I’m really having a heart attack, first aid tutor tells class

 A first aider talked one of his church group trainees through saving his life after he suffered a cardiac arrest during a class on how to deliver CPR.

David Knowles, a retired nurse, was delivering a talk about his work with the St John Ambulance when he found himself at the centre of a real-life emergency.

The group thought the 77-year-old was role-playing, before realising the severity of the situation as he began to lose consciousness.

A woman in the audience went to help Mr Knowles, who told her exactly what to do to save his life before he passed out.

She gave the St John Ambulance trainer CPR until an ambulance arrived at the Belmont Chapel church group in Exeter, Devon.

Mr Knowles was taken to the nearby Royal Devon and Exeter Hospital, where he suffered a further cardiac arrest and a pulmonary embolism. But his condition improved after having three stents fitted to open his arteries, along with an internal defibrillator implanted in his chest.

Mr Knowles spent five weeks in hospital and is now recovering.