Metabolic decompensation in methylmalonic aciduria: which biochemical parameters are discriminative?
Recurrent, life-threatening metabolic decompensations often occur in patients with methylmalonic aciduria (MMAuria). Our study evaluated (impending) metabolic decompensations in these patients aiming to identify the most frequent and reliable clinical and biochemical abnormalities that could be help...
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| Hauptverfasser: | , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
17 January 2012
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| In: |
Journal of inherited metabolic disease
Year: 2012, Jahrgang: 35, Heft: 5, Pages: 797-806 |
| ISSN: | 1573-2665 |
| DOI: | 10.1007/s10545-011-9426-1 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1007/s10545-011-9426-1 Verlag, Volltext: https://doi.org/10.1007/s10545-011-9426-1 
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| Verfasserangaben: | Tamaris Zwickler, Gisela Haege, Alina Riderer, Friederike Hörster, Georg F. Hoffmann, Peter Burgard, Stefan Kölker |
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| 245 | 1 | 0 | |a Metabolic decompensation in methylmalonic aciduria |b which biochemical parameters are discriminative? |c Tamaris Zwickler, Gisela Haege, Alina Riderer, Friederike Hörster, Georg F. Hoffmann, Peter Burgard, Stefan Kölker |
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| 520 | |a Recurrent, life-threatening metabolic decompensations often occur in patients with methylmalonic aciduria (MMAuria). Our study evaluated (impending) metabolic decompensations in these patients aiming to identify the most frequent and reliable clinical and biochemical abnormalities that could be helpful for decision-making on when to start an emergency treatment. Seventy-six unscheduled and 179 regular visits of 10 patients with confirmed MMAuria continuously followed by our metabolic centre between 1975 and 2009 were analysed. The most frequent symptom of an impending acute metabolic decompensation was vomiting (90% of episodes), whereas symptoms of intercurrent infectious disease (29%) or other symptoms (such as food refusal and impaired consciousness) were found less often. Thirty-five biochemical parameters were included in the analysis. Among them, pathological changes of acid-base balance reflecting metabolic acidosis with partial respiratory compensation (decreased pH, pCO2, standard bicarbonate, and base excess) and elevated ammonia were the most reliable biochemical parameters for the identification of a metabolic decompensation and the estimation of its severity. In contrast, analyses of organic acids, acylcarnitines and carnitine status were less discriminative. In conclusion, careful history taking and identification of suspicious symptoms in combination with a small number of rapidly available biochemical parameters are helpful to differentiate compensated metabolic condition and (impending) metabolic crisis and to decide when to start an emergency treatment. | ||
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