Screening test for malignant hyperthermia in patients with persistent hyperCKemia: a pilot study.

Stephan Johannsen, Christina Berberich, Thomas Metterlein, Cosima Roth, Karlheinz Reiners, Norbert Roewer, Frank Schuster

Department of Anaesthesia and Critical Care, University of Wuerzburg, Oberduerrbacher Strasse 6, D-97080 Wuerzburg, Germany.

Muscle & nerve 2013 May

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Persistently elevated serum creatine kinase (CK) is frequently associated with predisposition to malignant hyperthermia (MH). We investigated whether a minimally invasive metabolic test is suitable to diagnose MH susceptibility among patients with hyperCKemia. Thirty-nine participants were included: 10 were MH susceptible (MHS); 21 MH were non-susceptible (MHN); and 8 had MHN with persistent hyperCKemia >500 U/L. Microdialysis probes were inserted into the vastus lateralis muscle, and halothane or caffeine was injected via an attached microtubing catheter. Lactate concentrations in dialysis samples were measured spectrophotometrically. Baseline lactate did not differ between the groups. After local application of halothane or caffeine, a significant lactate increase was detected only in the MHS group. Test results were not influenced by hyperCKemia. To avoid risks and complications of a surgical muscle biopsy this microdialysis test might be a useful screening tool for MH susceptibility among patients with persistent CK elevation. Copyright © 2012 Wiley Periodicals, Inc.

Citation

Stephan Johannsen, Christina Berberich, Thomas Metterlein, Cosima Roth, Karlheinz Reiners, Norbert Roewer, Frank Schuster. Screening test for malignant hyperthermia in patients with persistent hyperCKemia: a pilot study. Muscle & nerve. 2013 May;47(5):677-81