My husband suffered a heart attack followed by cardiac arrest on 16 July. We were lucky and got prompt attention from passersby and ambulance who shocked and ventilated him. He has a stent fitted spent time in a coma at Kings and is now home having also been diagnosed with diabetes. He has been walking for about 10-14 minutes a day and is fine on the flat. Yesterday when he tried to come down the stairs his legs went into a major spasm and he collapsed on the floor, other than the spasm he was fine. He is now effectively trapped upstairs. Has anyone else had any symptoms like this? Do I need to get hi. Back into hospital, he is adamant no ambulances.