Theo’s chest as I start pumping. I’m out of breath after a few seconds, my strength pitiful as I sob through my weak attempts. ‘Move,’ the nurse says, pushing his way past me. ‘We need some weight behind the compressions.’ So much air leaves my lungs, they hurt. He glances at the monitor as he puts his hands into position, and I can see the doubt in his eyes. But he starts pumping anyway, his jaw tight. He’s exhausted; there’s a sheen of sweat coating his face. He doesn’t ask for someone

