{"id":"https://openalex.org/W7202385477","doi":"https://doi.org/10.1055/s-0046-1827159","title":"Clinical and epidemiological comparison between perimesencephalic and non-perimesencephalic, non-aneurysmal subarachnoid hemorrhage: a single-center cohort study from a referral center in a developing country","display_name":"Clinical and epidemiological comparison between perimesencephalic and non-perimesencephalic, non-aneurysmal subarachnoid hemorrhage: a single-center cohort study from a referral center in a developing country","publication_year":2026,"publication_date":"2026-08-13","ids":{"openalex":"https://openalex.org/W7202385477","doi":"https://doi.org/10.1055/s-0046-1827159","pmid":"https://pubmed.ncbi.nlm.nih.gov/42595315","pmcid":"https://www.ncbi.nlm.nih.gov/pmc/articles/13472709"},"language":"en","primary_location":{"id":"doi:10.1055/s-0046-1827159","doi":"https://doi.org/10.1055/s-0046-1827159","is_oa":true,"landing_page_url":"https://doi.org/10.1055/s-0046-1827159","pdf_url":"http://www.thieme-connect.de/products/ejournals/pdf/10.1055/s-0046-1827159.pdf","source":{"id":"https://openalex.org/S166523383","display_name":"Arquivos de Neuro-Psiquiatria","issn_l":"0004-282X","issn":["0004-282X","1678-4227"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","dongbi-c","jufo-1","ki-jl-1","medline","norway-1","oarl","poland-40","russia-white-list-2","scielo"],"host_organization":"https://openalex.org/P4310320000","host_organization_name":"Thieme Medical Publishers (Germany)","host_organization_lineage":["https://openalex.org/P4310320000"],"host_organization_lineage_names":["Thieme Medical Publishers (Germany)"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Arquivos de Neuro-Psiquiatria","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref","doaj","pubmed"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"http://www.thieme-connect.de/products/ejournals/pdf/10.1055/s-0046-1827159.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5054156563","display_name":"Jo\u00e3o Pedro Einsfeld Britz","orcid":"https://orcid.org/0000-0003-0112-0904","observed_orcids":["https://orcid.org/0000-0003-0112-0904"]},"institutions":[{"id":"https://openalex.org/I4210131915","display_name":"Grupo Hospitalar Concei\u00e7\u00e3o","ror":"https://ror.org/0387j8q89","country_code":"BR","type":"healthcare","lineage":["https://openalex.org/I4210131915"]}],"countries":["BR"],"is_corresponding":true,"raw_author_name":"Jo\u00e3o Pedro Einsfeld Britz","raw_affiliation_strings":["Grupo Hospitalar Concei\u00e7\u00e3o, Hospital Cristo Redentor, Departamento de Neurocirurgia, Porto Alegre RS, Brazil"],"raw_orcid":"https://orcid.org/0000-0003-0112-0904","affiliations":[{"raw_affiliation_string":"Grupo Hospitalar Concei\u00e7\u00e3o, Hospital Cristo Redentor, Departamento de Neurocirurgia, Porto Alegre RS, Brazil","institution_ids":["https://openalex.org/I4210131915"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5109816575","display_name":"Rafael Harter Tomaszeski","orcid":"https://orcid.org/0009-0003-7584-3918","observed_orcids":["https://orcid.org/0009-0003-7584-3918"]},"institutions":[{"id":"https://openalex.org/I4210131915","display_name":"Grupo Hospitalar Concei\u00e7\u00e3o","ror":"https://ror.org/0387j8q89","country_code":"BR","type":"healthcare","lineage":["https://openalex.org/I4210131915"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"Rafael Harter Tomaszeski","raw_affiliation_strings":["Grupo Hospitalar Concei\u00e7\u00e3o, Hospital Cristo Redentor, Departamento de Neurocirurgia, Porto Alegre RS, Brazil"],"raw_orcid":"https://orcid.org/0009-0003-7584-3918","affiliations":[{"raw_affiliation_string":"Grupo Hospitalar