{"id":"https://openalex.org/W7204264171","doi":"https://doi.org/10.4236/ojem.2026.143017","title":"Risk Factors for Mortality in the Acute Phase of Hemorrhagic Stroke at Befelatanana University Hospital, Antananarivo, Madagascar","display_name":"Risk Factors for Mortality in the Acute Phase of Hemorrhagic Stroke at Befelatanana University Hospital, Antananarivo, Madagascar","publication_year":2026,"publication_date":"2026-01-01","ids":{"openalex":"https://openalex.org/W7204264171","doi":"https://doi.org/10.4236/ojem.2026.143017"},"language":"en","primary_location":{"id":"doi:10.4236/ojem.2026.143017","doi":"https://doi.org/10.4236/ojem.2026.143017","is_oa":true,"landing_page_url":"https://doi.org/10.4236/ojem.2026.143017","pdf_url":"https://www.scirp.net/pdf/ojem_1750386.pdf","source":{"id":"https://openalex.org/S4210187951","display_name":"Open Journal of Emergency Medicine","issn_l":"2332-1806","issn":["2332-1806","2332-1814"],"is_oa":true,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core"],"host_organization":"https://openalex.org/P4310320480","host_organization_name":"Scientific Research Publishing","host_organization_lineage":["https://openalex.org/P4310320480"],"host_organization_lineage_names":["Scientific Research Publishing"],"type":"journal"},"license":"cc-by-nc","license_id":"https://openalex.org/licenses/cc-by-nc","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Open Journal of Emergency Medicine","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"diamond","oa_url":"https://www.scirp.net/pdf/ojem_1750386.pdf","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5009442162","display_name":"Lala Andriamasinavalona Rajaonarison","orcid":"https://orcid.org/0000-0002-1099-7911","observed_orcids":["https://orcid.org/0000-0002-1099-7911"]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Lala Rajaonarison","raw_affiliation_strings":["Department of Neurology , CHU Joseph Ravoahangy Andrianavalona (JRB) , Antananarivo , Madagascar"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Neurology , CHU Joseph Ravoahangy Andrianavalona (JRB) , Antananarivo , Madagascar","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5119108156","display_name":"Volatiana H\u00e9lin\u00e0 Rakotomalala","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Volatiana H\u00e9lin\u00e0 Rakotomalala","raw_affiliation_strings":["Department of Neurology , CHU Joseph Ravoahangy Andrianavalona (JRB) , Antananarivo , Madagascar"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Neurology , CHU Joseph Ravoahangy Andrianavalona (JRB) , Antananarivo , Madagascar","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5010090955","display_name":"Rahamefy Odilon Randrianasolo","orcid":"https://orcid.org/0000-0001-5759-5197","observed_orcids":["https://orcid.org/0000-0001-5759-5197"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Rahamefy Odilon Randrianasolo","raw_affiliation_strings":["Department of Neurology , CHU PZAGA , Mahajanga , Madagascar"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Neurology , CHU PZAGA , Mahajanga , Madagascar","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5046085997","display_name":"Nomena Finiavana Rasaholiarison","orcid":"https://orcid.org/0000-0003-0900-9776","observed_orcids":["https://orcid.org/0000-0003-0900-9776"]},"institutions":[{"id":"https://openalex.org/I4210104797","display_name":"Universit\u00e9 de Fianarantsoa","ror":"https://ror.org/01emdt307","country_code":"MG","type":"education","lineage":["https://openalex.org/I4210104797"]}],"countries":["MG"],"is_corresponding":false,"raw_author_name":"Nomena Finiavana Rasaholiarison","raw_affiliation_strings":["Department of Neurology , CHU Andrainjato , Fianarantsoa , Madagascar"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Neurology , CHU Andrainjato , Fianarantsoa , Madagascar","institution_ids":["https://openalex.org/I4210104797"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5044886615","display_name":"Alain Djacoba Tehindrazanarivelo","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Alain Djacoba Tehindrazanarivelo","raw_affiliation_strings":["Department of Neurology , CHU Joseph Ravoahangy Andrianavalona (JRB) , Antananarivo , Madagascar"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Neurology , CHU Joseph Ravoahangy Andrianavalona (JRB) , Antananarivo , Madagascar","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5009442162"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"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":"14","issue":"03","first_page":"193","last_page":"204"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11763","display_name":"Intracerebral and Subarachnoid Hemorrhage Research","score":0.961899995803833,"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/T11763","display_name":"Intracerebral and Subarachnoid Hemorrhage Research","score":0.961899995803833,"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/T10227","display_name":"Acute Ischemic Stroke