911 Call Details Hayden Panettiere's Final Moments Before Death

• Zach Hickerson, brother of Hayden Panettiere's boyfriend, made a 911 call on August 16.
• He attempted CPR on Panettiere after finding her unconscious in a South Carolina apartment.
• The seven-minute call was obtained by ABC News and CBS News.
• Panettiere was declared dead after the emergency services' efforts.
• The call captures the desperate attempts to revive her.