- published: 11 Feb 2016
- views: 16696
Ischemia, also spelled as ischaemia or ischæmia (/ɪˈskiːmiə/), is a restriction in blood supply to tissues, causing a shortage of oxygen and glucose needed for cellular metabolism (to keep tissue alive). Ischemia is generally caused by problems with blood vessels, with resultant damage to or dysfunction of tissue. It also means local anemia in a given part of a body sometimes resulting from congestion (such as vasoconstriction, thrombosis or embolism). Ischemia comprises not only insufficiency of oxygen, but also reduced availability of nutrients and inadequate removal of metabolites.
Since oxygen is carried to tissues in the blood, insufficient blood supply causes tissue to become starved of oxygen. In the highly aerobic tissues of the heart and brain, irreversible damage to tissues can occur in as little as 3–4 minutes at body temperature. The kidneys are also quickly damaged by loss of blood flow. Tissues with slower metabolic rates may undergo irreversible damage after 20 minutes.
What is ischemia? When cells don't receive enough oxygen, they can become ischemic, and ultimately die, leading to tissue necrosis. Subscribe - https://goo.gl/w5aaaV. More videos - https://goo.gl/UhOKiM. Support us on Patreon - https://goo.gl/ZGHEk4. This video covers the pathophysiology of both reversible and irreversible ischemia, as well as the difference between perfusion and blood flow. Subscribe - http://www.youtube.com/channel/UCNI0qOojpkhsUtaQ4_2NUhQ?sub_confirmation=1 This video is brought to you by Osmosis. Along with providing open-access videos, Osmosis offers a comprehensive e-learning platform that connects med students with thousands of flashcards and quiz questions, depending on each student's needs. Ever wish information would just diffuse into your brain? Well, Osmosis...
What is the difference between ischemia and infarction? Find out here!
Effects of myocardial ischemia on the 12-lead ECG.
Clarifying a bunch of medical terms around heart disease More free lessons at: http://www.khanacademy.org/video?v=3858MaULDdI
A brief discussion on "Ischemia Reperfusion Injury" . Topics included: -What is Ischemia ? -How Ischemia Causes Injury ? -Role of Electron Transport Chain -Proton Gradient & F0F1 ATP Synthase -Outcomes of Ischemia -Outcomes of Reperfusing An Ischemic Tissue -Definition of Reperfusion Injury -How Reperfusion Injury Occurs -Mechanisms -Reperfusion Injury by New Damage -Reperfusion Injury by Mitochondrial Permeability Transition -Reperfusion Injury during Inflammation -Reperfusion Injury by complements -Graft Failure due to Ischemia Reperfusion Injury If you like this video do comment and let me know ! Hope it is helpful. Take care. - Dr. Rabiul
Cos’è un’ischemia cerebrale e quanto è rischiosa? Il video spiega come si riconosce e come viene trattata. ****** NOTE SUI COMMENTI: non potendo monitorare costantemente gli interventi degli utenti e garantire una risposta ad ognuno di essi, abbiamo scelto di disabilitare i commenti. Infatti, per esperienza, i commenti non moderati diventano in molti casi un mezzo di diffusione di false informazioni e messaggi con finalità commerciali. Non vogliamo che i nostri video si prestino a tale scopo. Per critiche, apprezzamenti, domande e osservazioni potete comunque scrivere nel nostro forum http://community.my-personaltrainer.it/ o cercare informazioni negli articoli dedicati presenti sul sito www.my-personaltrainer.it ****** Ischemia cerebrale Ischemia cerebrale Guarda il Video - Ischemia...
L'ischemia cerebrale è caratterizzata dall'interruzione del flusso sanguigno di una arteria che irrora il cervello. Il mancato apporto del nutrimento sanguigno determina una lesione cerebrale. Tra gli effetti caratteristici dell'ischemia cerebrale troviamo l'emiplegia e l'alterazione dei processi cognitivi quali attenzione memoria, percezione ed apprendimento.
http://www.birthinjuryjustice.org Brain ischemia is the medical term for lack of blood flow to the brain. Blood carries oxygen and nutrients to the brain, and when the brain is deprived of blood, it is deprived of oxygen. When brain cells go too long without oxygen, they begin to die off, which can cause irreversible damage.
This animation examines some of the cellular processes involved in myocardial ischemia.
In collegamento dall'ospedale di Modena dove è ancora in cura, Vittorio Sgarbi racconta la propria operazione al cuore in seguito ad una ischemia cardiaca
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