Concei\u00e7\u00e3o, Hospital Cristo Redentor, Departamento de Neurocirurgia, Porto Alegre RS, Brazil","institution_ids":["https://openalex.org/I4210131915"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5002705002","display_name":"Carla Bittencourt Rynkowski","orcid":"https://orcid.org/0000-0002-6946-2751","observed_orcids":["https://orcid.org/0000-0002-6946-2751"]},"institutions":[{"id":"https://openalex.org/I4210131915","display_name":"Grupo Hospitalar Concei\u00e7\u00e3o","ror":"https://ror.org/0387j8q89","country_code":"BR","type":"healthcare","lineage":["https://openalex.org/I4210131915"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"Carla Bittencourt Rynkowski","raw_affiliation_strings":["Grupo Hospitalar Concei\u00e7\u00e3o, Hospital Cristo Redentor, Unidade de Cuidado Intensivo, Porto Alegre RS, Brazil"],"raw_orcid":"https://orcid.org/0000-0002-6946-2751","affiliations":[{"raw_affiliation_string":"Grupo Hospitalar Concei\u00e7\u00e3o, Hospital Cristo Redentor, Unidade de Cuidado Intensivo, Porto Alegre RS, Brazil","institution_ids":["https://openalex.org/I4210131915"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5016323122","display_name":"Diego Zambonin","orcid":"https://orcid.org/0000-0001-6400-3620","observed_orcids":["https://orcid.org/0000-0001-6400-3620"]},"institutions":[{"id":"https://openalex.org/I4210131915","display_name":"Grupo Hospitalar Concei\u00e7\u00e3o","ror":"https://ror.org/0387j8q89","country_code":"BR","type":"healthcare","lineage":["https://openalex.org/I4210131915"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"Diego Zambonin","raw_affiliation_strings":["Grupo Hospitalar Concei\u00e7\u00e3o, Hospital Cristo Redentor, Departamento de Neurocirurgia, Porto Alegre RS, Brazil"],"raw_orcid":"https://orcid.org/0000-0001-6400-3620","affiliations":[{"raw_affiliation_string":"Grupo Hospitalar Concei\u00e7\u00e3o, Hospital Cristo Redentor, Departamento de Neurocirurgia, Porto Alegre RS, Brazil","institution_ids":["https://openalex.org/I4210131915"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5058148971","display_name":"Ericson Sfreddo","orcid":"https://orcid.org/0000-0001-8539-4202","observed_orcids":["https://orcid.org/0000-0001-8539-4202"]},"institutions":[{"id":"https://openalex.org/I4210131915","display_name":"Grupo Hospitalar Concei\u00e7\u00e3o","ror":"https://ror.org/0387j8q89","country_code":"BR","type":"healthcare","lineage":["https://openalex.org/I4210131915"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"Ericson Sfreddo","raw_affiliation_strings":["Grupo Hospitalar Concei\u00e7\u00e3o, Hospital Cristo Redentor, Departamento de Neurocirurgia, Porto Alegre RS, Brazil"],"raw_orcid":"https://orcid.org/0000-0001-8539-4202","affiliations":[{"raw_affiliation_string":"Grupo Hospitalar Concei\u00e7\u00e3o, Hospital Cristo Redentor, Departamento de Neurocirurgia, Porto Alegre RS, Brazil","institution_ids":["https://openalex.org/I4210131915"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5038004187","display_name":"Paulo Valdeci Worm","orcid":"https://orcid.org/0000-0002-2639-2386","observed_orcids":["https://orcid.org/0000-0002-2639-2386"]},"institutions":[{"id":"https://openalex.org/I4210131915","display_name":"Grupo Hospitalar Concei\u00e7\u00e3o","ror":"https://ror.org/0387j8q89","country_code":"BR","type":"healthcare","lineage":["https://openalex.org/I4210131915"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"Paulo Valdeci Worm","raw_affiliation_strings":["Grupo Hospitalar Concei\u00e7\u00e3o, Hospital Cristo Redentor, Departamento de Neurocirurgia, Porto Alegre RS, Brazil"],"raw_orcid":"https://orcid.org/0000-0002-2639-2386","affiliations":[{"raw_affiliation_string":"Grupo