Most common cause of subarachnoid hemorrhage is-
Correct Answer: Head injury
Description: Ans-CNote-Most common cause - trauma most common nontraumatic - a Berry aneurysm* Most common cause of S AH is rupture of a secular aneurysm (excluding head trauma) - Harrison (a Saccular aneurysm are synonymous with Berry aneurysms and most commonly occurs in the anterior circulation on the circle of Willis)* Between 5% and 10% of strokes are due to SAH. Although hemorrhage is usually from rupture of an aneurysm or AV malformation (893-CMDT-10)* A saccular aneurysm (a berry aneurysm) are usually asymptomatic. They may be associated with polycystic kidney disease and co-arctation of the aorta* *** The hallmark of aneurismal rupture is blood in the CSF*** Sudden headache in the absence of focal neurologic symptoms is the hallmark of aneurismal rupture, focal deficits may occur (hemiparesis, aphasia, and abulia)* A mycotic aneurysm is an infected aneurysm resulting from either an extravascular or intravascular source of infection* Resulting from direct trauma to a vessels with secondary infections most commonly occurs in femoral arteries and less commonly in the arteries of neck* The putamen (Basal ganglia) is the most common site hypertensive haemorrhage*** Phenylpropanolamine (PPA) has been associated with hemorrhagic stroke use for weight loss**Resmussen's aneurysm is the dilation of small and medium-sized pulmonary artery** in a tuberculous cavity* The aneurysm involved in massive bleeding in cavitory tuberculous lesion is Bronchial artery* Most common site of peripheral aneurysms is - Popliteal artery** (923- Baily & Love 25th)* Nerve compressed by aneurysm of posterior communicating artery is - Occulomotor nerve*** Pseudoaneurysm in IV drug abusers is commonly found in Femoral, Brachial and radial artery* The best method to monitor intracranial pressure is - Intraventricular catheter*** Most common location of intracranial neurocysticercosis is Brain parenchyma (epileptic seizure is most common symptoms)Diagnostic strategy in SAHInvestigation of choiceMost sensitive investigation to determine etiology||Non contrast CT scan*DSA* of four vessels (both carotid & both vertebral) to define the anatomical details of aneurysm & to determine other unruptured aneurysm exists|If scan fails|Lumber puncture done to establish blood in CSF(Hallmark)* Most common site of rupture of Abdominal aortic aneurysm is - Laterally into the left retroperitoneum*** Subdural hemorrhage - results from tearing of the superior cerebral veins** at their point of entry into the superior sagittal sinus, caused by, blow on the front or back of the head* Cerebral hemorrhage- caused by rupture of the thin-walled lenticulostriate artery a branch of the middle cerebral artery
Category:
Unknown
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now