A 79-year-old man on warfarin for atrial fibrillation presents with progressive confusion and headache 2 weeks after a minor fall. Vital signs show BP 158/92 mmHg, HR 88/min, RR 16/min, temp 37.2°C. CT head reveals a crescent-shaped hyperdense collection crossing suture lines. Serum INR is 4.2. There is no focal neurologic deficit. Which vessel is most likely ruptured?
- A)Middle meningeal artery
- B)Lenticulostriate arteries
- C)Bridging veinsGABARITO
- D)Subarachnoid cisterns
- E)Posterior communicating artery aneurysm
Explicação
Bridging veins is correct. Subdural hematoma is caused by tearing of bridging veins between the brain surface and dural sinuses, often after minor trauma in elderly patients with cerebral atrophy. The hemorrhage forms a crescent shaped collection that can cros... Ver explicação completa e trilha adaptativa →