الفهرس 
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Abstract
S1JMMARY
Neurosurgical anaesthesia. in the last years.
has almost reached the status of a separate
specialtyc. Clinical experience suggests that the
nost important mechanism in the control of cerebral
blood flow is autoregulation. by altering cerebral
vascular resistance. cerebral blood flow normally
is maintained constant over a wide range of
systemic arterial blood pressure General
anaesthesia. may diminish this stabilizing effect
with a consequent potential for an increase in
intracranial pre~sure However. clinical
concentrations of isoflurane (up to 1.5 MAC) permit
maintenace of a constant intracranial pressure
despite considrable variations in blood pressure .
Decreasing Pa C02is generally the quickest
and most retiable means of treating intracranial
hypertension Again. many factors like posture.
osmotic diuretics like mannitol as well as high
doses of corticosteroids and barbiturates play an
important role in the treatment of intracranial
hypertension .
For over 100 years. controversy has existed
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about the best anesthetic technique for patients
with neurological diseae. However, iso”fluranehas
several advantages and favourable characteristics
not shared by other halogenated agents, which make
it the anaesthetic of choice for neurosurgical
anaesthesia ~utoregulation was better preserved
in posterior fossa structures with isoflurane wich
suggested that it may be the most suitable
anesthetic for posterior fossa operations.
The proper and safe practice of anaesthesia
requires adequate monitoring Monitoring during
neurosurgical anesthesia is either routine or
specialized montoring . routine monitoring include
monitoring of pulse, blood pressure, E.C.G, central
venous pressure (C.V.PI, and monitoring of urine
output
While specialized monitoring include End
tidal CO2 montioring (capnographyl, I.C.P
monitoring, EEG (Electro encephalagroml and Evoked
potentials monitoring .
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