Hospitalar Concei\u00e7\u00e3o, Hospital Cristo Redentor, Departamento de Neurocirurgia, Porto Alegre RS, Brazil","institution_ids":["https://openalex.org/I4210131915"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5054156563"],"corresponding_institution_ids":["https://openalex.org/I4210131915"],"apc_list":{"value":200,"currency":"USD","value_usd":200},"apc_paid":{"value":200,"currency":"USD","value_usd":200},"fwci":0.0,"has_fulltext":true,"cited_by_count":0,"citation_normalized_percentile":{"value":0.0,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"84","issue":"09","first_page":"001","last_page":"007"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10420","display_name":"Intracranial Aneurysms: Treatment and Complications","score":0.9258000254631042,"subfield":{"id":"https://openalex.org/subfields/2728","display_name":"Clinical Neurology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},"topics":[{"id":"https://openalex.org/T10420","display_name":"Intracranial Aneurysms: Treatment and Complications","score":0.9258000254631042,"subfield":{"id":"https://openalex.org/subfields/2728","display_name":"Clinical Neurology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T11763","display_name":"Intracerebral and Subarachnoid Hemorrhage Research","score":0.06239999830722809,"subfield":{"id":"https://openalex.org/subfields/2728","display_name":"Clinical Neurology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T12622","display_name":"Neurosurgical Procedures and Complications","score":0.0031999999191612005,"subfield":{"id":"https://openalex.org/subfields/2728","display_name":"Clinical Neurology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/non-aneurysmal-subarachnoid-hemorrhage","display_name":"non-aneurysmal subarachnoid hemorrhage","score":0.9760000109672546},{"id":"https://openalex.org/keywords/perimesencephalic-subarachnoid-hemorrhage","display_name":"perimesencephalic subarachnoid hemorrhage","score":0.9739999771118164},{"id":"https://openalex.org/keywords/spontaneous-subarachnoid-hemorrhage","display_name":"spontaneous subarachnoid hemorrhage","score":0.8379999995231628},{"id":"https://openalex.org/keywords/cerebral-vasospasm","display_name":"cerebral vasospasm","score":0.7440000176429749},{"id":"https://openalex.org/keywords/hydrocephalus","display_name":"hydrocephalus","score":0.9269999861717224},{"id":"https://openalex.org/keywords/neurological-outcome","display_name":"neurological outcome","score":0.7789999842643738},{"id":"https://openalex.org/keywords/sex-differences","display_name":"sex differences","score":0.7680000066757202},{"id":"https://openalex.org/keywords/developing-countries","display_name":"developing countries","score":0.48399999737739563}],"concepts":[{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.9477999806404114},{"id":"https://openalex.org/C107130276","wikidata":"https://www.wikidata.org/wiki/Q133805","display_name":"Epidemiology","level":2,"score":0.692799985408783},{"id":"https://openalex.org/C2777736543","wikidata":"https://www.wikidata.org/wiki/Q693442","display_name":"Subarachnoid hemorrhage","level":2,"score":0.6251999735832214},{"id":"https://openalex.org/C2778134817","wikidata":"https://www.wikidata.org/wiki/Q193003","display_name":"Hydrocephalus","level":2,"score":0.5866000056266785},{"id":"https://openalex.org/C72563966","wikidata":"https://www.wikidata.org/wiki/Q1303415","display_name":"Cohort","level":2,"score":0.5444999933242798},{"id":"https://openalex.org/C201903717","wikidata":"https://www.wikidata.org/wiki/Q1778788","display_name":"Cohort study","level":2,"score":0.5120999813079834},{"id":"https://openalex.org/C167135981","wikidata":"https://www.wikidata.org/wiki/Q2146302","display_name":"Retrospective