardial performance. Cardiac output monitoring is frequently performed in critically ill adults to guide physicians' treatment strategies. However, standard methods of determining cardiac output in children are not without risk and can be problematic secondary to their invasive nature and other technical problems. The COstatus system (Transonic Systems, NY), which is based on ultrasound dilution technology, works off in situ catheters and uses an innocuous indicator to allow for routine measurements of cardiac output and blood volumes in pediatric patients. The purpose of this study was to validate cardiac output measured by the COstatus system with those obtained by the clinical standard technique of pulmonary artery thermodilution. ⋯ The ultrasound dilution technique of determining cardiac output using the COstatus system provides a less invasive method than the traditional pulmonary artery thermodilution for accurately determining cardiac output in children. This is the first validation of the COstatus system in pediatric patients. Further studies are required to establish its accuracy in pediatric patients with cardiac shunts and other hemodynamically unstable conditions.
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Pediatr Crit Care Me · Jan 2012
Invasive intracranial pressure monitoring is a useful adjunct in the management of severe hepatic encephalopathy associated with pediatric acute liver failure.
Pediatric acute liver failure is often accompanied by hepatic encephalopathy, cerebral edema, and raised intracranial pressure. Elevated intracranial pressure can be managed more effectively with intracranial monitoring, but acute-liver-failure-associated coagulopathy is often considered a contraindication for invasive monitoring due to risk for intracranial bleeding. We reviewed our experience with use of early intracranial pressure monitoring in acute liver failure in children listed for liver transplantation. ⋯ In our series of patients, intracranial pressure monitoring had a low complication rate and was associated with a high survival rate despite severe hepatic encephalopathy and cerebral edema in the setting of pediatric acute liver failure. In our experience, monitoring of intracranial pressure allowed interventions to treat increased intracranial pressure and provided additional information regarding central nervous system injury before liver transplant. Further study is warranted to confirm if monitoring allows more directed intracranial pressure therapy and improves survival in pediatric acute liver failure.
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Pediatr Crit Care Me · Jan 2012
Comparative StudyExtracorporeal membrane oxygenation support for intractable primary arrhythmias and complete congenital heart block in newborns and infants: short-term and medium-term outcomes.
To describe the experience with extracorporeal membrane oxygenation support for intractable primary arrhythmias in newborns and infants. ⋯ The requirement of extracorporeal membrane oxygenation support in newborns and infants with intractable arrhythmia is rare. Extracorporeal membrane oxygenation support does potentially carry morbidity; however, to prevent arrhythmia-related mortality, extracorporeal membrane oxygenation support and/or extracorporeal cardiopulmonary resuscitation should be considered in the management of hemodynamically unstable primary arrhythmias as an emergent lifesaving procedure.
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Previous simulation studies suggest that temporary pediatric mass critical care approaches would accommodate plausible hypothetical sudden-impact public health emergencies. However, the utility of sustained pediatric mass critical care responses in prolonged pandemics has not been evaluated. The objective of this study was to compare the ability of a typical region to serve pediatric intensive care unit needs in hypothetical pandemics, with and without mass critical care responses sufficient to triple usual pediatric intensive care unit capacity. DESIGN, SETTING, PATIENTS, AND INTERVENTIONS: The Monte Carlo simulation method was used to model responses to hypothetical pandemics on the basis of national historical evidence regarding pediatric intensive care unit admission and length of stay in pandemic and nonpandemic circumstances. Assuming all ages are affected equally, federal guidelines call for plans to serve moderate and severe pandemics requiring pediatric intensive care unit care for 457 and 5,277 infants and children per million of the population, respectively. ⋯ Mass critical care approaches would be essential to extend care to the majority of infants and children in a severe pandemic. However, some patients needing critical care still could not be accommodated, requiring consideration of rationing.