A KINGS MEADOWS man died from rapid blood loss after being stabbed in his chest cavity, Launceston's Supreme Court has heard.
On day five of the murder trial of Waverley's Michael Vernon Lowe, the court heard from the State Forensic Pathologist for Tasmania Chris Lawrence.
Dr Lawrence said Darren Booth suffered an eight-centimetre stab wound from a knife that went in between his ribs cutting his innominate vein open.
This left a two litre blood clot in his chest and a collapsed lung.
``The knife wound's penetrated through [causing] rapid blood loss,'' he said.
``Are you able to say that's the cause of death,'' crown prosecutor Linda Mason asked.
``In all probability, yes,'' Dr Lawrence replied.
He said there were two other stab wounds to Mr Booth's chest including a four-centimetre deep incise just above his heart.
Mr Lowe, 52, has pleaded not guilty to murdering his ex-partner's boyfriend in the early hours of May 13, 2012, at her Kings Meadows' home.
The crown has alleged Mr Lowe was a jilted lover who stabbed the victim, who'd been trying to fend him off with a cricket stump.
Defence counsel Greg Richardson has argued self-defence.
Yesterday Dr Lawrence said Mr Booth's hand contained defensive type wounds consistent with somebody trying to protect themselves getting stabbed.
Mr Richardson suggested defensive wounds could also be caused by an aggressor.
``I try and take the knife off you in order to stab you with it,'' he said.
``Look, they're defensive type wounds that's all I can say,'' Dr Lawrence said.
He agreed with Mr Richardson that ``all of this is speculation and probability''.
``That's fair, '' Dr Lawrence said.
Earlier Mr Lowe's son, Steven, gave evidence that he had taken his father to the Launceston General Hospital with a head wound after being woken up by him that morning.
He denied cleaning a knife found by police at their home when asked by prosecutor Peter Sherriff.