IZZIE FACES THE REALITIES OF HER MEDICAL CONDITION AND OWEN AND CRISTINA ENDURE ANOTHER PTSD EPISODE, ON ABC'S "GREY'S ANATOMY"

"Elevator Love Letter" � Tensions are running high at Seattle Grace with all eyes on Derek as he is set to perform his first surgery after his breakdown; attention is also set on Izzie, whose medical condition requires her to undergo a difficult surgery; and Owen has another PTSD episode that injures Cristina and traumatizes both of them, throwing the future of their relationship into question, on "Grey's Anatomy," THURSDAY, APRIL 23 (8:00-9:00 p.m., ET) on the ABC Television Network. (Rebroadcast. OAD: 3/26/09)

Note: This program replaces the episodes of "In the Motherhood" and "Samantha Who?" that had been scheduled.

"Grey's Anatomy" stars Ellen Pompeo as Meredith Grey, Patrick Dempsey as Derek Shepherd, Sandra Oh as Cristina Yang, Katherine Heigl as Isobel "Izzie" Stevens, Justin Chambers as Alex Karev, T.R. Knight as George O'Malley, Chandra Wilson as Miranda Bailey, James Pickens, Jr. as Richard Webber, Sara Ramirez as Callie Torres, Eric Dane as Mark Sloan, Chyler Leigh as Lexie Grey and Kevin McKidd as Owen Hunt.

Guest starring Jessica Capshaw as Dr. Arizona Robbins, Kimberly Elise as Dr. Swender.

"Elevator Love Letter" was written by Stacy McKee and directed by Ed Ornelas.

"Grey's Anatomy" is broadcast in 720 Progressive (720P), ABC's selected HDTV format, with 5.1-channel surround sound and Spanish audio via SAP. This program carries a TV-14,S.V parental guideline.

This episode of "Grey's Anatomy" will be available on ABC.com the day after airing on the network for users to watch online.