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Aspirin is non-selective and irreversibly inhibits both forms [4] (but is weakly more selective for COX-1 [5]). It does so by acetylating the hydroxyl of a serine residue at the 530 amino acid position. [6] Normally COX produces prostaglandins, most of which are pro-inflammatory, and thromboxanes, which promote clotting.
[1] [4] Complications can include swelling of the brain or lungs, seizures, low blood sugar, or cardiac arrest. [1] While usually due to aspirin, other possible causes include oil of wintergreen and bismuth subsalicylate. [2] Excess doses can be either on purpose or accidental. [1] Small amounts of oil of wintergreen can be toxic. [2]
Aspirin can induce swelling of skin tissues in some people. In one study, angioedema appeared one to six hours after ingesting aspirin in some of the people. However, when the aspirin was taken alone, it did not cause angioedema in these people; the aspirin had been taken in combination with another NSAID-induced drug when angioedema appeared ...
The cause of Reye syndrome is unknown. [2] It usually begins shortly after recovery from a viral infection, such as influenza or chickenpox. [1] About 90% of cases in children are associated with aspirin use. [2] Inborn errors of metabolism are also a risk factor. [3] The association with aspirin has been shown through epidemiological studies.
Aspirin helps prevent blood clots from forming, which is the leading cause of heart attack and stroke, but the drug also carries a risk of bleeding. That risk can outweigh aspirin’s benefits in ...
The cause of serotonin toxicity or accumulation is an important factor in determining the course of treatment. Serotonin is catabolized by monoamine oxidase A in the presence of oxygen , so if care is taken to prevent an unsafe spike in body temperature or metabolic acidosis, oxygenation will assist in dispatching the excess serotonin.
The prototype for these drugs is aspirin, which inhibits the production of thromboxane. NSAIDs (for example Ibuprofen) inhibit the activation of platelets, and thereby increase the risk of bleeding. The effect of aspirin is irreversible; therefore, the inhibitory effect of aspirin is present until the platelets have been replaced (about ten days).
As a type of hematoma, a bruise is always caused by internal bleeding into the interstitial tissues which does not break through the skin, usually initiated by blunt trauma, which causes damage through physical compression and deceleration forces. Trauma sufficient to cause bruising can occur from a wide variety of situations including ...