Avoiding Large Blood Vessels during Paracentesis on POCUS Once you find fluid and before you sample, u/s can also help detect large and tortuous vessels in the abdominal wall. Whether portal hypertension or intra-abdominal/ retro-peritoneal mass, these vessels can lead to fatal hemorrhage if lacerated. - Alberta Sono @UAlberta_Sono #BloodVessels #Paracentesis #POCUS #abdominal #clinical #ultrasound #color #doppler