{"id":"https://openalex.org/W2031195022","doi":"https://doi.org/10.3109/14017437609167776","title":"Experiences with Various Types of Mitral Valve Prostheses","display_name":"Experiences with Various Types of Mitral Valve Prostheses","publication_year":1976,"publication_date":"1976-01-01","ids":{"openalex":"https://openalex.org/W2031195022","doi":"https://doi.org/10.3109/14017437609167776","mag":"2031195022","pmid":"https://pubmed.ncbi.nlm.nih.gov/951581"},"language":"en","primary_location":{"id":"doi:10.3109/14017437609167776","doi":"https://doi.org/10.3109/14017437609167776","is_oa":false,"landing_page_url":"https://doi.org/10.3109/14017437609167776","pdf_url":null,"source":{"id":"https://openalex.org/S4210205726","display_name":"Scandinavian Journal of Thoracic and Cardiovascular Surgery","issn_l":"0036-5580","issn":["0036-5580"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547","https://openalex.org/P4310320449"],"host_organization_lineage_names":["Taylor & Francis","Informa"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Scandinavian Journal of Thoracic and Cardiovascular Surgery","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref","pubmed"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5066122823","display_name":"Hans Rostad","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I1281400175","display_name":"Oslo University Hospital","ror":"https://ror.org/00j9c2840","country_code":"NO","type":"healthcare","lineage":["https://openalex.org/I1281400175"]}],"countries":["NO"],"is_corresponding":false,"raw_author_name":"Hans Rostad","raw_affiliation_strings":["Surgical Department A, Rikshospitalet, University Hospital, Oslo, Norway"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Surgical Department A, Rikshospitalet, University Hospital, Oslo, Norway","institution_ids":["https://openalex.org/I1281400175"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5111819746","display_name":"Nils B. Fjeld","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I1281400175","display_name":"Oslo University Hospital","ror":"https://ror.org/00j9c2840","country_code":"NO","type":"healthcare","lineage":["https://openalex.org/I1281400175"]}],"countries":["NO"],"is_corresponding":false,"raw_author_name":"Nils Bj\u00f6rn Fjeld","raw_affiliation_strings":["Surgical Department A, Rikshospitalet, University Hospital, Oslo, Norway"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Surgical Department A, Rikshospitalet, University Hospital, Oslo, Norway","institution_ids":["https://openalex.org/I1281400175"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5110013727","display_name":"Karl Victor Hall","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I1281400175","display_name":"Oslo University Hospital","ror":"https://ror.org/00j9c2840","country_code":"NO","type":"healthcare","lineage":["https://openalex.org/I1281400175"]}],"countries":["NO"],"is_corresponding":false,"raw_author_name":"Karl Victor Hall","raw_affiliation_strings":["Surgical Department A, Rikshospitalet, University Hospital, Oslo, Norway"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Surgical Department A, Rikshospitalet, University Hospital, Oslo, Norway","institution_ids":["https://openalex.org/I1281400175"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I1281400175"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":5,"citation_normalized_percentile":{"value":0.16973401,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"10","issue":"2","first_page":"113","last_page":"116"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10172","display_name":"Cardiac Valve Diseases and Treatments","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2705","display_name":"Cardiology and Cardiovascular Medicine"},"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/T10172","display_name":"Cardiac Valve Diseases and Treatments","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2705","display_name":"Cardiology and Cardiovascular Medicine"},"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/T10618","display_name":"Aortic Disease and Treatment Approaches","score":0.0,"subfield":{"id":"https://openalex.org/subfields/2705","display_name":"Cardiology and Cardiovascular Medicine"},"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/T12598","display_name":"Cardiac Structural Anomalies and Repair","score":0.0,"subfield":{"id":"https://openalex.org/subfields/2746","display_name":"Surgery"},"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/prosthetic-mitral-valve","display_name":"mitral valve prosthesis","score":0.9340000152587891},{"id":"https://openalex.org/keywords/bjork-shiley-valve","display_name":"Bj\u00f6rk-Shiley valve","score":0.9789999723434448},{"id":"https://openalex.org/keywords/mitral-valve-replacement","display_name":"mitral valve replacement","score":0.8500000238418579},{"id":"https://openalex.org/keywords/postoperative-mortality","display_name":"postoperative mortality","score":0.734000027179718},{"id":"https://openalex.org/keywords/thromboembolic-events","display_name":"thromboembolic events","score":0.9179999828338623},{"id":"https://openalex.org/keywords/anticoagulation","display_name":"anticoagulation","score":0.8870000243186951},{"id":"https://openalex.org/keywords/functional-class","display_name":"functional class","score":0.7139999866485596},{"id":"https://openalex.org/keywords/prosthetic-heart-valves","display_name":"prosthetic heart valves","score":0.5849999785423279}],"concepts":[{"id":"https://openalex.org/C2777543888","wikidata":"https://www.wikidata.org/wiki/Q369939","display_name":"Mitral