Police had to drive an ambulance called for a stab victim as paramedics battled inside to save his life, the High Court has heard.
The 27-year-old man knifed during a confrontation in Belfast would have bled to death within minutes without receiving emergency treatment, a judge was told.
He suffered a collapsed lung and lost so much blood due to an artery being severed that he twice had to be resuscitated, according to the prosecution.
Brian Lane (24), of Cooke Street, Belfast, faces a charge of attempted murder over the incident outside his home on May 29.
During a failed bail application yesterday it was claimed that he acted in self-defence.
Detailing the injuries sustained, Crown counsel Fiona O'Kane told the court the injured man remains critical and on kidney dialysis due to the amount of blood lost.
The judge said the full circumstances of what happened would have to wait until the stabbed man recovers.