Monro Kellie Doctrine Icp

What is the monro kellie doctrine. The monro kellie hypothesis states that the cranial compartment is inelastic and that the volume inside the cranium is fixed.

Monro Kellie Doctrine Pathophysiology Herniation Teachmesurgery

The monro kellie doctrine states that the skull is a rigid compartment and contains three components.

Monro kellie doctrine icp. Brain blood and cerebrospinal fluid. Soooooo glad you asked. Elevated icp is a common and life threatening complication of tbi.

The pressure volume relationship between icp volume of csf blood and brain tissue and cerebral perfusion pressure cpp is known as the monro kellie doctrine or hypothesis. Mŏn rō a doctrine that states that the cranial cavity is a closed rigid box and that therefore a change in the quantity of intracranial blood can occur only through the displacement of or replacement by cerebrospinal fluid. If an increase occurs in the volume of one component the volume of one or more other components must decrease or icp will be elevated.

It is important to understand that a 180 phase shift is not always equivalent to good stabilization of icp. Inside the skull cavity there are three things taking up the space there the brain the blood and the csf. When one compartment expands the other decreases in volume and vice versa.

This hypothesis was supported by experiments by kellie. In its original form the hypothesis had shortcomings that prompted modification by others. A short animation covering some of the basic theory of icp intracranial dynamics and the monro kellie hypothesis.

More than two centuries ago alexander monro applied some of the principles of physics to the intracranial contents and for the first time hypothesized that the blood circulating in the cranium was of constant volume at all times. Part of a series of videos on icp manageme. In non pathological states three components exist in equilibrium to maintain normal intracranial pressure the brain tissue the blood and the cerebrospinal fluid.

What finally came to be known as the monro kellie doctrine or hypothesis is that the. This hypothesis was supported by experiments by kellie. The monro kellie doctrine describes the relationship between the contents of the cranium and intracranial pressure.

Monro kellie doctrine. More than two centuries ago alexander monro applied some of the principles of physics to the cranial cavity and for the first time hypothesized that the blood circulating in the cranium was of constant volume at all times. This elegantly simple yet highly applicable doctrine tells you pretty much everything you need to know about why we must manage icp.

A shift of 180 degrees is demonstrated specifically when the monro kellie doctrine is followed. Now because the skull is a fixed.

Monro Kellie Doctrine Pathophysiology Herniation Teachmesurgery