JOURNAL ARTICLE
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Impact of mobile angiography in the emergency department for controlling pelvic fracture hemorrhage with hemodynamic instability.

Journal of Trauma 2010 January
OBJECTIVE: Rapid trauma evaluation and intervention without time delay are considered integral to time-efficient management of trauma patients, particularly for those with hemodynamic instability. This study examined the impact of immediate availability of mobile angiography with digital subtraction angiography technology in the emergency department (ED) for hemodynamically unstable multiple trauma patients with pelvic injury.

MATERIALS: This retrospective review examined a cohort of all blunt trauma patients with pelvic injury who underwent transcatheter arterial embolization (TAE) using mobile angiography by trauma surgeons in the ED. This system was set up on a 24-hour basis with full-time trauma surgeons available in-hospital. Data collected included clinical characteristics, injury severity, resuscitation intervals from admission through to completion of hemostasis, metabolic factors (pH and core body temperature), mortality, and TAE-related complications.

RESULTS: Subjects comprised 29 patients (hemodynamically stable group, n = 17; hemodynamically unstable group, n = 12) with a median age of 36 years (interquartile range [IQR], 29-53 years). Mean shock index, injury severity score, and trauma and injury severity score were 1.1 +/- 0.5, 32 +/- 12, and 0.79 +/- 0.27, respectively. Median intervals from ED arrival to diagnosis and from diagnosis to starting TAE were 66 minutes (IQR, 42-80 minutes) and 30 minutes (IQR, 25-37 minutes), respectively. Median interval from diagnosis to completion of TAE was 107 minutes (IQR, 93-130 minutes). Physical and anatomic injury statuses were more severe in the hemodynamically unstable group than in the hemodynamically stable group. However, intervals from diagnosis to starting TAE and from diagnosis to completion of hemostasis did not differ significantly between groups. No exacerbations of metabolic factors during resuscitation were identified. Pelvic injury related mortality was 17% and no TAE-related complications were encountered.

CONCLUSION: Immediate availability of mobile angiography in the ED seems safe and effective for hemodynamically unstable trauma patients with pelvic injury and results in a rapid improvement in resuscitation intervals without leaving the ED. An adequately randomized controlled trial of mobile angiography in this subset of patients, who would seem to derive the most benefit from mobile angiography, would be ideal.

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