{"id":"https://openalex.org/W2329838788","doi":"https://doi.org/10.1109/embc.2014.6944870","title":"Noninvasive blood pressure and the second heart sound analysis","display_name":"Noninvasive blood pressure and the second heart sound analysis","publication_year":2014,"publication_date":"2014-08-01","ids":{"openalex":"https://openalex.org/W2329838788","doi":"https://doi.org/10.1109/embc.2014.6944870","mag":"2329838788","pmid":"https://pubmed.ncbi.nlm.nih.gov/25571238"},"language":"en","primary_location":{"id":"doi:10.1109/embc.2014.6944870","is_oa":false,"landing_page_url":"https://doi.org/10.1109/embc.2014.6944870","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","raw_type":"proceedings-article"},"type":"conference-paper","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/A5061382415","display_name":"Ana Castro","orcid":null},"institutions":[{"id":"https://openalex.org/I182534213","display_name":"Universidade do Porto","ror":"https://ror.org/043pwc612","country_code":"PT","type":"education","lineage":["https://openalex.org/I182534213"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"Ana Castro","raw_affiliation_strings":["Universidade do Porto, Porto, Porto, PT"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Universidade do Porto, Porto, Porto, PT","institution_ids":["https://openalex.org/I182534213"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5017501201","display_name":"Sandra da Silva Mattos","orcid":"https://orcid.org/0000-0003-0896-3568"},"institutions":[{"id":"https://openalex.org/I4210086023","display_name":"Real Hospital Portugu\u00eas","ror":"https://ror.org/00ccgr484","country_code":"BR","type":"healthcare","lineage":["https://openalex.org/I4210086023"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"Sandra S. Mattos","raw_affiliation_strings":["Unidade de Cardiologia e Medicina Fetal, Real Hospital Portugues, Recife, Brasil"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Unidade de Cardiologia e Medicina Fetal, Real Hospital Portugues, Recife, Brasil","institution_ids":["https://openalex.org/I4210086023"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5038594477","display_name":"Miguel Coimbra","orcid":"https://orcid.org/0000-0001-7501-6523"},"institutions":[{"id":"https://openalex.org/I182534213","display_name":"Universidade do Porto","ror":"https://ror.org/043pwc612","country_code":"PT","type":"education","lineage":["https://openalex.org/I182534213"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"Miguel T. Coimbra","raw_affiliation_strings":["Faculdade de Ciencias, Departamento de Ciencia de Computadores, Universidade do Porto, Portugal"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Faculdade de Ciencias, Departamento de Ciencia de Computadores, Universidade do Porto, Portugal","institution_ids":["https://openalex.org/I182534213"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":8,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":"2014","issue":null,"first_page":"5494","last_page":"5497"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12419","display_name":"Phonocardiography and Auscultation Techniques","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2740","display_name":"Pulmonary and Respiratory 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/T12419","display_name":"Phonocardiography and Auscultation Techniques","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2740","display_name":"Pulmonary and Respiratory 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/T11021","display_name":"ECG Monitoring and Analysis","score":0.9470999836921692,"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/blood-pressure","display_name":"Blood pressure","score":0.7913167476654053},{"id":"https://openalex.org/keywords/auscultation","display_name":"Auscultation","score":0.7408895492553711},{"id":"https://openalex.org/keywords/sound","display_name":"Sound (geography)","score":0.5456086993217468},{"id":"https://openalex.org/keywords/wavelet","display_name":"Wavelet","score":0.5360299348831177},{"id":"https://openalex.org/keywords/cuff","display_name":"Cuff","score":0.5233573317527771},{"id":"https://openalex.org/keywords/medicine","display_name":"Medicine","score":0.49708297848701477},{"id":"https://openalex.org/keywords/heart-sounds","display_name":"Heart sounds","score":0.46520906686782837},{"id":"https://openalex.org/keywords/cardiology","display_name":"Cardiology","score":0.4562495946884155},{"id":"https://openalex.org/keywords/multivariate-statistics","display_name":"Multivariate statistics","score":0.4187735319137573},{"id":"https://openalex.org/keywords/mean-blood-pressure","display_name":"Mean blood pressure","score":0.41166627407073975},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.38951388001441956},{"id":"https://openalex.org/keywords/pattern-recognition","display_name":"Pattern recognition (psychology)","score":0.389138400554657},{"id":"https://openalex.org/keywords/speech-recognition","display_name":"Speech recognition","score":0.3601002097129822},{"id":"https://openalex.org/keywords/heart-rate","display_name":"Heart