In a UK survey of 8,000 heart-attack resuscitations, only 2.8% of patients were still alive 30 days later due to low blood flow to the arteries and brain. The HemaShock device from Israel’s Oneg Hakarmel (developer of HemaClear – see here) takes blood from the limbs to maintain essential organs.
https://www.jpost.com/Israel-News/Israeli-medical-device-aims-to-boost-CPR-survival-rates-576503