{"id":"https://openalex.org/W79609333","doi":null,"title":"Pseudonormalization of transmitral pulsed doppler flow: A/e' ratio during the valsalva maneuver--a new discriminative index.","display_name":"Pseudonormalization of transmitral pulsed doppler flow: A/e' ratio during the valsalva maneuver--a new discriminative index.","publication_year":2007,"publication_date":"2007-06-01","ids":{"openalex":"https://openalex.org/W79609333","mag":"79609333","pmid":"https://pubmed.ncbi.nlm.nih.gov/17849946"},"language":"en","primary_location":{"id":"pmid:17849946","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/17849946","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":"Revista portuguesa de cardiologia : orgao oficial da Sociedade Portuguesa de Cardiologia = Portuguese journal of cardiology : an official journal of the Portuguese Society of Cardiology","raw_type":"Journal Article"},"volume":null,"type":"article","indexed_in":["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/A5111408744","display_name":"Antonio Oliveira An\u00e3o","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210106487","display_name":"Hospital de Egas Moniz","ror":"https://ror.org/012habm93","country_code":"PT","type":"healthcare","lineage":["https://openalex.org/I4210106487"]},{"id":"https://openalex.org/I4210124394","display_name":"Centro Hospitalar de Lisboa Ocidental","ror":"https://ror.org/036ypft38","country_code":"PT","type":"healthcare","lineage":["https://openalex.org/I4210124394"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"Antonio Oliveira An\u00e3o","raw_affiliation_strings":["Centro Hospitalar de Lisboa Ocidental, Servi\u00e7o de Cardiologia, Hospital de S. Francisco Xavier, Lisboa, Portugal"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Centro Hospitalar de Lisboa Ocidental, Servi\u00e7o de Cardiologia, Hospital de S. Francisco Xavier, Lisboa, Portugal","institution_ids":["https://openalex.org/I4210106487","https://openalex.org/I4210124394"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5014022157","display_name":"Jos\u00e9 Carlos Monge","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I83558840","display_name":"Universidade Nova de Lisboa","ror":"https://ror.org/02xankh89","country_code":"PT","type":"education","lineage":["https://openalex.org/I83558840"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"Jos\u00e9 Monge","raw_affiliation_strings":["NOVA Medical School|Faculdade de Ci\u00eancias M\u00e9dicas (NMS|FCM)"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"NOVA Medical School|Faculdade de Ci\u00eancias M\u00e9dicas (NMS|FCM)","institution_ids":["https://openalex.org/I83558840"]}]},{"author_position":"middle","author":{"id":null,"display_name":"Jo\u00e3o Galv\u00e3o","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Jo\u00e3o Galv\u00e3o","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5058920150","display_name":"Lu\u00eds Bronze","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Lu\u00eds Bronze","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5018536674","display_name":"Jose Azevedo","orcid":"https://orcid.org/0000-0002-7172-4298","observed_orcids":["https://orcid.org/0000-0002-7172-4298"]},"institutions":[{"id":"https://openalex.org/I83558840","display_name":"Universidade Nova de Lisboa","ror":"https://ror.org/02xankh89","country_code":"PT","type":"education","lineage":["https://openalex.org/I83558840"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"Jos\u00e9 Azevedo","raw_affiliation_strings":["NOVA Medical School|Faculdade de Ci\u00eancias M\u00e9dicas (NMS|FCM)"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"NOVA Medical School|Faculdade de Ci\u00eancias M\u00e9dicas (NMS|FCM)","institution_ids":["https://openalex.org/I83558840"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5006834183","display_name":"H Cust\u00f3dio","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Helena Cust\u00f3dio","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5110938905","display_name":"Isabel Arroja","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Isabel Arroja","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5023654758","display_name":"Ana Aleixo","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I83558840","display_name":"Universidade Nova de Lisboa","ror":"https://ror.org/02xankh89","country_code":"PT","type":"education","lineage":["https://openalex.org/I83558840"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"Ana Aleixo","raw_affiliation_strings":["NOVA Medical School|Faculdade de Ci\u00eancias M\u00e9dicas (NMS|FCM)"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"NOVA Medical School|Faculdade de Ci\u00eancias M\u00e9dicas (NMS|FCM)","institution_ids":["https://openalex.org/I83558840"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.2337,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.64610969,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"26","issue":"6","first_page":"623","last_page":"33"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10821","display_name":"Cardiovascular