Clinical Reasoning: An 83-year-old woman with acute right-sided weakness and chest pressure

An 83-year-old right-handed woman presented to the emergency department with right arm and leg weakness. The patient had been feeling well until 1 hour before arrival when she noted that her right hand became clumsy while typing. When she tried to stand, she found that she could not walk because of right leg weakness. The patient denied other complaints until specifically asked about chest pain or pressure. Accompanying her weakness was a moderate-severity sensation of chest pressure without pain or shortness of breath. Because of her symptoms, she called a friend who took her to the emergency department.