{"id":"https://openalex.org/W7221822014","doi":"https://doi.org/10.1136/heartjnl-2026-ics.44","title":"44 High system impedance and clinical outcomes following subcutaneous implantable cardioverter-defibrillator implantation: a single-centre retrospective analysis","display_name":"44 High system impedance and clinical outcomes following subcutaneous implantable cardioverter-defibrillator implantation: a single-centre retrospective analysis","publication_year":2026,"publication_date":"2026-10-01","ids":{"openalex":"https://openalex.org/W7221822014","doi":"https://doi.org/10.1136/heartjnl-2026-ics.44"},"language":"en","primary_location":{"id":"doi:10.1136/heartjnl-2026-ics.44","doi":"https://doi.org/10.1136/heartjnl-2026-ics.44","is_oa":true,"landing_page_url":"https://doi.org/10.1136/heartjnl-2026-ics.44","pdf_url":"https://heart.bmj.com/content/heartjnl/112/Suppl_3/A35.2.full.pdf","source":{"id":"https://openalex.org/S191565391","display_name":"Heart","issn_l":"1355-6037","issn":["1355-6037","1468-201X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","cwts-core","dongbi-b","doyens","jufo-2","ki-jl-2","medline","norway-1","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310319945","host_organization_name":"BMJ","host_organization_lineage":["https://openalex.org/P4310319945"],"host_organization_lineage_names":["BMJ"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"General Posters","raw_type":"proceedings-article"},"volume":null,"type":"conference-paper","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"bronze","oa_url":"https://heart.bmj.com/content/heartjnl/112/Suppl_3/A35.2.full.pdf","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5069736748","display_name":"Roisin Gardiner","orcid":"https://orcid.org/0000-0003-4950-9572","observed_orcids":["https://orcid.org/0000-0003-4950-9572"]},"institutions":[{"id":"https://openalex.org/I1308923049","display_name":"University Hospitals Birmingham NHS Foundation Trust","ror":"https://ror.org/014ja3n03","country_code":"GB","type":"healthcare","lineage":["https://openalex.org/I1308923049"]},{"id":"https://openalex.org/I2799307867","display_name":"Queen Elizabeth Hospital Birmingham","ror":"https://ror.org/048emj907","country_code":"GB","type":"healthcare","lineage":["https://openalex.org/I1308923049","https://openalex.org/I2799307867"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Roisin Gardiner","raw_affiliation_strings":["Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK","institution_ids":["https://openalex.org/I1308923049","https://openalex.org/I2799307867"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5042006002","display_name":"Yi Lung Gan","orcid":"https://orcid.org/0000-0002-7791-5212","observed_orcids":["https://orcid.org/0000-0002-7791-5212"]},"institutions":[{"id":"https://openalex.org/I1308923049","display_name":"University Hospitals Birmingham NHS Foundation Trust","ror":"https://ror.org/014ja3n03","country_code":"GB","type":"healthcare","lineage":["https://openalex.org/I1308923049"]},{"id":"https://openalex.org/I2799307867","display_name":"Queen Elizabeth Hospital Birmingham","ror":"https://ror.org/048emj907","country_code":"GB","type":"healthcare","lineage":["https://openalex.org/I1308923049","https://openalex.org/I2799307867"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Yi Lung Gan","raw_affiliation_strings":["Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK","institution_ids":["https://openalex.org/I1308923049","https://openalex.org/I2799307867"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5041852407","display_name":"Wen Hui Teh","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I1308923049","display_name":"University Hospitals Birmingham NHS Foundation Trust","ror":"https://ror.org/014ja3n03","country_code":"GB","type":"healthcare","lineage":["https://openalex.org/I1308923049"]},{"id":"https://openalex.org/I2799307867","display_name":"Queen Elizabeth Hospital Birmingham","ror":"https://ror.org/048emj907","country_code":"GB","type":"healthcare","lineage":["https://openalex.org/I1308923049","https://openalex.org/I2799307867"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Wen Hui