How have courts interpreted expert testimony in medical malpractice cases?

However it is clear that what an expert would have done in a specific situation does not of itself always reflect the standard of care. As Carpenter-Gunn J. stated in Bafaro v. Dowd, at para. 36: To the extent than an expert testifies as to what he himself would do in a situation, rather than what the standard of care requires, his testimony does not establish the standard of care nor demonstrate that the defendant doctor breached a standard of care.