Biology Questions and Answers
Since hemophilic patients need frequent
transfusions of IX) they are more susceptiblclotting factors (VIe to II or
contamination by infectious agents
present in the blood from which transfused elements come. In the pastthe (^)
the blood banks did not usually perform
HIV detection tests and manyhemophilic patients have become (^)
infected with the virus.
- What are anticoagulants?
What are the practical
applications of anticoagulants,
like heparin, in Medicine?
Anticoagblock the clottingulants are substances reactions and thus that (^)
stop the coagulation there are anticoagulants circulating inprocess. Ordinarily
the plasma since under normal
conditions the blood must be kept fluid.
In Medicine anticoagulants like heparin
are used in surgeries in which tissueinjuries made by the surgical act could (^)
trigger undesirable systemicclotting. They are also used to avoi blood (^) d the
formation of thrombus inside blood
vessels of patientsthrombotic risk. facing increased
- What is dicoumarol? How
does this substance act in the
clotting process and what are
some examples of its toxicity?
Dicoumarol is an Due to its molecular structureanticoagulant d rug.
dicoumarol competes with vitamin K for
the binding to substrates blocking the
formation of clotting factors and
interrupting tDicoumarol is fohe makinund in some vg of prothromegetablesbin.
undergoing decomposition, and it cancause severe internal hwhen those vegetables are accideemorrhagesntally (^)
ingested. Coumarinic anticoagulants
cannot be administerepregnancy since they pass the placentald during (^)
barrier and can cause fetal
hemorrhages.
- Streptokinase is a
substance used in the
treatment of acute myocardial
infarction. How does this
substance act?
Substances known as fibrinolytics, like
streptokinase andestroy thrombi (clotsd urokinase, formed insidecan (^)
blood vessels, capillaries or within the
heart chamtreatment of obstructions obers) and are used in thef the
coronary arteries or other blood vessels.
Streptokinase dnetwork and so it dissolvesestroys the thefibrin
thrombotic clot.the bacteria that produce it, the Its name comes after
streptococci.
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