Teh","raw_affiliation_strings":["Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK","institution_ids":["https://openalex.org/I1308923049","https://openalex.org/I2799307867"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5006007030","display_name":"Jamie Walton","orcid":"https://orcid.org/0000-0002-2856-8613","observed_orcids":["https://orcid.org/0000-0002-2856-8613"]},"institutions":[{"id":"https://openalex.org/I1308923049","display_name":"University Hospitals Birmingham NHS Foundation Trust","ror":"https://ror.org/014ja3n03","country_code":"GB","type":"healthcare","lineage":["https://openalex.org/I1308923049"]},{"id":"https://openalex.org/I2799307867","display_name":"Queen Elizabeth Hospital Birmingham","ror":"https://ror.org/048emj907","country_code":"GB","type":"healthcare","lineage":["https://openalex.org/I1308923049","https://openalex.org/I2799307867"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Jamie Walton","raw_affiliation_strings":["Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK","institution_ids":["https://openalex.org/I1308923049","https://openalex.org/I2799307867"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5070838489","display_name":"Francisco Leyva","orcid":"https://orcid.org/0000-0002-2176-0223","observed_orcids":["https://orcid.org/0000-0002-2176-0223"]},"institutions":[{"id":"https://openalex.org/I1308923049","display_name":"University Hospitals Birmingham NHS Foundation Trust","ror":"https://ror.org/014ja3n03","country_code":"GB","type":"healthcare","lineage":["https://openalex.org/I1308923049"]},{"id":"https://openalex.org/I169199633","display_name":"Aston University","ror":"https://ror.org/05j0ve876","country_code":"GB","type":"education","lineage":["https://openalex.org/I169199633"]},{"id":"https://openalex.org/I2799307867","display_name":"Queen Elizabeth Hospital Birmingham","ror":"https://ror.org/048emj907","country_code":"GB","type":"healthcare","lineage":["https://openalex.org/I1308923049","https://openalex.org/I2799307867"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Francisco Leyva","raw_affiliation_strings":["Aston University, Birmingham, UK","Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Aston University, Birmingham, UK","institution_ids":["https://openalex.org/I169199633"]},{"raw_affiliation_string":"Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK","institution_ids":["https://openalex.org/I1308923049","https://openalex.org/I2799307867"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5023624678","display_name":"Peysh A Patel","orcid":"https://orcid.org/0000-0003-3467-6722","observed_orcids":["https://orcid.org/0000-0003-3467-6722"]},"institutions":[{"id":"https://openalex.org/I1308923049","display_name":"University Hospitals Birmingham NHS Foundation Trust","ror":"https://ror.org/014ja3n03","country_code":"GB","type":"healthcare","lineage":["https://openalex.org/I1308923049"]},{"id":"https://openalex.org/I2799307867","display_name":"Queen Elizabeth Hospital Birmingham","ror":"https://ror.org/048emj907","country_code":"GB","type":"healthcare","lineage":["https://openalex.org/I1308923049","https://openalex.org/I2799307867"]},{"id":"https://openalex.org/I79619799","display_name":"University of Birmingham","ror":"https://ror.org/03angcq70","country_code":"GB","type":"education","lineage":["https://openalex.org/I79619799"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Peysh Patel","raw_affiliation_strings":["Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK","University of Birmingham, Birmingham, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK","institution_ids":["https://openalex.org/I1308923049","https://openalex.org/I2799307867"]},{"raw_affiliation_string":"University of Birmingham, Birmingham, UK","institution_ids":["https://openalex.org/I79619799"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":[],"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":null,"issue":null,"first_page":"A35.2","last_page":"A36"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10598","display_name":"Cardiac pacing and defibrillation studies","score":0.9994999766349792,"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/T10598","display_name":"Cardiac pacing and defibrillation studies","score":0.9994999766349792,"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/T10645","display_name":"Cardiac Arrest and