Author/Editor		Jereb, Janez
Title		Vloga Dopplerjevega ultrazvoka v diagnostiki portalne hipertenzije
Type		članek
Source		Gastroenterolog
Vol. and No.		Letnik 8, št. 1-2
Publication year		2004
Volume		str. 36-41
Language		slo
Abstract		Any obstruction or increased resistance to flow or, rarely, pathological increases in portal blood flow may lead to portal hypertension with portal pressures over 15 mm Hg. Increases in portal pressure cause development of a portosystemic collateral circulation with resultant compensatory portosystemic shunting and disturbed intrahepatic circulation. Patients with suspected portal hypertension must first be evaluated by ultrasonography with Doppler. The role of transjugular intrahepatic portosystemic shunt (TIPS) in the management of complications of portal hypertension is well established. However, TIPS has a limited patency due to dysfunction consisting in occlusion or stenosis. Doppler ultrasound has been the most commonly used noninvasive tool in TIPS patency.
Summary		Vsaka obstrukcija ali povečan odpor proti toku krvi ali redkeje patološko povečanje portalnega pretoka lahko privede do portalne hipertenzije s portalnim tlakom preko 15 mm Hg. Povečanje portalnega tlaka povzroči nastanek portosistemske kolateralne cirkulacije, ki kompenzatorno vodi do portosistemskih obvodov in motenega intrahepatalnega pretoka. Bolniki, pri katerih sumimo na portalno hipertenzijo, morajo biti najprej ultrazvočno pregledani vključno z dopplersko analizo. V terapiji komplikacij portalne hipertenzije je dobro raziskana vloga transjugularnega portosistemskega šanta (TIPS). Zaradi nastanka popolne zapore ali stenoze je TIPS lahko omejeno prehoden. Dopplerski ultrazvok je najbolj uporabna neinvazivna preiskava za ugotavljanje prehodnosti TIPS.
Descriptors		HYPERTENSION, PORTAL PORTAL VEIN THROMBOSIS HEPATIC VEIN THROMBOSIS ULTRASONOGRAPHY, DOPPLER PORTASYSTEMIC SHUNT, SURGICAL PORTASYSTEMIC SHUNT, TRANSJUGULAR INTRAHEPATIC