cing ▁de h yd r ation ▁induced ▁R V T , ▁may ▁experience ▁de h yd r ation ▁sympt oms ▁( d ry ▁mouth , ▁low ▁ur ine ▁output , ▁loss ▁of ▁skin ▁t urg id ity ) ▁as ▁while ▁as ▁vom iting , ▁n ause a ▁and ▁fe ver , ▁and ▁the ▁usual ▁R V T ▁sympt oms ▁like ▁fl ank ▁pain , ▁blood ▁in ▁the ▁ur ine , ▁an a emia , ▁ed ema , ▁en larg ed ▁kid ne ys ▁and ▁kid ney ▁failure . ▁ ▁Mechan ism ▁The ▁mechanism ▁behind ▁R V T ▁is ▁no ▁different ▁from ▁other ▁types ▁of ▁blood ▁cl ots ▁in ▁other ▁parts ▁of ▁the ▁body . ▁ ▁Rudolf ▁Vir ch ow , ▁was ▁the ▁first ▁to ▁describe ▁the ▁phys i ological ▁mechanism ▁behind ▁ven ous ▁th rom b osis ▁( blo od ▁cl ots ) ▁using ▁three ▁related ▁factors , ▁known ▁as ▁Vir ch ow ' s ▁Tri ad ; ▁damage ▁to ▁the ▁blood ▁vessel ▁( end oth el ial ▁damage ), ▁decrease ▁in ▁blood ▁flow ▁( st asis ) ▁and ▁increased ▁co ag ul ability ▁of ▁the ▁blood ▁( th rom b oph ilia ▁or ▁hyper co ag ul ability ). ▁it ▁is ▁possible ▁for ▁one ▁of ▁these ▁factors ▁alone ▁to ▁cause ▁a ▁blood ▁cl ot , ▁but ▁in ▁most ▁cases , ▁a ▁combination ▁or ▁all ▁of ▁these ▁factors ▁indu ce ▁the ▁formation ▁of ▁a ▁blood ▁cl ot . ▁Dec re ased ▁ur ine ▁output ▁or ▁kid ney ▁function ▁may ▁be ▁the ▁only ▁observable