The most common causes for a weak or absent pulse are cardiac arrest and shock. Cardiac arrest occurs when someoneâs heart stops beating. Shock happens when someoneâs body begins to shut down. This causes a weak pulse, rapid heartbeat, shallow breathing, and unconsciousness.
She appeared in Prison Break in 2006 as Nika Volek, a role which she continued to portray in the show's second season. Also in 2006, Valance appeared in the National Lampoon comedy Pledge This!, alongside American socialite Paris Hilton.
So, as Team Arrow set out to thwart Damien Darhkâs Malcolm Merlyn-assisted prison break, it was Laurel Lance aka Black Canary â played by original cast member Katie Cassidy â who found herself on the business end of an arrow, with Darhk twisting it into her gut for good measure.