Function and Risk Factors","score":0.9965999722480774,"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/T10821","display_name":"Cardiovascular Function and Risk Factors","score":0.9965999722480774,"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/T10172","display_name":"Cardiac Valve Diseases and Treatments","score":0.0020000000949949026,"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/T10924","display_name":"Cardiovascular Health and Disease Prevention","score":0.00019999999494757503,"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/valsalva-maneuver","display_name":"Valsalva maneuver","score":0.9649999737739563},{"id":"https://openalex.org/keywords/a-e-ratio","display_name":"A/E ratio","score":0.8830000162124634},{"id":"https://openalex.org/keywords/mitral-annulus-motion","display_name":"mitral annulus motion","score":0.7020000219345093},{"id":"https://openalex.org/keywords/tissue-doppler-imaging","display_name":"tissue Doppler imaging","score":0.984000027179718},{"id":"https://openalex.org/keywords/diastolic-filling-velocity","display_name":"diastolic filling velocity","score":0.5450000166893005},{"id":"https://openalex.org/keywords/sensitivity-and-specificity","display_name":"sensitivity and specificity","score":0.734000027179718},{"id":"https://openalex.org/keywords/color-m-mode-doppler","display_name":"color M-mode Doppler","score":0.7310000061988831},{"id":"https://openalex.org/keywords/left-ventricular-filling","display_name":"left ventricular filling","score":0.4830000102519989}],"concepts":[{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.8388245105743408},{"id":"https://openalex.org/C164705383","wikidata":"https://www.wikidata.org/wiki/Q10379","display_name":"Cardiology","level":1,"score":0.7494738101959229},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.7043159008026123},{"id":"https://openalex.org/C57900726","wikidata":"https://www.wikidata.org/wiki/Q492905","display_name":"Diastole","level":3,"score":0.645936906337738},{"id":"https://openalex.org/C142757262","wikidata":"https://www.wikidata.org/wiki/Q76436","display_name":"Doppler effect","level":2,"score":0.46807560324668884},{"id":"https://openalex.org/C109982973","wikidata":"https://www.wikidata.org/wiki/Q5297353","display_name":"Doppler imaging","level":4,"score":0.4590602517127991},{"id":"https://openalex.org/C2777517520","wikidata":"https://www.wikidata.org/wiki/Q1427231","display_name":"Valsalva maneuver","level":3,"score":0.41452106833457947},{"id":"https://openalex.org/C84393581","wikidata":"https://www.wikidata.org/wiki/Q82642","display_name":"Blood pressure","level":2,"score":0.2171849012374878},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.0}],"mesh":[{"descriptor_ui":"D000328","descriptor_name":"Adult","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D003971","descriptor_name":"Diastole","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":"D006325","descriptor_name":"Heart Atria","qualifier_ui":"Q000000981","qualifier_name":"diagnostic imaging","is_major_topic":false},{"descriptor_ui":"D006325","descriptor_name":"Heart Atria","qualifier_ui":"Q000503","qualifier_name":"physiopathology","is_major_topic":false},{"descriptor_ui":"D006331","descriptor_name":"Heart Diseases","qualifier_ui":"Q000000981","qualifier_name":"diagnostic imaging","is_major_topic":true},{"descriptor_ui":"D006331","descriptor_name":"Heart Diseases","qualifier_ui":"Q000503","qualifier_name":"physiopathology","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":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012680","descriptor_name":"Sensitivity and Specificity","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D014636","descriptor_name":"Valsalva Maneuver","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D018619","descriptor_name":"Echocardiography, Doppler, Pulsed","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true}],"locations_count":2,"locations":[{"id":"pmid:17849946","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/17849946","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":"Revista portuguesa de cardiologia : orgao oficial da Sociedade Portuguesa de Cardiologia = Portuguese journal of cardiology : an official journal of the Portuguese Society of Cardiology","raw_type":"Journal