浙医一院 Neurosurgery
Neurosurgery
浙医一院 INTRACRANIAL DYNAMICS
INTRACRANIAL DYNAMICS
浙医 Fhe first principle is obvious: the cranial cavity has a fixed volume that is filled by various Ings 1. Brain tissue 2. CSF 3. Blood vessels and intravascular blood volume 4. Volume associated with any pathologic process which can include tumor, cyst, abscess hemorrhage, edema, necrosis
The first principle is obvious: the cranial cavity has a fixed volume that is filled by various things: 1. Brain tissue 2. CSF 3. Blood vessels and intravascular blood volume 4. Volume associated with any pathologic process, which can include tumor, cyst, abscess, hemorrhage, edema, necrosis
dhE- A consequence of this principle: If there is an elevation in the volume of any one compartment there is a stage of compensation in which the volume of one or more other compartments can be reduced to avoid elevations in Icp
A consequence of this principle: If there is an elevation in the volume of any one compartment, there is a stage of compensation in which the volume of one or more other compartments can be reduced to avoid elevations in ICP
QUESTION: What is Intracranial Pressure(ICP)? >CP: the pressure produced by the content of the cranial cavity(brain tissue, CSF and blood) on the cranial cavity wall >Normal cp: Adu|t:0.7~2.0kPa(70~200mH20)。 chi|d:0.5~1.0kPa(50~100mH20)
QUESTION: What is Intracranial Pressure (ICP)? ➢ICP：the pressure produced by the content of the cranial cavity (brain tissue, CSF and blood) on the cranial cavity wall. ➢Normal ICP： Adult：0.7～2.0 kPa（70～200mmH2O）。 Child：0.5～1.0kPa（50～100mmH2O）