valve","level":2,"score":0.6700038313865662},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.6387981176376343},{"id":"https://openalex.org/C2993316766","wikidata":"https://www.wikidata.org/wiki/Q215118","display_name":"Anticoagulant therapy","level":2,"score":0.5338441133499146},{"id":"https://openalex.org/C164705383","wikidata":"https://www.wikidata.org/wiki/Q10379","display_name":"Cardiology","level":1,"score":0.5220001339912415},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.5017337799072266},{"id":"https://openalex.org/C141071460","wikidata":"https://www.wikidata.org/wiki/Q40821","display_name":"Surgery","level":1,"score":0.42544227838516235},{"id":"https://openalex.org/C2775854548","wikidata":"https://www.wikidata.org/wiki/Q6882369","display_name":"Mitral valve replacement","level":3,"score":0.4190971255302429}],"mesh":[{"descriptor_ui":"D005260","descriptor_name":"Female","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005500","descriptor_name":"Follow-Up Studies","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006350","descriptor_name":"Heart Valve Prosthesis","qualifier_ui":"Q000401","qualifier_name":"mortality","is_major_topic":true},{"descriptor_ui":"D006801","descriptor_name":"Humans","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":"D008875","descriptor_name":"Middle Aged","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008943","descriptor_name":"Mitral Valve","qualifier_ui":"Q000601","qualifier_name":"surgery","is_major_topic":true},{"descriptor_ui":"D008944","descriptor_name":"Mitral Valve Insufficiency","qualifier_ui":"Q000601","qualifier_name":"surgery","is_major_topic":false},{"descriptor_ui":"D008946","descriptor_name":"Mitral Valve Stenosis","qualifier_ui":"Q000601","qualifier_name":"surgery","is_major_topic":false},{"descriptor_ui":"D011183","descriptor_name":"Postoperative Complications","qualifier_ui":"Q000401","qualifier_name":"mortality","is_major_topic":false},{"descriptor_ui":"D011379","descriptor_name":"Prognosis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false}],"locations_count":2,"locations":[{"id":"doi:10.3109/14017437609167776","doi":"https://doi.org/10.3109/14017437609167776","is_oa":false,"landing_page_url":"https://doi.org/10.3109/14017437609167776","pdf_url":null,"source":{"id":"https://openalex.org/S4210205726","display_name":"Scandinavian Journal of Thoracic and Cardiovascular Surgery","issn_l":"0036-5580","issn":["0036-5580"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/P4310320547","host_organization_name":"Taylor & Francis","host_organization_lineage":["https://openalex.org/P4310320547","https://openalex.org/P4310320449"],"host_organization_lineage_names":["Taylor & Francis","Informa"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Scandinavian Journal of Thoracic and Cardiovascular Surgery","raw_type":"journal-article"},{"id":"pmid:951581","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/951581","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":"Scandinavian journal of thoracic and cardiovascular surgery","raw_type":"Comparative Study"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/3","score":0.98580002784729,"display_name":"Good health and well-being"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":8,"referenced_works":["https://openalex.org/W2019828463","https://openalex.org/W2029594215","https://openalex.org/W2037368994","https://openalex.org/W2067394777","https://openalex.org/W2398769095","https://openalex.org/W2400408729","https://openalex.org/W2469150952","https://openalex.org/W2924657648"],"related_works":["https://openalex.org/W2012511983","https://openalex.org/W2464066273","https://openalex.org/W2030584780","https://openalex.org/W2410703904","https://openalex.org/W2406798077","https://openalex.org/W2026205940","https://openalex.org/W2413739228","https://openalex.org/W2396697706","https://openalex.org/W2433438984","https://openalex.org/W2415192289"],"abstract_inverted_index":{"During":[0],"the":[1,14,27,30,33,37,49,52,58,70,76,84,94,100,106,113,125,129,138],"period":[2],"1967-1973,":[3],"four":[4],"different":[5],"types":[6],"of":[7,29,93,137],"mitral":[8],"valve":[9,54,60,127],"prostheses":[10],"were":[11,64],"used":[12],"by":[13],"same":[15,38],"surgical":[16,31],"group.":[17,61,78,108],"Altogether":[18],"139":[19],"patients":[20,80,95],"are":[21,141],"included":[22],"in":[23,39,48,57,69,75,105],"this":[24],"study.":[25],"With":[26],"exception":[28],"approach,":[32],"operative":[34],"technique":[35],"was":[36],"all":[40],"groups.":[41],"The":[42,109,133],"total":[43],"mortality":[44],"varied":[45,116],"from":[46,117],"17%":[47],"group":[50],"receiving":[51],"Bj\u00f6rk-Shiley":[53,107,126],"to":[55,91,119],"40%":[56],"Beall":[59,71],"Thrombo-embolic":[62],"complications":[63],"responsible":[65],"for":[66],"three":[67],"deaths":[68],"and":[72,135],"one":[73],"death":[74],"Lillehei-Nakib":[77],"All":[79],"had":[81,96],"been":[82],"on":[83],"adequate":[85],"anticoagulant":[86],"therapy.":[87],"At":[88],"follow-up,":[89],"40":[90],"77%":[92],"improved":[97],"functional":[98],"class,":[99],"best":[101],"results":[102,134],"being":[103],"obtained":[104],"diastolic":[110],"gradients":[111],"across":[112],"prosthetic":[114],"valves":[115],"9":[118],"4":[120],"mmHg":[121],"at":[122],"rest.":[123],"Again,":[124],"gave":[128],"most":[130],"favourable":[131],"result.":[132],"significance":[136],"various":[139],"parameters":[140],"briefly":[142],"discussed.":[143]},"counts_by_year":[],"updated_date":"2026-10-31T12:09:11.096373","created_date":"2016-06-24T00:00:00"}