Management","score":0.033399999141693115,"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/T10420","display_name":"Intracranial Aneurysms: Treatment and Complications","score":0.002199999988079071,"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/hemorrhagic-stroke","display_name":"hemorrhagic stroke","score":0.9940000176429749},{"id":"https://openalex.org/keywords/stroke-mortality","display_name":"stroke mortality","score":0.7329999804496765},{"id":"https://openalex.org/keywords/risk-factors","display_name":"risk factors","score":0.8859999775886536},{"id":"https://openalex.org/keywords/acute-phase","display_name":"acute phase","score":0.7160000205039978},{"id":"https://openalex.org/keywords/altered-states-of-consciousness","display_name":"altered states of consciousness","score":0.8299999833106995},{"id":"https://openalex.org/keywords/brain-herniation","display_name":"brain herniation","score":0.9940000176429749},{"id":"https://openalex.org/keywords/hydrocephalus","display_name":"hydrocephalus","score":0.996999979019165},{"id":"https://openalex.org/keywords/mean-arterial-pressure","display_name":"mean arterial pressure","score":0.9380000233650208},{"id":"https://openalex.org/keywords/risk-stratification","display_name":"risk stratification","score":0.7649999856948853},{"id":"https://openalex.org/keywords/hospitalized-stroke-patients","display_name":"hospitalized stroke patients","score":0.4099999964237213}],"concepts":[{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.9311000108718872},{"id":"https://openalex.org/C2780645631","wikidata":"https://www.wikidata.org/wiki/Q671554","display_name":"Stroke (engine)","level":2,"score":0.6355999708175659},{"id":"https://openalex.org/C151956035","wikidata":"https://www.wikidata.org/wiki/Q1132755","display_name":"Logistic regression","level":2,"score":0.6036999821662903},{"id":"https://openalex.org/C38180746","wikidata":"https://www.wikidata.org/wiki/Q1952580","display_name":"Multivariate analysis","level":2,"score":0.5947999954223633},{"id":"https://openalex.org/C84393581","wikidata":"https://www.wikidata.org/wiki/Q82642","display_name":"Blood pressure","level":2,"score":0.5680999755859375},{"id":"https://openalex.org/C16568411","wikidata":"https://www.wikidata.org/wiki/Q83042","display_name":"Neurology","level":2,"score":0.5375000238418579},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.5138000249862671},{"id":"https://openalex.org/C50440223","wikidata":"https://www.wikidata.org/wiki/Q1475848","display_name":"Risk factor","level":2,"score":0.42340001463890076},{"id":"https://openalex.org/C3020166492","wikidata":"https://www.wikidata.org/wiki/Q12202","display_name":"Acute stroke","level":3,"score":0.3874000012874603},{"id":"https://openalex.org/C167135981","wikidata":"https://www.wikidata.org/wiki/Q2146302","display_name":"Retrospective cohort study","level":2,"score":0.37450000643730164},{"id":"https://openalex.org/C194828623","wikidata":"https://www.wikidata.org/wiki/Q2861470","display_name":"Emergency medicine","level":1,"score":0.35530000925064087},{"id":"https://openalex.org/C107130276","wikidata":"https://www.wikidata.org/wiki/Q133805","display_name":"Epidemiology","level":2,"score":0.32339999079704285},{"id":"https://openalex.org/C164705383","wikidata":"https://www.wikidata.org/wiki/Q10379","display_name":"Cardiology","level":1,"score":0.32170000672340393},{"id":"https://openalex.org/C141071460","wikidata":"https://www.wikidata.org/wiki/Q40821","display_name":"Surgery","level":1,"score":0.31690001487731934},{"id":"https://openalex.org/C177713679","wikidata":"https://www.wikidata.org/wiki/Q679690","display_name":"Intensive care medicine","level":1,"score":0.3003999888896942},{"id":"https://openalex.org/C187212893","wikidata":"https://www.wikidata.org/wiki/Q123028","display_name":"Pediatrics","level":1,"score":0.2930999994277954},{"id":"https://openalex.org/C2776452961","wikidata":"https://www.wikidata.org/wiki/Q1940733","display_name":"Mean arterial pressure","level":4,"score":0.289900004863739},{"id":"https://openalex.org/C2777466421","wikidata":"https://www.wikidata.org/wiki/Q1266890","display_name":"Vascular disease","level":2,"score":0.28690001368522644},{"id":"https://openalex.org/C2779134260","wikidata":"https://www.wikidata.org/wiki/Q12136","display_name":"Disease","level":2,"score":0.2851000130176544},{"id":"https://openalex.org/C64341305","wikidata":"https://www.wikidata.org/wiki/Q4919225","display_name":"Bivariate analysis","level":2,"score":0.2583000063896179}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.4236/ojem.2026.143017","doi":"https://doi.org/10.4236/ojem.2026.143017","is_oa":true,"landing_page_url":"https://doi.org/10.4236/ojem.2026.143017","pdf_url":"https://www.scirp.net/pdf/ojem_1750386.pdf","source":{"id":"https://openalex.org/S4210187951","display_name":"Open Journal of Emergency Medicine","issn_l":"2332-1806","issn":["2332-1806","2332-1814"],"is_oa":true,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core"],"host_organization":"https://openalex.org/P4310320480","host_organization_name":"Scientific