In vivo neutron activation analysis for bone calcium (INVAA) in malignant hyperthermia susceptible patients
- 1 March 1979
- journal article
- research article
- Published by Springer Nature in Canadian Journal of Anesthesia/Journal canadien d'anesthésie
- Vol. 26 (2) , 117-124
- https://doi.org/10.1007/bf03013780
Abstract
Some non-rigid Malignant Hyperthermia Susceptible (MHS) patients have a greater than normal incidence of fractures. Radiologically their long bones are slightly thinner than normal. Excessive numbers of caries because of thin dental enamel may also be present. The Malignant Hyperthermic (MH) defect thus appears to involve cells of bone appendages as well as of muscle. We have measured the concentration of calcium in bone by neutron activation analysis and have found it to be reduced in both non-rigid and rigid malignant hyperthermia susceptible patients. The reductions were particularly marked for the non-rigid patients. Bone calcium concentrations were lower in males than in females and in those under 16 and over 60 years of age. This is additional evidence in favour of the hypothesis that malignant hyperthermia is a widespread defect affecting tissues and organs throughout the body. Quelques uns des malades susceptibles à ľhyperthermie maligne présentent une incidence plus élevée de fractures que la normale. A ľexamen radiologique, les os longs de ces malades sont plus minces que normalement. De plus, à cause de la minceur de ľémail dentaire, ils sont quelquefois sujets à un nombre exagéré de caries dentaires. Le défaut en cause dans Thyperthermie maligne semble donc intéresser autant ľossature que la musculature. Nous avons mesuré la concentration du calcium osseux par ľanalyse par activation de neutrons et nous ľavons trouvée abaissée aussi bien chez les malades prédisposés à la forme non rigide qu’à la forme rigide. Cette baisse était plus particuliàrement marquée dans la forme non rigide que dans la forme rigide. La concentration du calcium osseux était plus basse chez les hommes que chez les femmes et chez ceux qui étaient moins âgés que 16 ans et plus âgés que 60 ans.Keywords
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