The results demonstrate that the mortality for correction of congenital heart defects in children weighing less than 3000 g depends on several factors. The risk groups of the RACHS-1 study and the complexity levels of the Aristotle score are useful tools to assess preoperative risk.
In this article we present the symptomatic features and discuss relevant diagnostic and therapeutic aspects of anaphylactoid reactions. In addition we give practical advice as to how to avoid and manage allergic or pseudoallergic reactions during anaesthesia. Measurements of serum tryptase-levels and of methylhistamine in urine have been introduced in clinical diagnostic routine. Skin tests and determination of specific antibodies are essential to identify responsible substances. Preventive measures like careful premedication, calm atmosphere, slow injection of drugs, the use of diluted solutions, and the use of drugs with a low potential for anaphylactoid reactions are important. Substances like inhalation anaesthetics, propofol, etomidate, ketamine, midazolam, fentanyl, alfentanil and bupivacain without epinephrine should be used.
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