Research Publishing","host_organization_lineage":["https://openalex.org/P4310320480"],"host_organization_lineage_names":["Scientific Research Publishing"],"type":"journal"},"license":"cc-by-nc","license_id":"https://openalex.org/licenses/cc-by-nc","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Open Journal of Emergency Medicine","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.4236/ojem.2026.143017","doi":"https://doi.org/10.4236/ojem.2026.143017","is_oa":true,"landing_page_url":"https://doi.org/10.4236/ojem.2026.143017","pdf_url":"https://www.scirp.net/pdf/ojem_1750386.pdf","source":{"id":"https://openalex.org/S4210187951","display_name":"Open Journal of Emergency Medicine","issn_l":"2332-1806","issn":["2332-1806","2332-1814"],"is_oa":true,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core"],"host_organization":"https://openalex.org/P4310320480","host_organization_name":"Scientific Research Publishing","host_organization_lineage":["https://openalex.org/P4310320480"],"host_organization_lineage_names":["Scientific Research Publishing"],"type":"journal"},"license":"cc-by-nc","license_id":"https://openalex.org/licenses/cc-by-nc","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Open Journal of Emergency Medicine","raw_type":"journal-article"},"sustainable_development_goals":[{"display_name":"Good health and well-being","id":"https://metadata.un.org/sdg/3","score":1.0}],"study_designs":[{"display_name":"Observational Study","id":"https://openalex.org/study-designs/observational-study"}],"awards":[],"funders":[],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W7204264171.pdf","grobid_xml":"https://content.openalex.org/works/W7204264171.grobid-xml"},"referenced_works_count":12,"referenced_works":["https://openalex.org/W2122794709","https://openalex.org/W2161622686","https://openalex.org/W2163411946","https://openalex.org/W2498270852","https://openalex.org/W2565240029","https://openalex.org/W2877484282","https://openalex.org/W2890855531","https://openalex.org/W3008293959","https://openalex.org/W3112466694","https://openalex.org/W4226360583","https://openalex.org/W4363649738","https://openalex.org/W4388698853"],"related_works":["https://openalex.org/W4402782580","https://openalex.org/W2951347386","https://openalex.org/W2877484282","https://openalex.org/W4388698853","https://openalex.org/W4396955839","https://openalex.org/W7118476695","https://openalex.org/W4316368756","https://openalex.org/W1968680349","https://openalex.org/W4300962112","https://openalex.org/W7203882829"],"abstract_inverted_index":{"Background:":[0],"Hemorrhagic":[1],"stroke":[2,44,66],"is":[3],"characterized":[4],"by":[5,68],"the":[6,22,39,80,96,162],"sudden":[7],"onset":[8],"of":[9,13,42,84,101,114,129,152,165],"a":[10,52,57,120,126],"neurological":[11,88],"deficit":[12],"presumed":[14],"vascular":[15],"origin,":[16],"resulting":[17],"from":[18,95,192],"blood":[19],"extravasation":[20],"into":[21],"cerebral":[23,172],"parenchyma.":[24],"This":[25],"study":[26],"aimed":[27],"to":[28,87],"identify":[29],"clinical":[30,190],"and":[31,125,175,189],"paraclinical":[32],"risk":[33,154,187],"factors":[34,155],"associated":[35,136],"with":[36,64,119,137],"mortality":[37,102,138],"during":[38,161],"acute":[40,163],"phase":[41,164],"hemorrhagic":[43,65],"at":[45],"Befelatanana":[46],"University":[47],"Hospital.":[48],"Methods:":[49],"We":[50],"conducted":[51],"retrospective":[53],"case-control":[54],"study,":[55],"over":[56],"30-month":[58],"period.":[59],"All":[60],"hospitalized":[61],"patients":[62,76,92,116],"diagnosed":[63],"confirmed":[67],"neuroimaging":[69],"were":[70,73,91,103,117],"included.":[71],"Cases":[72],"defined":[74],"as":[75,180],"who":[77],"died":[78],"within":[79],"first":[81],"7":[82],"days":[83],"admission":[85],"due":[86],"causes;":[89],"controls":[90],"discharged":[93],"alive":[94],"neurology":[97],"department.":[98],"Independent":[99],"predictors":[100],"subsequently":[104],"identified":[105],"using":[106],"multivariate":[107],"binary":[108],"logistic":[109],"regression.":[110],"Results:":[111],"A":[112],"total":[113],"313":[115],"included,":[118],"slight":[121],"male":[122],"predominance":[123],"(50.8%)":[124],"mean":[127,143,177],"age":[128],"55.5":[130],"\u00b1":[131],"11.3":[132],"years.":[133],"Factors":[134],"significantly":[135],"on":[139],"bivariate":[140],"analysis":[141,168],"included:":[142],"arterial":[144,178],"pressure":[145,179],"\u2265":[146],"130":[147],"mmHg":[148],"(p":[149],"Conclusions:":[150],"Identification":[151],"these":[153],"may":[156],"improve":[157],"early":[158,182],"management":[159],"strategies":[160],"stroke.":[166],"Multivariate":[167],"confirms":[169],"altered":[170],"consciousness,":[171],"herniation,":[173],"hydrocephalus,":[174],"elevated":[176],"independent":[181],"predictors,":[183],"which":[184],"should":[185],"guide":[186],"stratification":[188],"decision-making":[191],"admission.":[193]},"counts_by_year":[],"updated_date":"2026-11-04T10:54:05.112534","created_date":"2026-08-27T00:00:00"}