Resuscitation","score":9.999999747378752e-05,"subfield":{"id":"https://openalex.org/subfields/2711","display_name":"Emergency 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/T10217","display_name":"Cardiac electrophysiology and arrhythmias","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/subcutaneous-implantable-cardioverter-defibrillator","display_name":"subcutaneous implantable cardioverter-defibrillator","score":0.9959999918937683},{"id":"https://openalex.org/keywords/system-impedance","display_name":"system impedance","score":0.9039999842643738},{"id":"https://openalex.org/keywords/shock-impedance","display_name":"shock impedance","score":0.7689999938011169},{"id":"https://openalex.org/keywords/defibrillation-threshold","display_name":"defibrillation threshold","score":0.7519999742507935},{"id":"https://openalex.org/keywords/icd-revision","display_name":"ICD revision","score":0.5070000290870667},{"id":"https://openalex.org/keywords/transvenous-icd","display_name":"transvenous ICD","score":0.7950000166893005},{"id":"https://openalex.org/keywords/clinical-outcomes","display_name":"clinical outcomes","score":0.49399998784065247}],"concepts":[{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.85589998960495},{"id":"https://openalex.org/C141071460","wikidata":"https://www.wikidata.org/wiki/Q40821","display_name":"Surgery","level":1,"score":0.4975999891757965},{"id":"https://openalex.org/C126838900","wikidata":"https://www.wikidata.org/wiki/Q77604","display_name":"Radiology","level":1,"score":0.45089998841285706},{"id":"https://openalex.org/C167135981","wikidata":"https://www.wikidata.org/wiki/Q2146302","display_name":"Retrospective cohort study","level":2,"score":0.4271000027656555},{"id":"https://openalex.org/C544519230","wikidata":"https://www.wikidata.org/wiki/Q32566","display_name":"Computed tomography","level":2,"score":0.2768999934196472},{"id":"https://openalex.org/C17829176","wikidata":"https://www.wikidata.org/wiki/Q179043","display_name":"Electrical impedance","level":2,"score":0.2687999904155731},{"id":"https://openalex.org/C172066009","wikidata":"https://www.wikidata.org/wiki/Q5463955","display_name":"Focused Impedance Measurement","level":3,"score":0.23559999465942383},{"id":"https://openalex.org/C81182388","wikidata":"https://www.wikidata.org/wiki/Q353963","display_name":"Complication","level":2,"score":0.2167000025510788},{"id":"https://openalex.org/C2989005","wikidata":"https://www.wikidata.org/wiki/Q214963","display_name":"Nuclear medicine","level":1,"score":0.21559999883174896},{"id":"https://openalex.org/C534262118","wikidata":"https://www.wikidata.org/wiki/Q177719","display_name":"Medical diagnosis","level":2,"score":0.2117999941110611}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1136/heartjnl-2026-ics.44","doi":"https://doi.org/10.1136/heartjnl-2026-ics.44","is_oa":true,"landing_page_url":"https://doi.org/10.1136/heartjnl-2026-ics.44","pdf_url":"https://heart.bmj.com/content/heartjnl/112/Suppl_3/A35.2.full.pdf","source":{"id":"https://openalex.org/S191565391","display_name":"Heart","issn_l":"1355-6037","issn":["1355-6037","1468-201X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","cwts-core","dongbi-b","doyens","jufo-2","ki-jl-2","medline","norway-1","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310319945","host_organization_name":"BMJ","host_organization_lineage":["https://openalex.org/P4310319945"],"host_organization_lineage_names":["BMJ"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"General Posters","raw_type":"proceedings-article"}],"best_oa_location":{"id":"doi:10.1136/heartjnl-2026-ics.44","doi":"https://doi.org/10.1136/heartjnl-2026-ics.44","is_oa":true,"landing_page_url":"https://doi.org/10.1136/heartjnl-2026-ics.44","pdf_url":"https://heart.bmj.com/content/heartjnl/112/Suppl_3/A35.2.full.pdf","source":{"id":"https://openalex.org/S191565391","display_name":"Heart","issn_l":"1355-6037","issn":["1355-6037","1468-201X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","cwts-core","dongbi-b","doyens","jufo-2","ki-jl-2","medline","norway-1","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310319945","host_organization_name":"BMJ","host_organization_lineage":["https://openalex.org/P4310319945"],"host_organization_lineage_names":["BMJ"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"General