{"id":"https://openalex.org/W2017519672","doi":"https://doi.org/10.1097/00002480-200603000-00044","title":"FLOW DYNAMIC ANALYSIS IN A PNEUMATIC VENTRICULAR ASSIST DEVICE: EFFECTS OF VALVE ORIFICE DIRECTION ON STAGNATION REGION","display_name":"FLOW DYNAMIC ANALYSIS IN A PNEUMATIC VENTRICULAR ASSIST DEVICE: EFFECTS OF VALVE ORIFICE DIRECTION ON STAGNATION REGION","publication_year":2006,"publication_date":"2006-03-01","ids":{"openalex":"https://openalex.org/W2017519672","doi":"https://doi.org/10.1097/00002480-200603000-00044","mag":"2017519672"},"language":"en","primary_location":{"id":"doi:10.1097/00002480-200603000-00044","doi":"https://doi.org/10.1097/00002480-200603000-00044","is_oa":false,"landing_page_url":"https://doi.org/10.1097/00002480-200603000-00044","pdf_url":null,"source":{"id":"https://openalex.org/S8999885","display_name":"ASAIO Journal","issn_l":"1058-2916","issn":["1058-2916","1538-943X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-b","doyens","jufo-1","ki-jl-1","medline","norway-1","poland-70","russia-white-list-2"],"host_organization":"https://openalex.org/P4310315671","host_organization_name":"Lippincott Williams & Wilkins","host_organization_lineage":["https://openalex.org/P4310315671","https://openalex.org/P4310318547"],"host_organization_lineage_names":["Lippincott Williams & Wilkins","Wolters Kluwer"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ASAIO Journal","raw_type":"journal-article"},"volume":null,"type":"article","indexed_in":["crossref"],"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/A5017033619","display_name":"Eiki Akagawa","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210111404","display_name":"National Cerebral and Cardiovascular Center","ror":"https://ror.org/01v55qb38","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210111404"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Eiki Akagawa","raw_affiliation_strings":["Department of Artificial Organs, National Cardiovascular Center Research Institute, Suita, Osaka, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Artificial Organs, National Cardiovascular Center Research Institute, Suita, Osaka, Japan","institution_ids":["https://openalex.org/I4210111404"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5025127044","display_name":"Hwansung Lee","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210111404","display_name":"National Cerebral and Cardiovascular Center","ror":"https://ror.org/01v55qb38","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210111404"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Hwansung Lee","raw_affiliation_strings":["Department of Artificial Organs, National Cardiovascular Center Research Institute, Suita, Osaka, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Artificial Organs, National Cardiovascular Center Research Institute, Suita, Osaka, Japan","institution_ids":["https://openalex.org/I4210111404"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5084319283","display_name":"Eisuke Tatsumi","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210111404","display_name":"National Cerebral and Cardiovascular Center","ror":"https://ror.org/01v55qb38","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210111404"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Eisuke Tatsumi","raw_affiliation_strings":["Department of Artificial Organs, National Cardiovascular Center Research Institute, Suita, Osaka, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Artificial Organs, National Cardiovascular Center Research Institute, Suita, Osaka, Japan","institution_ids":["https://openalex.org/I4210111404"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5111563414","display_name":"Akihiko Homma","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210111404","display_name":"National Cerebral and Cardiovascular Center","ror":"https://ror.org/01v55qb38","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210111404"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Akihiko Homma","raw_affiliation_strings":["Department of Artificial Organs, National Cardiovascular Center Research Institute, Suita, Osaka, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Artificial Organs, National Cardiovascular Center Research Institute, Suita, Osaka, Japan","institution_ids":["https://openalex.org/I4210111404"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5052233427","display_name":"Tomonori Tsukiya","orcid":"https://orcid.org/0000-0001-7867-7319","observed_orcids":["https://orcid.org/0000-0001-7867-7319"]},"institutions":[{"id":"https://openalex.org/I4210111404","display_name":"National Cerebral and Cardiovascular