Issues-Multiple Claims-Varying Standards of Care-Burden of Proof is a legal concept used in medical malpractice cases. It refers to the issues, multiple claims, and varying standards of care that a plaintiff must prove in order to win a case. The issues in a medical malpractice case can include: whether a doctor owed a duty of care to the patient, whether the doctor breached that duty, and whether the breach was the proximate cause of the harm suffered by the patient. The multiple claims in a medical malpractice case can include claims for negligence, breach of contract, and breach of fiduciary duty. The varying standards of care are the different levels of care that a plaintiff must prove to show that the doctor failed to meet the applicable standard of care. This includes the standard of care of a reasonable and prudent doctor in the same specialty or field. The burden of proof in a medical malpractice case is on the plaintiff to prove the issues, multiple claims, and varying standards of care by a preponderance of the evidence. This means that the plaintiff must show that it is more likely than not that the doctor was negligent and caused the harm suffered by the patient.