Korábbi vizsgálatok eredményei alapján az érfali tágulékonyság paraméterei összefüggést mutatnak a cardiovascularis mortalitással hemodializált betegekben. A különböző paraméterek relatív prognosztikus értékét ugyanakkor egy közös kohorszban eddig nem vizsgálták. Módszer: Dialízis előtt és után 98 betegnél mértük a carotis-femoralis pulzushullám terjedési sebességét, a carotis augmentációs indexét, a carotis pulzusnyomását és a carotis-brachialis pulzusnyomás amplifikációját. A betegeket 29 hónapig (medián) (tartomány 1–35) követtük, majd a cardiovascularis mortalitás és a kiinduláskor mért tágulékonysági paraméterek közötti összefüggést vizsgáltuk log-rank tesztek, illetve a korhoz, diabeteshez és korábban meglévő cardiovascularis megbetegedéshez illesztett Cox-féle regressziós modellek alkalmazásával. Eredmények: A követés alatt 40 beteg halt meg (mortalitási ráta 20,7/100 betegév), köztük 25-en cardiovascularis ok következtében. A dialízis előtt és után mért pulzushullám-terjedési sebességet tercilisei, illetve a dialízis előtt mért pulzusnyomás-amplifikáció tercilise szignifikáns összefüggést mutattak a cardiovascularis mortalitással (log-rank p-értékek 0,012 és 0,011 a pre- és posztdialízis pulzushullám-terjedési sebesség, illetve <0,001 és 0,321 a pre- és posztdialízis pulzusnyomás-amplifikáció esetén). Az augmentációs indexek, illetve a carotispulzusnyomás-értékek nem álltak összefüggésben a cardiovascularis mortalitással. Cox-modellben az 1 m/s-mal gyorsabb pre- és posztdialízis pulzushullám-terjedési sebességéhez tartozó relatív rizikó 1,24 (1,07–1,44) és 1,17 (1,06–1,28) volt. 10%-kal kisebb predialízispulzusnyomás-amplifikációval járó rizikónövekedés 41% (3–92%) volt. Egy közös modellben vizsgálva mind a predialízispulzushullám-terjedési sebesség, mind a pulzusnyomás-amplifikáció szignifikáns összefüggést mutatott a cardiovascularis túléléssel [relatív rizikó: 1,23 (1,07–1,42) és 1,39 (1,02–1,89)]. Következtetés: Hemodializált betegekben az érfali tágulékonyságot leíró különböző paraméterek közül a pulzushullám-terjedési sebesség a mérés idejétől független, konzekvens összefüggést mutat a cardiovascularis mortalitással. Ugyanakkor a predialízispulzusnyomás-amplifikációs érték további prognosztikus információt hordoz.
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