cohort study","level":2,"score":0.4726000130176544},{"id":"https://openalex.org/C126838900","wikidata":"https://www.wikidata.org/wiki/Q77604","display_name":"Radiology","level":1,"score":0.4684000015258789},{"id":"https://openalex.org/C2776135927","wikidata":"https://www.wikidata.org/wiki/Q5242559","display_name":"Referral","level":2,"score":0.4530999958515167},{"id":"https://openalex.org/C137627325","wikidata":"https://www.wikidata.org/wiki/Q156318","display_name":"Etiology","level":2,"score":0.44369998574256897},{"id":"https://openalex.org/C187212893","wikidata":"https://www.wikidata.org/wiki/Q123028","display_name":"Pediatrics","level":1,"score":0.39469999074935913},{"id":"https://openalex.org/C2776098176","wikidata":"https://www.wikidata.org/wiki/Q189389","display_name":"Aneurysm","level":2,"score":0.38429999351501465},{"id":"https://openalex.org/C2778506911","wikidata":"https://www.wikidata.org/wiki/Q2849606","display_name":"Vasospasm","level":3,"score":0.37950000166893005},{"id":"https://openalex.org/C141071460","wikidata":"https://www.wikidata.org/wiki/Q40821","display_name":"Surgery","level":1,"score":0.34049999713897705},{"id":"https://openalex.org/C2780073493","wikidata":"https://www.wikidata.org/wiki/Q7523837","display_name":"Single Center","level":2,"score":0.29910001158714294},{"id":"https://openalex.org/C12770488","wikidata":"https://www.wikidata.org/wiki/Q188449","display_name":"Neurosurgery","level":2,"score":0.2623000144958496}],"mesh":[{"descriptor_ui":"D000328","descriptor_name":"Adult","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000368","descriptor_name":"Aged","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D001938","descriptor_name":"Brazil","qualifier_ui":"Q000453","qualifier_name":"epidemiology","is_major_topic":false},{"descriptor_ui":"D003906","descriptor_name":"Developing Countries","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005260","descriptor_name":"Female","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006849","descriptor_name":"Hydrocephalus","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008297","descriptor_name":"Male","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008636","descriptor_name":"Mesencephalon","qualifier_ui":"Q000000981","qualifier_name":"diagnostic imaging","is_major_topic":false},{"descriptor_ui":"D008875","descriptor_name":"Middle Aged","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D011379","descriptor_name":"Prognosis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012737","descriptor_name":"Sex Factors","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D013345","descriptor_name":"Subarachnoid Hemorrhage","qualifier_ui":"Q000000981","qualifier_name":"diagnostic imaging","is_major_topic":true},{"descriptor_ui":"D013345","descriptor_name":"Subarachnoid Hemorrhage","qualifier_ui":"Q000145","qualifier_name":"classification","is_major_topic":true},{"descriptor_ui":"D013345","descriptor_name":"Subarachnoid Hemorrhage","qualifier_ui":"Q000150","qualifier_name":"complications","is_major_topic":true},{"descriptor_ui":"D013345","descriptor_name":"Subarachnoid Hemorrhage","qualifier_ui":"Q000453","qualifier_name":"epidemiology","is_major_topic":true},{"descriptor_ui":"D014057","descriptor_name":"Tomography, X-Ray Computed","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D015331","descriptor_name":"Cohort