The PICA usually arises from the VA an average of 8. The posterior inferior cerebellar artery (PICA), usually the largest branch of the VA, arises from its intradural segment approximately 1.5 cm from the origin of the BA. In addition to covering the medical, surgical, and interventional strategies during the acute phase of stroke management, this chapter also provides an overview of the vascular and functional anatomy of the brain the epidemiology, etiology, and pathophysiology of stroke clinical features and complications of stroke. Caplan, in Stroke (Fourth Edition), 2004 Cerebellar Arteries. A blockage or bleed in the brain stem can cause a brain stem stroke and impact a person’s. Diagnostic evaluation should include a careful and detailed history bedside physical and neurological examinations brain, heart, and vascular imaging and laboratory investigations. The brain stem controls several vital body functions, such as heart rate, blood pressure, and breathing. Regardless of the cause, the cerebrovascular accident can be either ischemic or hemorrhagic type. Cerebrovascular disease encompasses a broad spectrum of disorders including stroke and transient ischemic attack. Cerebrovascular disease, one of the most prevalent and devastating diseases among adults, may arise from various sources, including disorders of the brain vasculature, cardiac and pulmonary disorders, and systemic and genetic diseases. A clot from another part of the body that breaks off and becomes trapped in a blood vessel supplying the brain A clot that forms in an artery that supplies.