A Wisdom Archive on ischemia

Cryonics - Damage from ice formation and ischemia. Cryonics has traditionally been dismissed by mainstream cryobiology, of which it is arguably a part. The reason generally given for this dismissal is that the freezing process creates ice crystals, which some scientists have claimed damage cells and cellular structures so as to render any future repair impossible. Cryonicists have long argued, however, that the extent of this damage was greatly exaggerated by the critics, presuming that some reasonable attempt is made to perfuse the body with cryoprotectant chemicals (traditiona ...

Read more here: » Cryonics: Encyclopedia II - Cryonics - Obstacles to success

Patients with cerebellar dysfunction experience problems in walking, balance, and accurate hand and arm movement. Recent brain imaging studies using functional magnetic resonance imaging (fMRI) show that the cerebellum is important for language processing and selective attention. Neuropsychiatric disorders such as dyslexia and autism appear to be associated with a deficiency in the cerebellum, which may also play a role in the development of certain ataxias, including a form of cerebral palsy. Spinocerebellar ataxia patients suffer cerebella ...

Read more here: » Cerebellum: Encyclopedia II - Cerebellum - Dysfunction

The cerebellum (Latin: "little brain") is a region of the brain that plays an important role in the integration of sensory perception and motor output. Many neural pathways link the cerebellum with the motor cortex—which sends information to the muscles causing them to move—and the spinocerebellar tract—which provides feedback on the position of the body in space (proprioception). The cerebellum integrates these two functions, using the constant feedback on body position to fine-tune motor movements. Because of this 'upda ... Including:

• Cerebellum - General features
• Cerebellum - Development and evolution
• Cerebellum - Anatomy
• Cerebellum - Divisions
• Cerebellum - Deep nuclei
• Cerebellum - Cortical layers
• Cerebellum - Peduncles
• Cerebellum - Blood supply
• Cerebellum - Dysfunction
• Cerebellum - Lesions of the cerebellum
• Cerebellum - Ischemia and thrombosis
• Cerebellum - Theories about cerebellar function
• Cerebellum - Cerebellar modeling

Read more here: » Cerebellum: Encyclopedia - Cerebellum

Angina pectoris is chest pain due to ischemia (a lack of blood and hence oxygen supply) to the heart muscle, generally due to obstruction or spasm of the coronary arteries (the heart's blood vessels). Coronary artery disease, the main cause of angina, is due to atherosclerosis of the cardiac arteries. The term derives from the Greek ankhon ("strangling") and the Latin pectus ("chest"), and can therefore be translated as "a strangling feeling in the chest". Worsening ("crescendo") angina attacks, sudden-onset angin ... Including:

• Angina - Symptoms
• Angina - Diagnosis
• Angina - Pathophysiology
• Angina - Epidemiology
• Angina - Treatment
• Angina - Unstable angina

Read more here: » Angina: Encyclopedia - Angina

Apoplexy is an old-fashioned medical term, generally used interchangeably with cerebrovascular accident (CVA or stroke) but having other meanings as well. Apoplexy - Stroke. The use of apoplexy for the term stroke is derived from the fact that many patients lose consciousness during the acute stage of the vascular compromise (either through bleeding or ischemia). It is not to be confused with cataplexy (an attack of the neurological syndrome narcolepsy). Occasionally, the term ' ... Including:

• Apoplexy - Stroke
• Apoplexy - Non-medical meaning

Read more here: » Apoplexy: Encyclopedia - Apoplexy

A stroke or cerebrovascular accident (CVA) occurs when the blood supply to a part of the brain is suddenly interrupted. In brain tissue, a reduction of blood flow, ischemia, leads to an ischemic cascade that can damage or kill brain cells. Death of brain tissue can lead to loss of the function controlled by that tissue. Thus stroke is the third leading cause of death and leading cause of adult disability in the US and industrialized European nations (Jauch, 2005), and is a medical emergency. To underscore the seriousness ... Including:

• Stroke - Types of stroke
• Stroke - Ischemic stroke
• Stroke - Hemorrhagic stroke
• Stroke - Watershed stroke
• Stroke - Rarer types of stroke
• Stroke - Causes
• Stroke - Ischemic stroke
• Stroke - Hemorrhagic stroke
• Stroke - Watershed stroke
• Stroke - Signs and symptoms
• Stroke - Diagnosis
• Stroke - Pathophysiology
• Stroke - Prevention
• Stroke - Treatment
• Stroke - Early assessment
• Stroke - Ischemic stroke
• Stroke - Hemorrhagic stroke
• Stroke - Care and rehabilitation
• Stroke - Prognosis
• Stroke - Risk factors
• Stroke - History

Read more here: » Stroke: Encyclopedia - Stroke

Amaurosis (Greek meaning darkening, dark, or obscure) is vision loss or weakness that occurs without an apparent lesion affecting the eye [1]. It may result from either a medical condition of from excess acceleration, as in flight. Amaurosis - Types. Leber's congenital amaurosis is an inherited disease resulting in severe vision loss or blindness that was first described by Theodore Leber in the 19th century. Amaurosis fugax (Greek: fugax meaning fugitive) i ... Including:

• Amaurosis - Types
• Amaurosis - Management

Read more here: » Amaurosis: Encyclopedia - Amaurosis

Bedsores, also called pressure sores or pressure ulcers, are ulcers (sores) caused by prolonged pressure or rubbing on vulnerable areas of the body, such as bony or cartilaginous areas that are prone to moisture and friction. Decubitus ulcers are pressure ulcers that occur when the patient lies on his or her back for long periods (Wilhelmi and Neumeister, 2005). Examples of areas vulnerable to pressure ulcers include the hips, ankles, heels, elbows, ears, and pressure points on the lower back (near the tail bone, ... Including:

• Bedsore - Classification
• Bedsore - Pathophysiology
• Bedsore - Epidemiology
• Bedsore - Prevention
• Bedsore - Complications
• Bedsore - Famous sufferers

Read more here: » Bedsore: Encyclopedia - Bedsore

An ulcer (from Latin ulcus) is an open sore of the skin, eyes or mucous membrane, often caused by an initial abrasion and generally maintained by an inflammation and/or an infection. Ulcer - Description. Ulcers are non-healing wounds that develop on the skin, mucous membranes or eye. Although they have many causes, they are marked by: Loss of integrity of the area Secondary infection of the site by bacteria, fungus or virus Generalized weakness of the patient A ... Including:

• Ulcer - Description
• Ulcer - Skin ulcers
• Ulcer - Merck Manual classification
• Ulcer - National Pressure Ulcer Advisory Panel NPUAP
• Ulcer - Wagner's classification
• Ulcer - Other locations
• Ulcer - Pathology of ulceration

Read more here: » Ulcer: Encyclopedia - Ulcer