Alberta's Liberal leader is calling on the head of the Calgary Health Region to resign because of what he calls continuing problems in emergency departments, including a recent miscarriage in a hospital waiting room.

CEO Jack Davis should resign because emergency rooms are still overcrowded and not providing the level of care they should, Kevin Taft said Friday. 

"These issues are not getting solved. This is not getting better," Taft said.

The opposition leader also wants a public inquiry to be held into hospital operations.

Rose Lundy went to the emergency room at the Peter Lougheed Centre with abdominal pain last week. Three months pregnant, she suffered a miscarriage in the waiting room after staff told her there was a shortage of beds and she would have to wait.

The Calgary Health Region said it is investigating Lundy's case, but will not comment on Taft's call for changes.

"Remember this is not a single incident. This is a pattern that's repeated time and again," Taft said. "If things aren't corrected, if steps aren't taken, if new management isn't put in place, it's going happen again."

Board chair David Tuer should also consider resigning, Taft said.

Health Minister Iris Evans was not available for comment Friday.