What is the test for excluding expert testimony in a medical malpractice case?

"A court's decision to exclude expert testimony is reviewed for abuse of discretion." (Avivi v. Centro Medico Urgente Medical Center (2008) 159 Cal.App.4th 463, 467.) The test for the abuse of discretion standard is whether the trial court's ruling " 'exceeded the bounds of reason.' " (Walker v. Superior Court (1991) 53 Cal.3d 257, 272.)

2. There was no abuse of discretion in precluding expert testimony