title: Evaluation of blood flow by color Doppler sonography in free jejunal interposition grafts for cervical esophageal reconstruction.
abstract: The failure of the vascular anastmoses is a devastating complication in free jejunum transplantation. We used color Doppler sonography to estimate blood flow in free jejunal grafts in 21 patients who underwent radical pharyngoesophagectomy. Fast Fourier transform (FFT) analysis of blood flow, the pulsatility index (PI) as a measure of peripheral vascular resistance, and thickening of the graft wall were evaluated for predictive value. The arterial wave patterns were classified into three types based on systolic-diastolic differences and magnitude of flow. Type I was physiologic flow, type III overtly pathologic, and type II intermediate. The three patients who required vascular reanastomoses intraoperatively had a type II pattern that degenerated to type III within 15 minutes. The PI increased to 3.5 to 4.5 over 1 hour. In the one patient who required retransplantation, the wave pattern became type III by 18 hours and had disappeared by 24 hours, at which point the PI could not be measured. Jejunal thickening increased from 1.0 mm to 5.0 mm after 24 hours, even in healthy grafts. Monitoring blood flow during the 24 hours after surgery is critical. A type III wave pattern or a PI >2.5 is an indication for reexploration. Doppler sonography offers a noninvasive way to measure blood flow in jejunal grafts semiquantitatively and can predict free jejunal graft failure.
authors.affiliation: Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka City University, 1-4-3, Asahimachi Abeno-ku, 545-8585, Osaka, Japan. uenoman@gaia.eonet.ne.jp
authors.forename: Masakatsu
authors.initials: M
authors.lastname: Ueno
authors.forename: Harushi
authors.initials: H
authors.lastname: Osugi
authors.forename: Shigefumi
authors.initials: S
authors.lastname: Suehiro
authors.forename: Yoshihiko
authors.initials: Y
authors.lastname: Nishimura
authors.forename: Nobuyasu
authors.initials: N
authors.lastname: Takada
authors.forename: Masashi
authors.initials: M
authors.lastname: Takemura
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Kinoshita
mesh_terms: D000368:Aged; D000714:Anastomosis, Surgical; D001783:Blood Flow Velocity; D004938:Esophageal Neoplasms / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D016629:Esophagectomy; D005260:Female; D006085:Graft Survival; D006801:Humans; D007583:Jejunum / Q000098:blood supply* / Q000000981:diagnostic imaging / Q000637:transplantation*; D008297:Male; D008875:Middle Aged; D010611:Pharyngectomy; D012039:Regional Blood Flow; D018615:Ultrasonography, Doppler, Color