title: Utility of Intravascular US-Guided Portal Vein Access during Transjugular Intrahepatic Portosystemic Shunt Creation: Retrospective Comparison with Conventional Technique in 109 Patients.
abstract: OBJECTIVE
  To compare safety and effectiveness of intravascular ultrasound (US)-guided portal vein access during transjugular intrahepatic portosystemic shunt (TIPS) creation with conventional TIPS technique.
  
  
  METHODS
  In this retrospective study, TIPS creation using intravascular US guidance in 55 patients was compared with conventional TIPS creation in 54 patients by 10 operators over a 3-year period. Operators were classified as experienced if they had performed ≥ 20 TIPS procedures at the beginning of the study period. Time to portal vein access, total radiation dose, and needle pass-related capsular perforation were recorded.
  
  
  RESULTS
  Baseline demographic characteristics of patients were similar (P > .05). Mean time to portal venous access was 46 minutes ± 37 for conventional TIPS and 31 minutes ± 19 for intravascular US-guided TIPS (P = .007). Intravascular US guidance allowed significantly shorter times (48 min ± 30 vs 28 min ± 16; P = .01) to portal vein access among operators (n = 5) with limited experience but failed to achieve any significant time savings (44 min ± 43 vs 34 min ± 22; P = .89) among experienced operators (n = 5). Needle pass-related capsular perforation occurred in 17/54 (34%) patients with conventional TIPS and 5/55 (9%) patients with intravascular US-guided TIPS (P = .004). Radiation dose was 2,376 mGy ± 1,816 for conventional TIPS and 1,592 mGy ± 1,263 for intravascular US-guided TIPS (P = .004).
  
  
  CONCLUSIONS
  Intravascular US-guided portal vein access during TIPS creation is associated with shorter portal vein access times, decreased needle pass-related capsular perforations, and reduced radiation dose.
authors.affiliation: Department of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390. Electronic address: anil.pillai@utsouthwestern.edu.
authors.forename: Anil K
authors.initials: AK
authors.lastname: Pillai
authors.affiliation: Department of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390.
authors.forename: Brice
authors.initials: B
authors.lastname: Andring
authors.affiliation: Department of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390.
authors.forename: Nicholas
authors.initials: N
authors.lastname: Faulconer
authors.affiliation: Department of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390.
authors.forename: Stephen P
authors.initials: SP
authors.lastname: Reis
authors.affiliation: Department of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390.
authors.forename: Yin
authors.initials: Y
authors.lastname: Xi
authors.affiliation: Department of Radiology, Emory University School of Medicine, Atlanta, Georgia.
authors.forename: Ikponmwosa
authors.initials: I
authors.lastname: Iyamu
authors.affiliation: Department of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390.
authors.forename: Patrick D
authors.initials: PD
authors.lastname: Suthpin
authors.affiliation: Department of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390.
authors.forename: Sanjeeva P
authors.initials: SP
authors.lastname: Kalva
mesh_terms: D003287:Contrast Media / Q000008:administration & dosage; D005260:Female; D005471:Fluoroscopy; D006801:Humans; D006975:Hypertension, Portal / Q000000981:diagnostic imaging / Q000209:etiology / Q000503:physiopathology / Q000601:surgery*; D008103:Liver Cirrhosis / Q000150:complications / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D009339:Needles; D061646:Operative Time; D017082:Portal Pressure; D011169:Portal Vein / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D019168:Portasystemic Shunt, Transjugular Intrahepatic / Q000009:adverse effects / Q000295:instrumentation; D011677:Punctures; D011829:Radiation Dosage; D000069079:Radiation Exposure; D015641:Radiography, Interventional / Q000009:adverse effects / Q000379:methods; D012189:Retrospective Studies; D013997:Time Factors; D016896:Treatment Outcome; D018084:Ultrasonography, Interventional / Q000009:adverse effects
chemical_list: D003287:Contrast Media