Center","ror":"https://ror.org/01v55qb38","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210111404"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Tomonori Tsukiya","raw_affiliation_strings":["Department of Artificial Organs, National Cardiovascular Center Research Institute, Suita, Osaka, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Artificial Organs, National Cardiovascular Center Research Institute, Suita, Osaka, Japan","institution_ids":["https://openalex.org/I4210111404"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5039678353","display_name":"Nobumasa Katagiri","orcid":"https://orcid.org/0000-0002-5045-6781","observed_orcids":["https://orcid.org/0000-0002-5045-6781"]},"institutions":[{"id":"https://openalex.org/I4210111404","display_name":"National Cerebral and Cardiovascular Center","ror":"https://ror.org/01v55qb38","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210111404"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Nobumasa Katagiri","raw_affiliation_strings":["Department of Artificial Organs, National Cardiovascular Center Research Institute, Suita, Osaka, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Artificial Organs, National Cardiovascular Center Research Institute, Suita, Osaka, Japan","institution_ids":["https://openalex.org/I4210111404"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5035793121","display_name":"Yukihide Kakuta","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210111404","display_name":"National Cerebral and Cardiovascular Center","ror":"https://ror.org/01v55qb38","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210111404"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Yukihide Kakuta","raw_affiliation_strings":["Department of Artificial Organs, National Cardiovascular Center Research Institute, Suita, Osaka, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Artificial Organs, National Cardiovascular Center Research Institute, Suita, Osaka, Japan","institution_ids":["https://openalex.org/I4210111404"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5063399150","display_name":"Toshihide Mizuno","orcid":"https://orcid.org/0000-0002-2380-0102","observed_orcids":["https://orcid.org/0000-0002-2380-0102"]},"institutions":[{"id":"https://openalex.org/I4210111404","display_name":"National Cerebral and Cardiovascular Center","ror":"https://ror.org/01v55qb38","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210111404"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Toshihide Mizuno","raw_affiliation_strings":["Department of Artificial Organs, National Cardiovascular Center Research Institute, Suita, Osaka, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Artificial Organs, National Cardiovascular Center Research Institute, Suita, Osaka, Japan","institution_ids":["https://openalex.org/I4210111404"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5055762585","display_name":"Tomohiro Nishinaka","orcid":"https://orcid.org/0000-0003-2752-3218","observed_orcids":["https://orcid.org/0000-0003-2752-3218"]},"institutions":[{"id":"https://openalex.org/I4210111404","display_name":"National Cerebral and Cardiovascular Center","ror":"https://ror.org/01v55qb38","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210111404"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Tomohiro Nishinaka","raw_affiliation_strings":["Department of Artificial Organs, National Cardiovascular Center Research Institute, Suita, Osaka, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Artificial Organs, National Cardiovascular Center Research Institute, Suita, Osaka, Japan","institution_ids":["https://openalex.org/I4210111404"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5113908596","display_name":"Kei Ota","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210111404","display_name":"National Cerebral and Cardiovascular Center","ror":"https://ror.org/01v55qb38","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210111404"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Kei Ota","raw_affiliation_strings":["Department of Artificial Organs, National Cardiovascular Center Research Institute, Suita, Osaka, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Artificial Organs, National Cardiovascular Center Research Institute, Suita, Osaka, Japan","institution_ids":["https://openalex.org/I4210111404"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5036796884","display_name":"Rei Kansaku","orcid":"https://orcid.org/0000-0003-4944-6698","observed_orcids":["https://orcid.org/0000-0003-4944-6698"]},"institutions":[{"id":"https://openalex.org/I4210111404","display_name":"National Cerebral and