Studies","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D020301","descriptor_name":"Vasospasm, Intracranial","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false}],"locations_count":4,"locations":[{"id":"doi:10.1055/s-0046-1827159","doi":"https://doi.org/10.1055/s-0046-1827159","is_oa":true,"landing_page_url":"https://doi.org/10.1055/s-0046-1827159","pdf_url":"http://www.thieme-connect.de/products/ejournals/pdf/10.1055/s-0046-1827159.pdf","source":{"id":"https://openalex.org/S166523383","display_name":"Arquivos de Neuro-Psiquiatria","issn_l":"0004-282X","issn":["0004-282X","1678-4227"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","dongbi-c","jufo-1","ki-jl-1","medline","norway-1","oarl","poland-40","russia-white-list-2","scielo"],"host_organization":"https://openalex.org/P4310320000","host_organization_name":"Thieme Medical Publishers (Germany)","host_organization_lineage":["https://openalex.org/P4310320000"],"host_organization_lineage_names":["Thieme Medical Publishers (Germany)"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Arquivos de Neuro-Psiquiatria","raw_type":"journal-article"},{"id":"pmid:42595315","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/42595315","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Arquivos de neuro-psiquiatria","raw_type":"Journal Article"},{"id":"pmh:oai:pubmedcentral.nih.gov:13472709","doi":null,"is_oa":true,"landing_page_url":"https://pmc.ncbi.nlm.nih.gov/articles/PMC13472709/","pdf_url":null,"source":{"id":"https://openalex.org/S2764455111","display_name":"PubMed Central","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Arq Neuropsiquiatr","raw_type":"Text"},{"id":"pmh:oai:doaj.org/article:655668dfcc9e4c1aa00c4f120134a1b6","doi":null,"is_oa":false,"landing_page_url":"https://doaj.org/article/655668dfcc9e4c1aa00c4f120134a1b6","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Arquivos de Neuro-Psiquiatria, Vol 84, Iss 09, Pp 001-007 (2026)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.1055/s-0046-1827159","doi":"https://doi.org/10.1055/s-0046-1827159","is_oa":true,"landing_page_url":"https://doi.org/10.1055/s-0046-1827159","pdf_url":"http://www.thieme-connect.de/products/ejournals/pdf/10.1055/s-0046-1827159.pdf","source":{"id":"https://openalex.org/S166523383","display_name":"Arquivos de Neuro-Psiquiatria","issn_l":"0004-282X","issn":["0004-282X","1678-4227"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","dongbi-c","jufo-1","ki-jl-1","medline","norway-1","oarl","poland-40","russia-white-list-2","scielo"],"host_organization":"https://openalex.org/P4310320000","host_organization_name":"Thieme Medical Publishers (Germany)","host_organization_lineage":["https://openalex.org/P4310320000"],"host_organization_lineage_names":["Thieme Medical Publishers (Germany)"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Arquivos de Neuro-Psiquiatria","raw_type":"journal-article"},"sustainable_development_goals":[{"score":1.0,"id":"https://metadata.un.org/sdg/3","display_name":"Good health and well-being"}],"study_designs":[{"id":"https://openalex.org/study-designs/observational-study","display_name":"Observational Study"}],"awards":[],"funders":[],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W7202385477.pdf","grobid_xml":"https://content.openalex.org/works/W7202385477.grobid-xml"},"referenced_works_count":28,"referenced_works":["https://openalex.org/W1594940367","https://openalex.org/W1820084562","https://openalex.org/W1972966055","https://openalex.org/W1982001416","https://openalex.org/W1991112974","https://openalex.org/W2000607403","https://openalex.org/W2050369099","https://openalex.org/W2118608324","https://openalex.org/W2132276423","https://openalex.org/W2152762881","https://openalex.org/W2176355232","https://openalex.org/W2305483945","https://openalex.org/W2474006888","https://openalex.org/W2562655629","https://openalex.org/W2769154330","https://openalex.org/W2794854386