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.
Prison Break: The Final Break. The Main Cast of Season 4. Season Four of Prison Break is the fourth season of the show, consisting of 22 episodes that aired from 2008 to 2009, with a follow-up TV movie: Prison Break: The Final Break. Sarah Wayne Callies returns as Sara Tancredi, who was previously thought to be dead.