Cardiovascular Center","ror":"https://ror.org/01v55qb38","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210111404"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Rei Kansaku","raw_affiliation_strings":["Department of Artificial Organs, National Cardiovascular Center Research Institute, Suita, Osaka, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Artificial Organs, National Cardiovascular Center Research Institute, Suita, Osaka, Japan","institution_ids":["https://openalex.org/I4210111404"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5109997243","display_name":"Yoshiyuki Taenaka","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210111404","display_name":"National Cerebral and Cardiovascular Center","ror":"https://ror.org/01v55qb38","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210111404"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Yoshiyuki Taenaka","raw_affiliation_strings":["Department of Artificial Organs, National Cardiovascular Center Research Institute, Suita, Osaka, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Artificial Organs, National Cardiovascular Center Research Institute, Suita, Osaka, Japan","institution_ids":["https://openalex.org/I4210111404"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I4210111404"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.16970405,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"52","issue":"2","first_page":"7A","last_page":"7A"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10675","display_name":"Mechanical Circulatory Support Devices","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10675","display_name":"Mechanical Circulatory Support Devices","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11202","display_name":"Cavitation Phenomena in Pumps","score":0.0,"subfield":{"id":"https://openalex.org/subfields/2211","display_name":"Mechanics of Materials"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10172","display_name":"Cardiac Valve Diseases and Treatments","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"}}],"keywords":[{"id":"https://openalex.org/keywords/flow-stagnation","display_name":"flow stagnation","score":0.7229999899864197},{"id":"https://openalex.org/keywords/thrombus-formation","display_name":"thrombus formation","score":0.7419999837875366},{"id":"https://openalex.org/keywords/velocity-profiles","display_name":"velocity profiles","score":0.8289999961853027},{"id":"https://openalex.org/keywords/vortex-flow","display_name":"vortex flow","score":0.7490000128746033},{"id":"https://openalex.org/keywords/implantable-pump","display_name":"implantable pump","score":0.652999997138977},{"id":"https://openalex.org/keywords/flow-visualization","display_name":"flow visualization","score":0.4129999876022339}],"concepts":[{"id":"https://openalex.org/C194242075","wikidata":"https://www.wikidata.org/wiki/Q546776","display_name":"Body orifice","level":2,"score":0.7769994139671326},{"id":"https://openalex.org/C120168410","wikidata":"https://www.wikidata.org/wiki/Q4839622","display_name":"Backflow","level":3,"score":0.7533631920814514},{"id":"https://openalex.org/C164292776","wikidata":"https://www.wikidata.org/wiki/Q5271779","display_name":"Diaphragm (acoustics)","level":3,"score":0.6581100821495056},{"id":"https://openalex.org/C207857233","wikidata":"https://www.wikidata.org/wiki/Q1756248","display_name":"Particle image velocimetry","level":3,"score":0.6128756999969482},{"id":"https://openalex.org/C172120300","wikidata":"https://www.wikidata.org/wiki/Q1134348","display_name":"Volumetric flow rate","level":2,"score":0.5676026344299316},{"id":"https://openalex.org/C57879066","wikidata":"https://www.wikidata.org/wiki/Q41217","display_name":"Mechanics","level":1,"score":0.4850598871707916},{"id":"https://openalex.org/C38349280","wikidata":"https://www.wikidata.org/wiki/Q1434290","display_name":"Flow (mathematics)","level":2,"score":0.47964125871658325},{"id":"https://openalex.org/C143428516","wikidata":"https://www.wikidata.org/wiki/Q1794809","display_name":"Flow coefficient","level":3,"score":0.4611961841583252},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.444468230009079},{"id":"https://openalex.org/C9715774","wikidata":"https://www.wikidata.org/wiki/Q651142","display_name":"Stagnation point","level":3,"score":0.41549164056777954},{"id":"https://openalex.org/C201289731","wikidata":"https://www.wikidata.org/wiki/Q1172599","display_name":"Inlet","level":2,"score":0.3893404006958008},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.21502476930618286},{"id":"https://openalex.org/C78519656","wikidata":"https://www.wikidata.org/wiki/Q101333","display_name":"Mechanical