title: The usefulness of transcatheter arterial embolization for patients with blunt polytrauma showing transient response to fluid resuscitation.
abstract: BACKGROUND
  This study aimed to determine whether nonsurgical management using transcatheter arterial embolization (TAE) is safe for patients with blunt multiple trauma who transiently respond to the initial fluid resuscitation.
  
  
  METHODS
  Contrast computed tomography was performed for patients with blunt abdominal injuries, excluding those who did not respond to initial fluid resuscitation. Angiography was performed for patients with injuries showing contrast extravasation or solid organ injury classified, according to the American Association for the Surgery of Trauma, as grade 3 or higher on computed tomography. Transcatheter arterial embolization was performed when angiography showed arterial extravasation. The protocol was abandoned for any patients who became profoundly hypotensive (with systolic blood pressure 60 mm Hg or lower) during computed tomography or angiography.
  
  
  RESULTS
  Between January 2000 and December 2002, 269 patients with blunt abdominal injuries underwent TAE immediately after admission. Of these patients, 41 had injuries in at least two regions and underwent TAE for these regions. Among them, 22 patients were hemodynamically stable or showed rapid response to fluid resuscitation. The nonsurgical treatment was successful in all these cases. The remaining 19 patients (Injury Severity Score, 37.3 +/- 8.2), who showed a transient response, were the subjects of this study. Of these patients, 15 underwent TAE for injuries in two regions (13 pelvic fractures, 7 splenic injuries, 6 hepatic injuries, 3 facial bleeding, and 1 renal injury), and 4 patients underwent TAE for injuries in three regions (4 had splenic injuries, 3 hepatic injuries, 2 renal injuries, 2 pelvic fractures, and 1 facial bleeding). For all these patients, TAE was successfully performed. Before TAE, the systolic blood pressure was 79.9 +/- 8.4 mm Hg, and the shock index was 1.45 +/- 0.25 mm Hg. After TAE, the corresponding values were 120.6 +/- 19.3 mm Hg and 0.87 +/- 0.16 mm Hg, respectively (p < 0.001). The rate of fluid administration required after TAE (214.2 +/- 139.3 mL/hour) was significantly less than that required before TAE (1244.2 +/- 347.1 mL/hour; range, 632-1,728 mL/hour) (p < 0.001). The deaths of two patients were classified as nonpreventable on the basis of the Trauma and Injury Severity Score (TRISS), and their respective probabilities of survival were determined to be 0.13 and 0.03.
  
  
  CONCLUSIONS
  Nonsurgical management using TAE can be performed safely even for patients with blunt multiple trauma who are in hemorrhagic hypotension if their hemodynamics are improved by resuscitation with 2 L of fluid.
authors.affiliation: Department of Traumatology and Critical Care Medicine, School of Medicine, Kyorin University, Tokyo, Japan. hagiwarapupu@jcom.home.ne.jp
authors.forename: Akiyoshi
authors.initials: A
authors.lastname: Hagiwara
authors.forename: Atsuo
authors.initials: A
authors.lastname: Murata
authors.forename: Takeaki
authors.initials: T
authors.lastname: Matsuda
authors.forename: Hiroharu
authors.initials: H
authors.lastname: Matsuda
authors.forename: Shuji
authors.initials: S
authors.lastname: Shimazaki
mesh_terms: D000007:Abdominal Injuries / Q000150:complications* / Q000175:diagnosis; D000293:Adolescent; D000328:Adult; D000368:Aged; D000792:Angiography / Q000592:standards; D001158:Arteries / Q000293:injuries*; D002648:Child; D004621:Embolization, Therapeutic / Q000295:instrumentation / Q000379:methods*; D005119:Extravasation of Diagnostic and Therapeutic Materials / Q000209:etiology; D005260:Female; D005440:Fluid Therapy / Q000379:methods*; D005500:Follow-Up Studies; D006470:Hemorrhage / Q000209:etiology / Q000517:prevention & control*; D006801:Humans; D007022:Hypotension / Q000209:etiology / Q000517:prevention & control; D015601:Injury Severity Score; D008297:Male; D008875:Middle Aged; D009104:Multiple Trauma / Q000150:complications* / Q000175:diagnosis; D018579:Patient Selection; D012449:Safety; D012680:Sensitivity and Specificity; D016019:Survival Analysis; D014057:Tomography, X-Ray Computed / Q000592:standards; D016896:Treatment Outcome; D014949:Wounds, Nonpenetrating / Q000150:complications* / Q000175:diagnosis