J Trauma
-
Case Reports
Posterior fracture-dislocation of the shoulder with infraspinatus interposition: the buttonhole phenomenon.
We present a case with a posterior fracture-dislocation in which interposition of the infraspinatus precluded closed reduction by means of standard manipulation. The fractured greater tuberosity included the lesser tuberosity, allowing the infraspinatus to dislocate anterior to the dislocated humeral head and interpose between the humeral head and the glenoid cavity. ⋯ Traction in the zero-position was thus required for resolution of constriction and subsequent reduction. Computed tomography was useful to demonstrate interposition of the infraspinatus and to plan the treatment.
-
As nonoperative management of blunt abdominal trauma has become more popular, reliable models for predicting the likelihood of concomitant hollow viscus injury in the hemodynamically stable patient with a solid viscus injury are increasingly important. ⋯ A model of organ injury scaling predicted hollow viscus injury. Multiple solid viscus injuries, particularly pancreatic, or abdominal solid viscus injuries with an AIS score > or = 6, were predictive of hollow viscus injury. Identification of these injury patterns should prompt consideration for early operative intervention.
-
Case Reports
Aortoventricular fistula secondary to blunt trauma: a case report and review of the literature.
An aorto-right ventricular fistula secondary to nonpenetrating trauma is described. Review of the literature is reported. ⋯ Blunt cardiac injury is a frequent concomitant injury and contributes to the high mortality of this lesion. Prompt surgical intervention is required for survival.
-
The purpose of this study was to determine how chronic cocaine exposure affects the hemodynamic response to epinephrine, dopamine, phenylephrine, and ephedrine in awake sheep. ⋯ In awake sheep, chronic cocaine exposure markedly impairs the hemodynamic response to dopamine but not to epinephrine, phenylephrine, or ephedrine.
-
Bomb blast survivors are occasionally found in profound shock and hypoxic without external signs of injury. We investigated the cardiovascular and pulmonary responses of rats subjected to a blast pressure wave. ⋯ Blast-induced circulatory shock resulted from immediate myocardial depression without a compensatory vasoconstriction. Hypoxia presumably resulted from a ventilation-perfusion mismatch caused by pulmonary hemorrhage.