","https://openalex.org/W2801123211","https://openalex.org/W2801577662","https://openalex.org/W3061642435","https://openalex.org/W3120915802","https://openalex.org/W3149926381","https://openalex.org/W3177767510","https://openalex.org/W3185650042","https://openalex.org/W4211004345","https://openalex.org/W4220785146","https://openalex.org/W4293276167","https://openalex.org/W4367671539","https://openalex.org/W4386397443"],"related_works":["https://openalex.org/W4386397443","https://openalex.org/W1594940367","https://openalex.org/W2063523221","https://openalex.org/W2086831577","https://openalex.org/W2027860996","https://openalex.org/W6946235432","https://openalex.org/W2474006888","https://openalex.org/W2147719014","https://openalex.org/W4283397711","https://openalex.org/W3010285341"],"abstract_inverted_index":{"Background:":[0],"Non-aneurysmal":[1],"subarachnoid":[2],"hemorrhage":[3],"(SAH)":[4],"represents":[5],"a":[6,21,68,78,116,253],"heterogeneous":[7],"entity":[8],"with":[9,20,40,72,93,115,121,169,224],"implications":[10],"for":[11,58,96,145],"management":[12],"and":[13,30,46,81,119,135,150,155,177,183,199,211,218,228,244,256],"prognosis.":[14,258],"Perimesencephalic":[15],"SAH":[16,35,171],"(PSAH)":[17],"is":[18],"associated":[19],"more":[22,207],"benign":[23,254],"clinical":[24,59,229,240],"course,":[25],"lower":[26],"rates":[27,42],"of":[28,43,70,106,125,166,216],"complications,":[29],"favorable":[31],"outcomes,":[32],"whereas":[33],"non-perimesencephalic":[34],"(NPSAH)":[36],"tends":[37],"to":[38,66,103],"present":[39,63],"higher":[41,221],"vasospasm,":[44],"hydrocephalus,":[45],"worse":[47],"neurological":[48],"outcomes.":[49],"Recognizing":[50],"these":[51],"distinct":[52],"bleeding":[53,107,126,190],"patterns":[54],"is,":[55],"therefore,":[56],"essential":[57],"management.":[60],"Objective:":[61],"The":[62,189,204,234],"study":[64,89],"aims":[65],"analyze":[67],"series":[69],"patients":[71,168,198,223],"nonaneurysmal":[73,182],"SAH,":[74],"since":[75],"it":[76],"remains":[77],"poorly":[79],"understood":[80],"requires":[82],"further":[83],"investigation.":[84],"Methods:":[85],"A":[86,128,164],"single-center":[87],"cohort":[88],"was":[90,130,192,206],"carried":[91],"out":[92],"all":[94,133],"hospitalizations":[95],"spontaneous":[97,170],"SAH.":[98],"Patients":[99],"were":[100,143,153,172,179,220,231],"classified":[101,180,193],"according":[102],"the":[104,158,186,225,248],"pattern":[105,118,124,191,236],"at":[108,174],"cranial":[109],"computed":[110],"tomography":[111],"(CT),":[112],"as":[113,181,194,200],"those":[114,120,137],"PSAH":[117,195,212,251],"an":[122,238],"aneurysmal":[123,245],"(NPSAH).":[127],"DSA":[129],"performed":[131],"in":[132,185,196,202,209,213,222],"patients,":[134],"only":[136],"who":[138],"showed":[139],"no":[140],"vascular":[141],"abnormalities":[142],"included":[144,184],"data":[146,152],"collection.":[147],"Clinical,":[148],"epidemiological":[149],"functional":[151],"collected":[154],"analyzed,":[156],"comparing":[157],"results":[159],"between":[160,242],"both":[161],"groups.":[162],"Results:":[163],"total":[165],"550":[167],"treated":[173],"our":[175],"center,":[176],"74":[178],"final":[187],"analysis.":[188],"20":[197],"NPSAH":[201,205,226,235],"54.":[203],"prevalent":[208],"women,":[210],"men.":[214],"Rates":[215],"hydrocephalus":[217],"vasospasm":[219],"pattern,":[227],"outcomes":[230],"worse.":[232],"Conclusion:":[233],"had":[237,252],"intermediate":[239],"behavior":[241],"perimesencephalic":[243],"bleeding.":[246],"On":[247],"other":[249],"hand,":[250],"course":[255],"excellent":[257]},"counts_by_year":[],"updated_date":"2026-11-10T11:39:43.021295","created_date":"2026-08-14T00:00:00"}