Abstract
We describe the clinical course and outcome following decompressive craniectomy in six patients. Five patients suffered from severe intracranial hypertension due to middle cerebral artery infarction. In one patient the cause was bacterial meningoencephalitis. Acute clinical and neuroradiological signs of intracranial hypertension were seen in all cases. Following ineffective conventional brain edema therapy, decompressive craniectomy was undertaken. In five cases intracranial pressure was sufficiently lowered. One patient developed transtentorial herniation with subsequent brain death. Four patients with middle artery infarction showed moderate neurological disorders and one patient with bacterial meningoencephalitis recovered completely after treatment. Craniectomy in malignant middle artery infarction should be taken into consideration if conventional brain edema therapy does not sufficiently reduce critically raised intracranial pressure. Craniectomy provides development of brain herniation. This treatment may reduce high lethality rate and high frequency of severe neurological disorders.
Zusammenfassung
Fünf Kasuistiken betreffen die Steigerung des Hirndrucks durch raumfordernde Infarkte der A. cerebri media. Bei einem Patienten lag ein raumforderndes Hirnödem infolge bakterieller Meningoenzephalitis vor. Akut traten klinische und neuroradiologische Zeichen des Hirndrucks bzw. einer drohenden Einklemmung auf. Nachdem alle hirndrucksenkenden konservativen Maßnahmen ausgeschöpft waren, wurde eine Kraniektomie durchgeführt. Bei 5 Patienten konnte so der Hirndruck rechtzeitig beseitigt werden, bei einem Patienten trat dennoch der Hirntod ein. Vier Patienten behielten ein mäßiggradiges neurologisches Defizit durch den Mediainfarkt, der Patient mit Meningoenzephalitis erlebte sogar eine vollständige Restitution. Raumfordernde „maligne” Infarkte der A. cerebri media sollten bei konservativ nicht beherrschbarem Hirndruck einer Kraniektomie zugeführt werden, bevor es zu zerebraler Herniation (z. B. Tentoriumshernie) kommt. Auf diese Weise könnten hohe Letalität und schwerwiegende neurologische Defizite vermieden werden.
Key words
Raised intracranial pressure - Middle cerebral artery infunction - Meningoencephalitis - Craniectomy
Schlüsselwörter
Hirndrucksteigerung - Mediainfarkt - Meningoenzephalitis - Kraniektomie
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Dr. med. B. Raffelsieper
Krankenhaus Merheim Kliniken der Stadt Köln
Ostmerheimer Str. 200
51109 Köln