A shortage of defibrillators - which shock the heart - and a lack of public awareness could be costing thousands of lives every year, research suggests.
Experts found that fewer than 2% of heart attack victims in one county in England were treated with the device before an ambulance arrived - a figure described as "disappointingly low".
The British Heart Foundation (BMF) estimates that 60,000 heart attacks occur out of hospital every year across the UK.
More top news
Actor Bill Murray has offered to pay for the mobile phones of two fans he allegedly threw from bar after they tried to take photos of him.
Inadequate pain medication means cancer patients who want to die at home have no choice but to go to hospital, charity says.
Nearly three quarters do not get paid for the extra work they do, including teaching lessons, according to survey.