A man has been rushed to hospital in a critical condition after he was shot by police following an altercation in Brisbane's north-west.Officers were called to a home on Akebia Street in Arana Hills earlier today to conduct a welfare check."Around 12.30pm (AEST) police were attempting to speak with the man when an altercation occurred, and he was shot," Queensland Police said in a statement.NATIONAL: What to expect from prime minister's rare address to the nationOfficers provided first aid at