Cerebral AVMs may present in a number of ways

In unruptured brain AVMs, the risk of spontaneous hemorrhage may be as low as 1 % per year.

AVMs may occur in isolation or as a part of another disease ( for example, Von Hippel-Lindau disease or hereditary hemorrhagic telangiectasia ).

Based on this system, AVMs may be classified as grades 1-5.

The lungs normally " filter out " bacteria and blood clots from the bloodstream ; AVMs bypass the capillary network of the lungs and allow these to migrate to the brain, where bacteria may cause a brain abscess and blood clots may lead to stroke.

Bleeding from lung AVMs is relatively unusual, but may cause hemoptysis ( coughing up blood ) or hemothorax ( blood accumulating in the chest cavity ).

Large AVMs may lead to platypnea, difficulty in breathing more marked when sitting up compared to lying down ; this probably reflects changes in blood flow associated with positioning.

Very large AVMs cause a marked inability to absorb oxygen, which may be noted by cyanosis ( bluish discoloration of the lips and skin ), clubbing of the fingernails ( often encountered in chronically low oxygen levels ), and a humming noise over the affected part of the lung detectable by stethoscope.

HPSG generates strings by combining signs, which are defined by their location within a type hierarchy and by their internal feature structure, represented by attribute value matrices ( AVMs ).

AVMs are lesions of the vasculature that develop such that blood flows directly from the arterial system to the venous system without passing through a capillary system.

Arteriovenous malformations, also known as AVMs, are deficiencies of the cardiovascular system.

Instead of the gradual transition through the capillaries from arteries to veins that is typical of normal functioning vasculature, AVMs cause direct associations of the arteries and veins.

AVMs can cause intense pain and lead to serious medical problems.

Although AVMs are often associated with the brain and spinal cord, they can develop in any part of the body.

AVMs have been shown to be associated with Aortic Stenosis.

MRI is more sensitive than CT in the diagnosis of AVMs and provides better information about the exact location of the malformation.

A common method of grading cerebral AVMs is the Spetzler-Martin grade.

Neurosurgeons have begun to utilize endovascular image guided procedures for the treatment of aneurysms, AVMs, carotid stenosis, strokes, and spinal malformations, and vasospasms.

In common notation, AVMs are written with features in upper case and types in italicized lower case.

On 1 November 1938, he was promoted to Air Vice-Marshal, one of the younger AVMs then serving in the RAF.

Bob White pioneered embolization techniques for pulmonary AVMs.

Arteriovenous malformation ( AVM, larger vascular malformations ) occur in larger organs, predominantly the lungs ( 50 %), liver ( 30 – 70 %) and the brain ( 10 %), with a very small proportion (< 1 %) having AVMs in the spinal cord.

HHT is the most common cause of lung AVMs: out of all people found to have lung AVMs, 70 – 80 % are due to HHT.

The symptoms produced by AVMs in the liver depend on the type of abnormal connection that they form between blood vessels.

Liver AVMs are detectable in over 70 % of people with HHT, but only 10 % experience problems as a result.

In the brain, AVMs occasionally exert pressure, leading to headaches.

In addition to cancer, it has also been shown to be beneficial for the treatment of some non-cancerous conditions, including functional disorders such as arteriovenous malformations ( AVMs ) and trigeminal neuralgia.

Moreover, it will be asymmetric until a certain critical Af distance is reached, below which it will become symmetric.

Physicochemical investigations of anionic surfactants, including the soaps, have shown that there is little polymerization or agglomeration of the chain anions below a certain region of concentration called the critical micelle concentration.

At certain critical stages, and only for sound diagnostic reasons, it may be important to accompany family members in their use of these resources if their problem-solving behavior is to be constructive rather than defeating.

However, certain critical interlocutory court orders, such as the denial of a request for an interim injunction, or an order holding a person in contempt of court, can be appealed immediately although the case may otherwise not have been fully disposed of.

At certain critical water levels it is possible for connections with surrounding water bodies to become established.

Some critical observers consider that Uribe's policies, while admittedly reducing crime and guerrilla activity, might be too slanted in favor of a military solution to Colombia's internal war, neglecting grave social and human rights concerns to a certain extent.

Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic fields occurring in certain materials when cooled below a characteristic critical temperature.

This forms the foundation for a secure operating system which, if certain critical parts are designed and implemented correctly, can ensure the absolute impossibility of penetration by hostile elements.

One of the distinguishing characteristics of critical theory, as Adorno and Horkheimer elaborated in their Dialectic of Enlightenment ( 1947 ), is a certain ambivalence concerning the ultimate source or foundation of social domination, an ambivalence which gave rise to the “ pessimism ” of the new critical theory over the possibility of human emancipation and freedom.

It also meant good programming productivity even in assembly language, as high level languages such as Fortran or Algol were not always available or appropriate ( microprocessors in this category are sometimes still programmed in assembly language for certain types of critical applications ).

* Michael Halliday's systemic functional grammar argues that the explanation of how language works " needed to be grounded in a functional analysis, since language had evolved in the process of carrying out certain critical functions as human beings interacted with their ... ' eco-social ' environment ".

These alignment effects only occur at temperatures below a certain critical temperature, called the Curie temperature ( for ferromagnets and ferrimagnets ) or the Néel temperature ( for antiferromagnets ).

In addition, the CRC supplies signals to enable certain critical events ( e. g. probe separation ).

Critics claim that, in political contexts, labeling certain opinions and statements " hate speech " can be used to silence unfavorable or critical opinions and play down debate.

This technique is then used to describe the critical elements of performance in certain jobs and how worker behavior relates to outcomes.

Tables for the critical points of the test statistic are available, and these include certain cases where the distribution being tested is not fully known, so that parameters of the family of distributions are estimated.

* China would agree to continued Japanese occupation in certain critical areas.

Macbeth is an anomaly among Shakespeare's tragedies in certain critical ways.

A critical revision of certain taxonomic groups of the Malvales.

Regulating ER release of Ca < sup > 2 +</ sup > at the MAM is especially critical because only a certain window of Ca < sup > 2 +</ sup > uptake sustains the mitochondria, and consequently the cell, at homeostasis.

According to Stephen Suleyman Schwartz, in his book " The Two Faces of Islam ", “ some say that during this vagabondage Ibn Abdul Wahhab came into contact with certain Englishmen who encouraged him to personal ambition as well as to a critical attitude about Islam .” Specifically, Mir ’ at al Harramin, a Turkish work by Ayyub Sabri Pasha, written in 1888, states that in Basra, Abdul Wahhab had come into contact with a British spy by the name of Hempher, who “ inspired in him the tricks and lies that he had learned from the British Ministry of the Commonwealth .”

He argues that the explanation of how language works " needed to be grounded in a functional analysis, since language had evolved in the process of carrying out certain critical functions as human beings interacted with their ... ' eco-social ' environment ".

For a neutron-initiated chain-reaction to occur, there must be a critical mass of the element present in a certain space under certain conditions ( these conditions slow and conserve neutrons for the reactions ).