rate","score":0.3161576986312866},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.3102034330368042},{"id":"https://openalex.org/keywords/internal-medicine","display_name":"Internal medicine","score":0.29835081100463867},{"id":"https://openalex.org/keywords/acoustics","display_name":"Acoustics","score":0.2918927073478699},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.2754410207271576},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.26226314902305603},{"id":"https://openalex.org/keywords/surgery","display_name":"Surgery","score":0.19917428493499756}],"concepts":[{"id":"https://openalex.org/C84393581","wikidata":"https://www.wikidata.org/wiki/Q82642","display_name":"Blood pressure","level":2,"score":0.7913167476654053},{"id":"https://openalex.org/C2777324038","wikidata":"https://www.wikidata.org/wiki/Q779054","display_name":"Auscultation","level":2,"score":0.7408895492553711},{"id":"https://openalex.org/C203718221","wikidata":"https://www.wikidata.org/wiki/Q491713","display_name":"Sound (geography)","level":2,"score":0.5456086993217468},{"id":"https://openalex.org/C47432892","wikidata":"https://www.wikidata.org/wiki/Q831390","display_name":"Wavelet","level":2,"score":0.5360299348831177},{"id":"https://openalex.org/C2780017030","wikidata":"https://www.wikidata.org/wiki/Q368366","display_name":"Cuff","level":2,"score":0.5233573317527771},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.49708297848701477},{"id":"https://openalex.org/C2779435589","wikidata":"https://www.wikidata.org/wiki/Q967103","display_name":"Heart sounds","level":2,"score":0.46520906686782837},{"id":"https://openalex.org/C164705383","wikidata":"https://www.wikidata.org/wiki/Q10379","display_name":"Cardiology","level":1,"score":0.4562495946884155},{"id":"https://openalex.org/C161584116","wikidata":"https://www.wikidata.org/wiki/Q1952580","display_name":"Multivariate statistics","level":2,"score":0.4187735319137573},{"id":"https://openalex.org/C2992203999","wikidata":"https://www.wikidata.org/wiki/Q1940733","display_name":"Mean blood pressure","level":4,"score":0.41166627407073975},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.38951388001441956},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.389138400554657},{"id":"https://openalex.org/C28490314","wikidata":"https://www.wikidata.org/wiki/Q189436","display_name":"Speech recognition","level":1,"score":0.3601002097129822},{"id":"https://openalex.org/C2777953023","wikidata":"https://www.wikidata.org/wiki/Q1073121","display_name":"Heart rate","level":3,"score":0.3161576986312866},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3102034330368042},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.29835081100463867},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.2918927073478699},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.2754410207271576},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.26226314902305603},{"id":"https://openalex.org/C141071460","wikidata":"https://www.wikidata.org/wiki/Q40821","display_name":"Surgery","level":1,"score":0.19917428493499756},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0}],"mesh":[{"descriptor_ui":"D000293","descriptor_name":"Adolescent","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000293","descriptor_name":"Adolescent","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000293","descriptor_name":"Adolescent","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D001794","descriptor_name":"Blood Pressure","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D001794","descriptor_name":"Blood Pressure","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D001794","descriptor_name":"Blood Pressure","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D001795","descriptor_name":"Blood Pressure Determination","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D001795","descriptor_name":"Blood Pressure Determination","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D001795","descriptor_name":"Blood Pressure Determination","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D002648","descriptor_name":"Child","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D002648","descriptor_name":"Child","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D002648","descriptor_name":"Child","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":"D005260","descriptor_name":"Female","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":"D006326","descriptor_name":"Heart Auscultation","qualifier_ui":"Q000295","qualifier_name":"instrumentation","is_major_topic":false},{"descriptor_ui":"D006326","descriptor_name":"Heart Auscultation","qualifier_ui":"Q000295","qualifier_name":"instrumentation","is_major_topic":false},{"descriptor_ui":"D006326","descriptor_name":"Heart Auscultation","qualifier_ui":"Q000295","qualifier_name":"instrumentation","is_major_topic":false},{"descriptor_ui":"D006326","descriptor_name":"Heart Auscultation","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":false},{"descriptor_ui":"D006326","descriptor_name":"Heart Auscultation","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":false},{"descriptor_ui":"D006326","descriptor_name":"Heart