A&A practice
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Depth of anesthesia (DoA) monitors are widely used during general anesthesia to guide individualized dosing of hypnotics. Other than age and specific drugs, there are few reports on which comorbidities may influence the brain and the resultant electroencephalogram (EEG) of patients undergoing general anesthesia. We present a case of a patient undergoing 3 cardiac operations within 7 months with severe illness and comorbidity, leading to pronounced physical frailty and significant changes of frontal alpha power in the EEG and increased sensitivity to volatile anesthetics. These findings may have important clinical implications and should trigger further investigations on this topic.
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Although originally described to assist airway management of fetal congenital malformations with life-threatening airway obstruction, the indications for an ex utero intrapartum treatment (EXIT) have expanded to include surgical resection of lesions that are potentially incompatible with life in the absence of uteroplacental circulatory support. We describe the case of an infantile fibrosarcoma (IFS) that presented with fetal hydrops and was successfully managed with an emergency EXIT that necessitated the initiation of a massive fetal blood transfusion both with and without the support of uteroplacental circulation.
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One of the many safety features of modern day anesthesia machines is the adjustable pressure limiting (APL) valve. This device regulates pressure within the anesthesia circuit during manual ventilation with the anesthesia bag. We report an unusual case where a crack in the APL valve allowed release of pressure from within the circuit resulting in ineffective bag-valve-mask ventilation of an infant. The appropriate steps to prevent such issues are reviewed, and an algorithm to quickly identify such intraoperative problems is presented.
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Ventricular tachycardia (VT) storm, defined as recurrent VT requiring electrical cardioversion ≥3 times within 24 hours, is a rare presentation of long-QT syndrome. Pharmacologic autonomic modulation and/or left cardiac sympathetic denervation are established therapies in long-QT syndrome in adults but may not be effective or practical in the emergent treatment of VT storm. We present a novel case of a child with drug-refractory VT storm and prolonged QT requiring extracorporeal membrane oxygenation (ECMO) support. Continuous stellate ganglion blockade was remarkably effective in stabilizing his rhythm and should be considered in similar pediatric cases.