患者在急診室等待了84小時，"太可怕了" - 道格拉斯-羅斯
Mr Ross said a Freedom of Information request had found not only the case of the patient who waited 84 hours but others who were not treated for 79, 64 and 53 hours.
He explained: "Across Scotland, nearly 10,000 people in the latest week waited more than the target four hours at accident and emergency departments. That is over a third of all patients - the worst on record.
"And it's only September. We know the pressures on our NHS only get worse over the winter, and doctors are damning about what's happening on the front line and the government's response."
Referring to the 84-hour patient wait, she said: "That is clearly an unacceptable situation, but also an exceptional situation and I am certainly more than willing to look into the particular circumstances around that."
She added: "I have been very clear about the action the government is taking to support those on the front line; to ensure that there is much speedier access to accident and emergency - and to health care services more generally - and also to make the more contextual points because this is part of giving confidence to people that we are taking action to address this."
"Listen to the staff. Dr Lailah Peel from the BMA said this week that patients are now presenting at A&E because of complications developed while waiting for treatment and scans.
He told the BBC: "That level of performance that we saw over the weekend of 11 September was just not acceptable and those health boards know that I expect immediate improvement."