Posters","raw_type":"proceedings-article"},"sustainable_development_goals":[{"score":1.0,"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":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W7221822014.pdf","grobid_xml":"https://content.openalex.org/works/W7221822014.grobid-xml"},"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W7165856630","https://openalex.org/W7128018770","https://openalex.org/W3204446063","https://openalex.org/W3203973252","https://openalex.org/W3164488199","https://openalex.org/W4398777562","https://openalex.org/W4410330226","https://openalex.org/W4396950666","https://openalex.org/W4378234802","https://openalex.org/W4390373109"],"abstract_inverted_index":{"Background":[0],"Subcutaneous":[1],"implantable":[2],"cardioverter-defibrillators(S-ICDs)":[3],"are":[4,166,182],"an":[5,290],"attractive":[6],"alternative":[7],"to":[8,63,70,225,282],"transvenous(TV)":[9],"systems,":[10],"particularly":[11],"for":[12,37,175],"younger":[13],"patients":[14,76,109,128,172],"who":[15,110],"do":[16],"not":[17],"have":[18],"a":[19,29,35,72,79,82,88,112,131,221,235],"pacing":[20],"indication.":[21],"Shock":[22,187],"impedance":[23,92,121,144,188,195,201,214,246,256],"at":[24,43,46,189,296],"implant":[25,44,141,190],"is":[26,257],"measured":[27,42],"with":[28,78,87,130,244],"defibrillation":[30],"threshold":[31],"test(DFT).":[32],"System":[33,200],"impedance,":[34,39,287],"surrogate":[36],"shock":[38],"can":[40,293],"be":[41,280,294],"and":[45,148,179,193,232,275],"follow-up.":[47,102],"A":[48],"rise":[49],"in":[50,58,81,184,263,270],"impendence":[51],"above":[52],"the":[53,61,96,106,264,297],"recommended":[54],"threshold(>100\u03a9)":[55],"may":[56,268],"result":[57,269],"failure":[59],"of":[60,75,98,108,114,119,285,299],"device":[62],"reliably":[64],"deliver":[65],"therapy.":[66],"Purpose":[67],"We":[68,94],"aimed":[69],"conduct":[71],"retrospective":[73],"analysis":[74],"implanted":[77,129],"S-ICD":[80,115,132,230,261],"single":[83],"tertiary":[84],"referral":[85],"centre":[86],"particular":[89],"focus":[90],"on":[91,101,127,162,202],"values.":[93,122],"examined":[95],"incidence":[97],"high":[99,120,226,245],"impedance(>100\u03a9)":[100],"Furthermore,":[103],"we":[104],"determined":[105],"proportion":[107],"had":[111,213,229,234,240],"revision":[113],"or":[116,158],"TV-ICD":[117,236],"because":[118],"Methods":[123],"Data":[124],"was":[125,191,196,204],"collected":[126],"from":[133,209],"2014-2025":[134],"using":[135],"electronic":[136],"patient":[137,239],"records.":[138],"Patient":[139,177],"characteristics,":[140],"procedure":[142,223],"details,":[143],"values,":[145],"repeat":[146,222,273],"procedures":[147,274],"mortality":[149],"were":[150,173,247],"examined.":[151],"Descriptive":[152],"statistics":[153],"used":[154],"mean(+/-":[155],"standard":[156],"deviation)":[157],"median(interquartile":[159],"range)":[160],"depending":[161],"data":[163],"normality.":[164],"Proportions":[165],"reported":[167],"as":[168],"n(%).":[169],"Results":[170],"186":[171],"eligible":[174],"inclusion.":[176],"characteristics":[178],"ICD":[180,300],"indication":[181],"displayed":[183],"table":[185],"1.":[186],"70.4\u03a9(+/-14.1)":[192],"system":[194,255],"64\u03a9(+/-12.7)":[197],"(table":[198],"2).":[199],"follow-up":[203,262],"82.4\u03a9(+/-26).":[205],"At":[206],"4.7(3.3-6.5)":[207],"years":[208],"implant,":[210],"39":[211],"patients(21%)":[212],"values":[215],">100\u03a9.":[216],"Of":[217],"these,":[218],"8":[219],"underwent":[220],"due":[224],"impedance;":[227],"2(1.1%)":[228],"revision/re-implant":[231],"8(4.3%)":[233],"implanted.":[237],"One":[238],"both.":[241],"30":[242],"patients(16.1%)":[243],"monitored":[248],"without":[249],"immediate":[250],"intervention":[251],"planned.":[252],"Conclusions":[253],"High":[254],"commonly":[258],"encountered":[259],"during":[260],"real-world":[265],"setting.":[266],"This":[267],"unsuccessful":[271],"shocks,":[272],"avoidable":[276],"risk.":[277],"It":[278],"will":[279],"important":[281],"identify":[283],"predictors":[284],"rising":[286],"so":[288],"that":[289],"informed":[291],"decision":[292],"made":[295],"time":[298],"implant.":[301]},"counts_by_year":[],"updated_date":"2026-11-08T12:12:28.789561","created_date":"2026-10-15T00:00:00"}