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A 70-year-old man presents to the emergency department with sudden onset of severe headache, nausea, and vomiting. He has a history of hypertension and is currently on antihypertensive medication. On examination, he is drowsy and has a blood pressure of 180/110 mmHg. A CT scan of the brain shows a hyperdense area in the right basal ganglia. What is the most likely diagnosis?

A 72-year-old woman with a history of well-controlled hypertension presents with sudden-onset headache and vomiting. Neurological exam reveals mild neck stiffness but is otherwise normal. A CT angiogram reveals a posterior communicating artery aneurysm, which was subsequently coiled. The image shows a post-coiling angiogram. 24 hours post-procedure, she develops worsening headache and new-onset right-sided weakness. What is the MOST appropriate next step?

A 67-year-old man with a history of type 2 diabetes mellitus and hypertension presents to the emergency department with sudden onset of right-sided weakness and slurred speech that began 2 hours ago. He has no history of atrial fibrillation or previous strokes. On examination, his blood pressure is 180/95 mmHg, heart rate is 88 bpm, and he is afebrile. Neurological examination reveals right-sided hemiparesis and expressive aphasia. A non-contrast CT scan of the head shows no evidence of hemorrhage. Which of the following is the most appropriate next step in the management of this patient?

A 68-year-old woman with a history of hypertension and hyperlipidemia presents to the emergency department with a sudden onset of left-sided hemianopia and mild right-sided weakness. Her symptoms began approximately 4 hours prior to arrival. Initial neurological examination reveals intact language function and no cognitive deficits. A CT angiogram was performed, followed by endovascular coiling. The provided image shows a post-operative angiogram. Despite the intervention, the patient's hemianopia persists, and her weakness has slightly worsened. What is the MOST appropriate next step in the management of this patient?

A 55-year-old female presents with new onset right homonymous hemianopia 3 months post-aneurysm coiling. Review the image. What is the MOST likely cause?

A 72-year-old male with a history of hypertension presents with a sudden onset of right-sided weakness and expressive aphasia. He underwent endovascular coiling for a PCA aneurysm 1 year ago. The attached image was obtained. What is the MOST likely cause of his current presentation?

A 67-year-old man presents to the emergency department with sudden onset of severe headache, nausea, and vomiting. He has a history of hypertension and is currently on amlodipine. On examination, he is drowsy but arousable, with a blood pressure of 210/120 mmHg and a heart rate of 90 bpm. Neurological examination reveals a left-sided hemiparesis and a right-sided facial droop. A CT scan of the head shows a hyperdense lesion in the right basal ganglia with surrounding edema. Which of the following is the most appropriate initial management step?

A 68-year-old woman with a history of hypertension and hyperlipidemia presents to the emergency department with a sudden onset of left-sided hemianopia and mild right-sided weakness. Her symptoms began approximately 4 hours prior to arrival. Initial neurological examination reveals intact language function and no cognitive deficits. A CT angiogram was performed, followed by endovascular coiling. The provided image shows a post-operative angiogram. Despite the intervention, the patient's hemianopia persists, and her weakness has slightly worsened. What is the MOST appropriate next step in the management of this patient?

A 72-year-old male with a history of atrial fibrillation and well-controlled hypertension presents with acute onset expressive aphasia and right-sided facial droop. A CT angiogram reveals a posterior cerebral artery aneurysm, which was promptly treated with endovascular coiling. The provided image shows the post-operative angiogram. Despite the intervention, the patient's aphasia persists, and the facial droop has worsened. What is the MOST likely cause of the patient's continued and worsening symptoms?

A 68-year-old woman with a history of hypertension and hyperlipidemia presents to the emergency department with a sudden onset of left-sided hemianopia and mild right-sided weakness. Her symptoms began approximately 4 hours prior to arrival. Initial neurological examination reveals a left homonymous hemianopia, mild right hemiparesis (4/5 strength), and intact sensation. A CT angiogram was performed, and the patient underwent endovascular coiling. The image shows a follow-up angiogram post-procedure. Despite the intervention, the patient's left homonymous hemianopia persists, and her right hemiparesis has not improved. What is the MOST appropriate next step in the management of this patient?

A 62-year-old woman presents to the emergency department with acute confusion and weakness on the right side of her body. She has a history of atrial fibrillation and is on warfarin for anticoagulation. Her INR is 3.5. On examination, she is disoriented to time and place, with a right-sided facial droop and hemiparesis. A CT scan of the head shows a left-sided intracerebral hemorrhage. What is the most appropriate next step in the management of this patient?