New details have emerged from the desperate effort to save Hayden Panettiere after the actor was found unresponsive. Emergency dispatch audio suggests the star was in cardiac arrest when first responders arrived at her South Carolina home. Key points and original sources are listed below.

• New details have emerged from the desperate effort to save Hayden Panettiere after the actor was found unresponsive.S1

• Emergency dispatch audio suggests the star was in cardiac arrest when first responders arrived at her South Carolina home.S2S3