• Ann. Thorac. Surg. · Jun 2002

    Lactic acidosis after cardiac surgery is associated with polymorphisms in tumor necrosis factor and interleukin 10 genes.

    • Thomas Ryan, Joanna Balding, Eilis M McGovern, John Hinchion, Wendy Livingstone, Zeb Chughtai, and Owen P Smith.
    • Department of Anaesthesia, St. James's Hospital, Dublin, Ireland. ryants@iol.ie
    • Ann. Thorac. Surg. 2002 Jun 1; 73 (6): 1905-9; discussion 1910-1.

    BackgroundLactic acidosis after cardiac surgery is a manifestation of excess cytokine production. Cytokine-related genetic polymorphisms account for variability in cytokine response and may predispose to the development of lactic acidosis after cardiac surgery.MethodsRoutine postoperative cardiac surgery patients were studied. Lactic acid levels were greater than 4 mmol/L in study patients and less than 4 mmol/L in controls. Polymerase chain reaction-based techniques were used to examine carriage of tumor necrosis factor beta (TNF-beta), TNF G-308A, and interleukin 10 (IL-10) G-1082A alleles.ResultsDemographic characteristics and details of surgery were similar for 30 control and 21 study patients. Lactic acid levels after intensive care admission changed over time and were related to both TNF-beta and IL-10 G-1082A polymorphisms. All 4 study patients homozygous for TNF-beta1 and carrying an IL-10-1082A allele developed lactic acidosis (p = 0.02). There was no relation between the rate of epinephrine infusion or duration of cardiopulmonary bypass and lactic acid levels.ConclusionsGenetic factors have a role in the development of lactic acidosis after cardiac surgery.

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