engineering","level":1,"score":0.18456631898880005},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.16965684294700623},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.14013227820396423},{"id":"https://openalex.org/C196558001","wikidata":"https://www.wikidata.org/wiki/Q190132","display_name":"Turbulence","level":2,"score":0.06986469030380249},{"id":"https://openalex.org/C50517652","wikidata":"https://www.wikidata.org/wiki/Q179635","display_name":"Heat transfer","level":2,"score":0.0},{"id":"https://openalex.org/C157138929","wikidata":"https://www.wikidata.org/wiki/Q570","display_name":"Loudspeaker","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1097/00002480-200603000-00044","doi":"https://doi.org/10.1097/00002480-200603000-00044","is_oa":false,"landing_page_url":"https://doi.org/10.1097/00002480-200603000-00044","pdf_url":null,"source":{"id":"https://openalex.org/S8999885","display_name":"ASAIO Journal","issn_l":"1058-2916","issn":["1058-2916","1538-943X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-b","doyens","jufo-1","ki-jl-1","medline","norway-1","poland-70","russia-white-list-2"],"host_organization":"https://openalex.org/P4310315671","host_organization_name":"Lippincott Williams & Wilkins","host_organization_lineage":["https://openalex.org/P4310315671","https://openalex.org/P4310318547"],"host_organization_lineage_names":["Lippincott Williams & Wilkins","Wolters Kluwer"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ASAIO Journal","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.7246000170707703,"id":"https://metadata.un.org/sdg/3","display_name":"Good health and well-being"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2009421002","https://openalex.org/W1996031567","https://openalex.org/W1976425394","https://openalex.org/W2060687082","https://openalex.org/W2701742066","https://openalex.org/W2314415251","https://openalex.org/W2032983414","https://openalex.org/W4389526784","https://openalex.org/W4283032734","https://openalex.org/W1981978684"],"abstract_inverted_index":{"Purpose:":[0],"We":[1],"have":[2],"been":[3],"developing":[4],"an":[5],"implantable":[6],"pneumatic":[7,29],"ventricular":[8],"assist":[9],"device":[10],"(VAD)":[11],"system":[12],"consisting":[13],"of":[14,33,54,63,73,88,101,158,221,230],"a":[15,94],"diaphragm-type":[16],"blood":[17,43,151],"pump.":[18],"A":[19,85,145],"monoleaflet":[20],"mechanical":[21],"valve":[22,55,103],"(Medtronic,":[23],"Medtronic-HallTM)":[24],"was":[25,78,91,104,126,133,153,166,180,198,208],"installed":[26],"in":[27,93,149,169,195,216,219,233],"the":[28,42,52,61,69,74,76,120,124,150,156,170,173,185,189,191,213,228,234],"VAD.":[30,235],"The":[31,99,130,206],"objective":[32],"this":[34,196],"study":[35],"is":[36],"to":[37],"examine":[38],"flow":[39,64,77,142,148,163,192,214,223],"behavior":[40],"inside":[41],"pump,":[44],"which":[45],"may":[46],"greatly":[47],"affect":[48],"thrombus":[49,231],"formation":[50,232],"from":[51],"point":[53],"mount":[56],"orientation.":[57],"Methods:":[58],"To":[59],"analyze":[60],"change":[62],"velocity":[65,164,193],"distribution":[66,165,194],"caused":[67],"by":[68,80,155],"orifice":[70],"direction":[71],"(OD)":[72],"valve,":[75],"visualized":[79],"using":[81],"particle":[82],"image":[83],"velocimetry.":[84],"diluted":[86],"suspension":[87],"tracer":[89],"particles":[90],"perfused":[92],"mock":[95],"circulatory":[96],"loop":[97],"tester.":[98],"OD":[100,121,157,207],"inlet":[102,159,174],"set":[105],"at":[106,135,184,202],"six":[107],"different":[108],"angles":[109],"(OD":[110],"=":[111],"0\u00b0,":[112],"45\u00b0,":[113],"90\u00b0,":[114],"135\u00b0,":[115],"180\u00b0":[116],"and":[117,175,225],"270\u00b0,":[118],"where":[119],"opening":[122],"toward":[123],"diaphragm":[125],"defined":[127],"as":[128],"0\u00b0).":[129],"pump":[131,152],"rate":[132],"fixed":[134],"80":[136],"bpm":[137],"that":[138],"create":[139],"5.0":[140],"L/min":[141],"rate.":[143],"Results:":[144],"main":[146],"vortex":[147],"affected":[154],"valve.":[160],"An":[161],"observed":[162],"relatively":[167],"low":[168],"area":[171,197],"between":[172],"outlet":[176],"port":[177],"roots,":[178],"it":[179],"lowest":[181],"(0.050":[182],"m/s)":[183,201],"90\u00b0":[186],"OD.":[187,204],"On":[188],"contrary,":[190],"highest":[199],"(1.9":[200],"135\u00b0":[203],"Conclusion:":[205],"important":[209],"factor":[210],"for":[211],"optimizing":[212],"condition":[215],"our":[217],"VAD,":[218],"terms":[220],"preventing":[222],"stagnation,":[224],"provably":[226],"reducing":[227],"chance":[229]},"counts_by_year":[],"updated_date":"2026-07-30T17:31:21.811387","created_date":"2016-06-24T00:00:00"}
