pulmonary artery the large artery originating from the superior surface of the right ventricle of the heart and carrying deoxygenated blood to the lungs for oxygenation; it starts as the pulmonary trunk, which divides between the fifth and sixth thoracic vertebrae to form the right pulmonary artery that enters the right lung and the left pulmonary ...
Expert witnesses may be subpoenaed (issued with a witness summons), although this is normally a formality to avoid court date clashes. In the United States, under the Federal Rule of Evidence 702 (FRE), an expert witness must be qualified on the topic of testimony.
However, PTSD is a complicated psychological disorder and a plaintiff will have difficulty making this kind of claim without supporting testimony from an expert witness. This article discusses the role of an expert witness and how expert testimony functions to prove a plaintiff's PTSD in a personal injury case.t is not enough for an expert witness to testify as to their qualifications to diagnose PTSD (although that matters) and then give a diagnosis. An expert must explain to the jury what is required to diagnose PTSD and whether the plaintiff, or a person with the same signs and symptoms as the plaintiff, has PTSD.