2013년 10월 23일 수요일

Ilona Warf's blog ::What Causes Cancer






Ilona Warf's blog ::What Causes Cancer










Have               you               been               told               that               you               have               a               low               platelet               count?

If               this               was               found               on               a               blood               test,               you're               understandably               concerned               as               to               why.

The               medical               term               for               a               low               platelet               count               is               thrombocytopenia.

This               means               you               have               less               than               150,000               platelets               per               microliter               of               blood.

Why               is               this               a               problem?

When               the               platelet               counts               drop,               it               increases               the               risk               of               bleeding               from               the               nose               and               gums,               and               bruises               can               form               more               easily.

The               most               serious               risk               is               that               the               platelet               count               can               fall               so               low               that               internal               bleeding               occurs.

Fortunately,               platelet               counts               usually               have               to               drop               pretty               low               (below               10,000               platelets               per               microliter)               for               this               to               happen.

What               causes               a               low               platelet               count?

One               cause               of               a               low               platelet               count               is               decreased               platelet               production               by               the               bone               marrow.

A               number               of               conditions               can               cause               the               bone               marrow               to               stop               producing               enough               platelets.

Certain               types               of               cancers               such               as               leukemia               or               cancers               involving               the               lymph               system               can               do               it.

More               commonly,               a               viral               infection               can               interfere               with               platelet               production               by               the               bone               marrow.

Some               medications,               vitamins               deficiencies               (B12               and               folate),               and               even               excessive               alcohol               intake               can               temporarily               suppress               the               bone               marrow               causing               a               low               platelet               count.

In               rare               cases,               it               can               be               due               to               a               genetic               condition               or               associated               with               kidney               failure.
               In               some               cases,               normal               amounts               of               platelets               are               made               by               the               bone               marrow,               but               they're               removed               too               quickly               from               the               blood               stream.

Some               viruses               and               drugs               can               cause               this,               although               another               cause               is               an               autoimmune               disease               where               antibodies               are               produced               against               platelets,               causing               them               to               be               destroyed               prematurely.

There's               also               a               condition               known               as               ITP               (idiopathic               thrombocytopenia               purpura)               where               the               immune               system               produces               antibodies               against               its               own               platelets               causing               them               to               be               destroyed.
               In               rare               cases,               an               overwhelming               infection,               illness,               or               pregnancy               will               cause               the               blood               clotting               mechanism               to               be               inappropriately               turned               on               -               a               condition               known               as               DIC.

This               is               associated               with               the               formation               of               small               clots               throughout               the               body.

This               causes               the               platelets               to               be               used               up               and               the               platelet               count               to               drop.

With               this               condition,               a               person               is               usually               quite               ill.
               Sometimes               a               low               platelet               count               can               be               due               to               laboratory               error               such               as               clot               in               the               sample.

Repeating               the               platelet               count               will               usually               reveal               the               error.
               The               bottom               line?

If               you               have               a               low               platelet               count               is               found               on               a               lab               exam,               it's               important               to               follow               up               with               a               doctor               and               find               out               why.

Sometimes               simply               repeating               the               blood               count               will               reveal               that               the               sample               was               simply               clotted.

If               not,               further               studies               may               be               needed.
               References:
               American               Family               Physician.

Feb;               vol               53               (issue               3),               pp               915-20




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