Hypoxic encephalopathy after near-drowning studied by quantitative 1H-magnetic resonance spectroscopy
| Autor: | Roland Kreis, Thomas Ernst, Truda Shonk, R Flores, Edgardo Arcinue, B D Ross |
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| Rok vydání: | 1996 |
| Předmět: |
Male
Pathology medicine.medical_specialty Magnetic Resonance Spectroscopy Metabolite Poison control Brain damage White matter chemistry.chemical_compound Near Drowning medicine Humans Child Hypoxia Brain Diseases business.industry Glutamate receptor Brain Infant General Medicine Nuclear magnetic resonance spectroscopy Hypoxia (medical) Prognosis Glutamine medicine.anatomical_structure chemistry Child Preschool Female medicine.symptom business Research Article |
| Zdroj: | The Journal of clinical investigation. 97(5) |
| ISSN: | 0021-9738 |
| Popis: | Early prediction of outcome after global hypoxia of the brain requires accurate determination of the nature and extent of neurological injury and is cardinal for patient management. Cerebral metabolites of gray and white matter were determined sequentially after near-drowning using quantitative 1H nuclear magnetic resonance spectroscopy (MRS) in 16 children. Significant metabolite abnormalities were demonstrated in all patients compared with their age-matched normal controls. Severity of brain damage was quantified from metabolite concentrations and ratios. Loss of N-acetylaspartate, a putative neuronal marker, from gray matter preceded that observed in white matter and was more severe. Total creatine decreased, while lactate and glutamine/glutamate concentrations increased. Changes progressed with time after injury. A spectroscopic prognosis index distinguished between good outcome (n = 5) and poor outcome (n = 11) with one false negative (bad outcome after borderline MRS result) and no false positive results (100% specificity). The distinction was made with 90% sensitivity early (after 48 h) and became 100% later (by days 3 and 4). This compared with 50-75% specificity and 70-100% sensitivity based upon single clinical criteria. MRS performed sequentially in occipital gray matter provides useful objective information which can significantly enhance the ability to establish prognosis after near-drowning. |
| Databáze: | OpenAIRE |
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