Nevada law provides very specific procedures for filing a medical malpractice claim. Unless these procedures are followed closely and all requirements are met, the medical malpractice case will not succeed. One of the biggest considerations when filing a malpractice claim is whether the victim has been injured by the medical professional's alleged breach of the standard of care. Because people who require the services of a medical professional are often severely ill or undergoing procedures that are inherently dangerous, it can be difficult to determine whether the victim's injury or death was the direct result of the health care provider's negligence. To establish this direct causation, in most cases Nevada law requires the person filing a medical malpractice claim to submit the affidavit of a medical expert in the same, or similar field, as the doctor being sued. The affidavit must state that in the opinion of the medical expert, the injury was caused by the negligence of the health care professional being sued and was not the natural result of the victim's illness. If the case proceeds to trial, further testimony from medical experts will be necessary to establish that the injury was caused by the doctor or medical staff's negligence.