Use of the calcium agonist BAY K 8644 for in vitro diagnosis of susceptibility to malignant hyperthermia.

Adnet, P J; Krivosic-Horber, R M; Haudecoeur, G; Adamantidis, M M; Reyford, G H; Imbenotte, M; Cordonnier, C · Br J Anaesth · 1990

basic_science · Level V

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Abstract

We have studied the effects of the calcium agonist BAY K 8644 on the in vitro halothane test in 10 malignant hyperthermia-susceptible (MHS), 12 MH "equivocal" to halothane (MHEh), 30 MH non-susceptible (MHN) and 10 control patients. BAY K 8644 potentiated the halothane-induced contracture in muscle strips from both MHS and MHEh patients. The drug produced a more obvious difference in contracture responses between the MHEh group compared with the MHN and control groups.

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