Auscultation","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":false},{"descriptor_ui":"D006347","descriptor_name":"Heart Sounds","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D006347","descriptor_name":"Heart Sounds","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D006347","descriptor_name":"Heart Sounds","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D006801","descriptor_name":"Humans","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":"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":"D008297","descriptor_name":"Male","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":"D012044","descriptor_name":"Regression Analysis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012044","descriptor_name":"Regression Analysis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012044","descriptor_name":"Regression Analysis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012815","descriptor_name":"Signal Processing, Computer-Assisted","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012815","descriptor_name":"Signal Processing, Computer-Assisted","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012815","descriptor_name":"Signal Processing, Computer-Assisted","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D015999","descriptor_name":"Multivariate Analysis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D015999","descriptor_name":"Multivariate Analysis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D015999","descriptor_name":"Multivariate Analysis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false}],"locations_count":2,"locations":[{"id":"doi:10.1109/embc.2014.6944870","is_oa":false,"landing_page_url":"https://doi.org/10.1109/embc.2014.6944870","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","raw_type":"proceedings-article"},{"id":"pmid:25571238","is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/25571238","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,"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":"Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference","raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Good health and well-being","score":0.8100000023841858,"id":"https://metadata.un.org/sdg/3"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":12,"referenced_works":["https://openalex.org/W1983068496","https://openalex.org/W1987949413","https://openalex.org/W2011661912","https://openalex.org/W2013608425","https://openalex.org/W2015379761","https://openalex.org/W2015795623","https://openalex.org/W2081741488","https://openalex.org/W2108660397","https://openalex.org/W2116143368","https://openalex.org/W2130095641","https://openalex.org/W2131288011","https://openalex.org/W2585015296"],"related_works":["https://openalex.org/W2462513779","https://openalex.org/W2066804906","https://openalex.org/W1970711085","https://openalex.org/W2037437111","https://openalex.org/W2182736798","https://openalex.org/W2336744104","https://openalex.org/W4210919284","https://openalex.org/W310243274","https://openalex.org/W1601748943","https://openalex.org/W4285661753"],"abstract_inverted_index":{"Heart":[0],"sound":[1,47,52],"characteristics":[2],"are":[3],"linked":[4],"to":[5,39,73,98,104],"blood":[6,79,82,106,145],"pressure,":[7],"and":[8,49,60,69,133],"its":[9],"interpretation":[10],"is":[11],"important":[12],"for":[13,93],"detection":[14],"of":[15,57,78,84,126,131,136,142],"cardiovascular":[16],"disease.":[17],"In":[18],"this":[19],"study,":[20],"heart":[21],"sounds'":[22],"auscultation,":[23],"acquired":[24],"from":[25,66],"children":[26],"patients":[27],"(27":[28],"patients,":[29],"10.2\u00b13.9":[30],"years,":[31],"35.7\u00b120.8":[32],"kg,":[33],"132.3\u00b125.5":[34],"cm),":[35],"were":[36,64,116],"automatically":[37],"segmented":[38],"extract":[40],"the":[41,45,50,67,74,105,113,119,140,143],"two":[42],"main":[43],"components:":[44],"first":[46],"(S1)":[48],"second":[51],"(S2).":[53],"Following,":[54],"a":[55,124,129,134],"set":[56,97],"time,":[58],"frequency,":[59],"wavelet":[61],"based":[62],"features,":[63],"extracted":[65],"S2,":[68],"analyzed":[70],"in":[71,112,139],"relation":[72],"noninvasive":[75],"cuff-based":[76],"measures":[77],"pressure":[80,83,107],"(mean":[81],"78\u00b18.8":[85],"mmHg).":[86],"A":[87],"multivariate":[88],"regression":[89],"analysis":[90],"was":[91],"performed":[92],"each":[94],"S2":[95],"feature":[96],"determine":[99],"which":[100],"features":[101,121],"better":[102],"related":[103],"measurements.":[108],"The":[109],"best":[110],"results,":[111],"leave-one-out":[114],"evaluation,":[115],"obtained":[117],"using":[118],"frequency":[120],"set,":[122],"with":[123],"MAE":[125],"6.08":[127],"mmHg,":[128,138],"MAPE":[130],"7.85%,":[132],"ME":[135],"0.31":[137],"estimation":[141],"mean":[144],"pressure.":[146]},"counts_by_year":[{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":1},{"year":2022,"cited_by_count":1},{"year":2018,"cited_by_count":1},{"year":2016,"cited_by_count":3}],"updated_date":"2026-07-14T23:27:15.235271","created_date":"2025-10-10T00:00:00"}
