Comparison of cerebral perfusion in perimesencephalic subarachnoid hemorrhage and aneurysmal subarachnoid hemorrhage

Fragata, Isabel; Canto-Moreira, Nuno; Canhão, Patrı́cia

doi:10.1007/s00234-018-1997-1

Cited by 7 publications

(1 citation statement)

References 38 publications

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“…Severely increased intracranial pressure is rare at the onset of PNSAH due to the low incidence of low-pressure venous hemorrhage, which indicates that patients with PNSAH have good cerebral perfusion ( 42 ). Fragata et al's ( 43 ) study of CT perfusion showed that patients with PNSAH had better cerebral perfusion than aneurysmal SAH patients in the first 72 h.…”

Section: Definition and Variantmentioning

confidence: 99%

Current status of perimesencephalic non-aneurysmal subarachnoid hemorrhage

Hou

2022

Front. Neurol.

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Perimesencephalic nonaneurysmal subarachnoid hemorrhage (PNSAH) is a distinctive disease, representing SAH centered in perimesencephalic cisterns, with negative angiography findings. In recent years, the number of patients with PNSAH has increased significantly; however, the knowledge of PNSAH is insufficient. Therefore, we performed a review of the literature from a PubMed search and recounted our understanding of PNSAH. In this review, we summarized that current high-resolution computed tomography angiography is an acceptable replacement for digital subtraction angiography to rule out aneurysms in PNSAH with strict criteria. The current hypothesis about the etiology of PNSAH is that there is deep vein rupture from aberrant venous anatomy and increased intracranial venous pressure. PNSAH is associated with mild symptoms and lower rates of hydrocephalus and symptomatic vasospasm. For PNSAH, conservative treatment has been the mainstream treatment. PNSAH has a benign clinical course and an excellent prognosis; in long-term follow-up, re-bleeding and death were uncommon.

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Section: Definition and Variantmentioning

confidence: 99%