But far greater improvements were seen in the group who had undergone revascularisation.
BBC: 'Operations are best' for older hearts
2.
They were randomly assigned to be given either medication or revascularisation.
BBC: 'Operations are best' for older hearts
3.
But researchers said half of those deaths had occurred in patients who had been allocated to the invasive procedure group but were unsuitable for revascularisation or unwilling to have it.