Instructions: Given an abstract, indicate which of the provided candidate titles (Option1 and Option2) best describes it (respond with the text of the title, not option1/2).
Input: Abstract: Vascular injuries of the lower limb in the presence of extensive soft tissue loss, fractures, or other life-threatening injuries are associated with a high amputation rate. Five patients underwent temporary intravascular shunting during the period of treatment of such injuries. Rapid reperfusion of the limb via such shunts permitted more comprehensive evaluation and management of the lower limb and other associated injuries than would have been possible in the presence of prolonged ischemia. 
 Which is the apt title for the abstract? option1: Intravascular shunts in complex lower limb trauma. option2: Behavior abnormalities and poor school performance due to oral theophylline use.
Output:
Intravascular shunts in complex lower limb trauma.