Article"},{"id":"mag:79609333","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/17849946","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":null,"is_accepted":false,"is_published":false,"raw_source_name":"PubMed","raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.9907000064849854,"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":false,"pdf":false},"content_urls":null,"referenced_works_count":10,"referenced_works":["https://openalex.org/W1518906397","https://openalex.org/W2003387215","https://openalex.org/W2013541227","https://openalex.org/W2017850911","https://openalex.org/W2019956146","https://openalex.org/W2021219119","https://openalex.org/W2032478208","https://openalex.org/W2040781580","https://openalex.org/W2103072331","https://openalex.org/W2205645671"],"related_works":["https://openalex.org/W7096289046","https://openalex.org/W1993281655","https://openalex.org/W2429615857","https://openalex.org/W2410699053","https://openalex.org/W2032313594","https://openalex.org/W2757679434","https://openalex.org/W2137090129","https://openalex.org/W2053125433","https://openalex.org/W1987196561","https://openalex.org/W2003387215"],"abstract_inverted_index":{"UNLABELLED:":[0],"The":[1,44,266],"Valsalva":[2],"maneuver":[3],"(VM)":[4],"has":[5,362],"frequently":[6],"been":[7],"suggested":[8],"as":[9],"a":[10,27,96,115,315,354,383,405],"useful":[11],"method":[12],"in":[13,61,150,200,252,275,298,318,392,401],"evaluation":[14],"of":[15,26,46,56,82,86,91,98,121,143,205,235,245,260,270,353,371,404],"left":[16],"ventricular":[17],"(LV)":[18],"grade":[19,397],"II":[20,398],"diastolic":[21,31,92,141,168,191,399],"dysfunction":[22,400],"(DDII)":[23],"through":[24],"inversion":[25,58,272],"pseudonormalized":[28,355,406],"ratio":[29,359,377],"between":[30],"transmitral":[32,133,144],"early":[33],"(E)":[34],"and":[35,54,65,111,147,158,163,190,195,215,221,268,282,334,342,345,347],"late":[36],"atrial":[37,159,196],"(A)":[38],"waves":[39,149],"assessed":[40],"by":[41,73,172,229],"pulsed":[42,134,356,407],"Doppler.":[43],"purpose":[45],"our":[47],"study":[48],"was":[49,227,314],"to":[50,210,258,394],"determine":[51],"the":[52,79,83,89,139,164,186,206,211,216,236,243,253,261,288,332,402],"sensitivity":[53,267,333],"specificity":[55,269,335,368],"E/A":[57,271,358,409],"during":[59,264,273,300,326,349,360,380],"VM":[60,226,274,301,361,381],"LV":[62,167,180,224,277,396],"DDII":[63,109,278,293,337],"patients":[64,251],"its":[66,366],"correlation":[67],"with":[68,108,114,232],"mitral":[69,207],"annulus":[70],"motion":[71],"evaluated":[72],"tissue":[74],"Doppler":[75,135,175,357,408],"imaging":[76],"(TDI).":[77],"Using":[78,132,182],"echocardiographic":[80],"criteria":[81],"European":[84],"Society":[85],"Cardiology":[87],"for":[88,179,240,292,336],"diagnosis":[90,294,338],"dysfunction,":[93],"we":[94,137,184],"studied":[95],"group":[97,117],"44":[99],"patients,":[100,231],"27":[101],"male,":[102,126],"aged":[103,127],"59":[104],"+/-":[105,129],"14":[106],"years,":[107],"(DDII-group)":[110],"compared":[112],"them":[113],"control":[116],"(N":[118],"group)":[119],"composed":[120],"33":[122],"healthy":[123],"individuals,":[124],"17":[125],"36":[128],"9":[130],"years.":[131],"analysis,":[136,287],"quantified":[138],"peak":[140,187],"velocities":[142,198],"flow":[145,155,169],"(E":[146],"A":[148],"cm/sec),":[151],"pulmonary":[152],"venous":[153],"systodiastolic":[154],"(PVF:":[156],"S<D":[157],"reversal":[160],">35":[161],"cm/sec)":[162,201],"first":[165],"aliasing":[166],"propagation":[170],"velocity":[171],"color":[173],"M-mode":[174],"(PVF":[176],"<45":[177],"cm/sec":[178],"DDII).":[181],"TDI":[183],"measured":[185],"systolic":[188],"(s'),":[189],"rapid":[192],"filling":[193],"(e')":[194],"(a')":[197],"(Vm":[199],"at":[202,242],"four":[203],"points":[204],"annulus:":[208],"adjacent":[209],"interventricular":[212],"septum":[213],"(P4),":[214],"lateral":[217],"(P2),":[218],"inferior":[219],"(P3)":[220],"anterior":[222],"(P4)":[223],"walls.":[225],"performed":[228],"all":[230],"repeated":[233],"measurements":[234],"above":[237],"parameters":[238],"(except":[239],"PVF)":[241],"point":[244],"their":[246],"maximum":[247],"shift.":[248],"RESULTS:":[249],"Four":[250],"DDII-group":[254],"were":[255,279,339],"excluded":[256],"due":[257],"degradation":[259],"acoustic":[262],"window":[263],"VM.":[265,327,350],"diagnosing":[276],"respectively":[280,340],"88%":[281],"57%.":[283],"On":[284],"ROC":[285,304],"curve":[286,305],"most":[289],"discriminative":[290,386],"index":[291,387],"A/e'":[295,329,376],">":[296,330,378],"4.06":[297],"P2":[299],"(area":[302],"under":[303],"[AUROC]":[306],"=":[307,324],"0.883":[308],"[0,":[309],"78,":[310],"0,":[311],"94]).":[312],"There":[313],"significant":[316],"increase":[317],"AUROC":[319],"(0.74":[320],"vs.":[321],"0.88,":[322],"p":[323],"0.006)":[325],"For":[328],"4.06,":[331],"62%":[341],"78%":[343,348],"pre-VM":[344],"85%":[346],"CONCLUSIONS:":[351],"Inversion":[352],"high":[363],"sensitivity,":[364],"but":[365],"low":[367],"makes":[369],"it":[370],"little":[372],"clinical":[373],"use.":[374],"An":[375],"4.1":[379],"is":[382],"new,":[384],"highly":[385],"that":[388],"can":[389],"be":[390],"used":[391],"practice":[393],"diagnose":[395],"presence":[403],"ratio.":[410]},"counts_by_year":[],"updated_date":"2026-10-31T12:09:11.096373","created_date":"2016-06-24T00:00:00"}
