Cunningham v. Montgomery

*173EDMONDS, J.

Plaintiff appeals from a jury verdict for defendant in this medical malpractice action. Because the trial court erred when it refused to allow plaintiffs expert witness to testify as to her opinion about the medical causation of plaintiff’s condition, we reverse.

In 1991, defendant, a dentist, treated plaintiff for a toothache. He used nitrous oxide to relieve plaintiffs pain and to help her relax while he worked on her teeth. Plaintiff testified that, as she began breathing the gas, she felt as though she were “being sucked into a black hole.” According to plaintiff, she blacked…