2024
Atrial cardiomyopathy revisited—evolution of a concept: a clinical consensus statement of the European Heart Rhythm Association (EHRA) of the ESC, the Heart Rhythm Society (HRS), the Asian Pacific Heart Rhythm Society (APHRS), and the Latin American Heart Rhythm Society (LAHRS)
Goette A, Corradi D, Dobrev D, Aguinaga L, Cabrera J, Chugh S, de Groot J, Soulat-Dufour L, Fenelon G, Hatem S, Jalife J, Lin Y, Lip G, Marcus G, Murray K, Pak H, Schotten U, Takahashi N, Yamaguchi T, Zoghbi W, Nattel S, Mont L, Akar J, Akoum N, Althoff T, Diaz J, Guichard J, Jadidi A, Kalman J, Lim H, Teixeira R. Atrial cardiomyopathy revisited—evolution of a concept: a clinical consensus statement of the European Heart Rhythm Association (EHRA) of the ESC, the Heart Rhythm Society (HRS), the Asian Pacific Heart Rhythm Society (APHRS), and the Latin American Heart Rhythm Society (LAHRS). EP Europace 2024, 26: euae204. PMID: 39077825, PMCID: PMC11431804, DOI: 10.1093/europace/euae204.Peer-Reviewed Original ResearchConceptsEuropean Heart Rhythm AssociationLatin American Heart Rhythm SocietyHeart Rhythm SocietyClinical consensus statementAtrial fibrillationConsensus statementDevelopment of atrial fibrillationConsensus documentAtrial cardiomyopathyStaging systemElectrophysiological changesClinical validationExpert working groupAtrial geometryHeart
2023
Atrial fibrosis by cardiac MRI is a correlate for atrial stiffness in patients with atrial fibrillation
Lamy J, Taoutel R, Chamoun R, Akar J, Niederer S, Mojibian H, Huber S, Baldassarre L, Meadows J, Peters D. Atrial fibrosis by cardiac MRI is a correlate for atrial stiffness in patients with atrial fibrillation. The International Journal Of Cardiovascular Imaging 2023, 40: 107-117. PMID: 37857929, PMCID: PMC11378145, DOI: 10.1007/s10554-023-02968-x.Peer-Reviewed Original ResearchConceptsLate gadolinium enhancementLA reservoir strainLeft atrial pressureLA volumeReservoir strainLA fibrosisLA strainStiffness indexLA late gadolinium enhancementAtrial stiffness indexMaximal LA volumeAtrial fibrillation cohortLA minimum volumeAtrial tissue fibrosisMaximum LA volumeCardiac MR examsAtrial stiffnessAtrial strainAF ablationAtrial pressureAF cohortAtrial fibrillationAtrial fibrosisPatient subgroupsLGE volumePPP1R12C Promotes Atrial Hypocontractility in Atrial Fibrillation
Perike S, Gonzalez-Gonzalez F, Abu-Taha I, Damen F, Hanft L, Lizama K, Aboonabi A, Capote A, Aguilar-Sanchez Y, Levin B, Han Z, Sridhar A, Grand J, Martin J, Akar J, Warren C, Solaro R, Ong S, Darbar D, McDonald K, Goergen C, Wolska B, Dobrev D, Wehrens X, McCauley M. PPP1R12C Promotes Atrial Hypocontractility in Atrial Fibrillation. Circulation Research 2023, 133: 758-771. PMID: 37737016, PMCID: PMC10616980, DOI: 10.1161/circresaha.123.322516.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAtrial FibrillationHeart AtriaHumansMicePhosphorylationProtein Phosphatase 1StrokeConceptsSinus rhythm controlsAtrial hypocontractilityAF inducibilityAtrial contractilityAtrial fibrillationRhythm controlHuman patientsRight atrial appendage tissuePacing-induced AFThromboembolic stroke riskAtrial ejection fractionAtrial appendage tissueAtrial HL-1 cellsHL-1 cellsAtrial strainStroke riskAtrial sizeEjection fractionContractile functionElectrophysiology studyHypocontractilityWestern blotPatientsAtrial myosin light chainSarcomere function
2020
Understanding tricuspid valve remodelling in atrial fibrillation using three-dimensional echocardiography.
Ortiz-Leon XA, Posada-Martinez EL, Trejo-Paredes MC, Ivey-Miranda JB, Pereira J, Crandall I, DaSilva P, Bouman E, Brooks A, Gerardi C, Ugonabo I, Chen W, Houle H, Akar JG, Lin BA, McNamara RL, Lombo-Lievano B, Arias-Godinez JA, Sugeng L. Understanding tricuspid valve remodelling in atrial fibrillation using three-dimensional echocardiography. European Heart Journal - Cardiovascular Imaging 2020, 21: 747-755. PMID: 32372089, DOI: 10.1093/ehjci/jeaa058.Peer-Reviewed Original ResearchConceptsLeft heart diseaseSevere tricuspid regurgitationTricuspid regurgitationAtrial fibrillationTransoesophageal echocardiographyBiatrial dilatationHigher systolic pulmonary artery pressureNormal right ventricular sizeSystolic pulmonary artery pressureImpact of AFSevere functional tricuspid regurgitationTricuspid annulus dilationPulmonary artery pressureRight ventricular sizeFunctional tricuspid regurgitationFractional area changeTA fractional area changeThree-dimensional echocardiographyRV enlargementArtery pressureBiventricular functionTricuspid valveVentricular sizeAF groupSinus rhythm
2019
Recurrence quantification analysis of complex‐fractionated electrograms differentiates active and passive sites during atrial fibrillation
Baher A, Buck B, Fanarjian M, Mounsey J, Gehi A, Chung E, Akar FG, Webber CL, Akar JG, Hummel JP. Recurrence quantification analysis of complex‐fractionated electrograms differentiates active and passive sites during atrial fibrillation. Journal Of Cardiovascular Electrophysiology 2019, 30: 2229-2238. PMID: 31507008, DOI: 10.1111/jce.14161.Peer-Reviewed Original Research
2016
EHRA/HRS/APHRS/SOLAECE expert consensus on atrial cardiomyopathies: definition, characterization, and clinical implication
Goette A, Kalman JM, Aguinaga L, Akar J, Cabrera JA, Chen SA, Chugh SS, Corradi D, D'Avila A, Dobrev D, Fenelon G, Gonzalez M, Hatem SN, Helm R, Hindricks G, Ho SY, Hoit B, Jalife J, Kim YH, Lip GY, Ma CS, Marcus GM, Murray K, Nogami A, Sanders P, Uribe W, Van Wagoner DR, Nattel S, Centurion O, Kuck K, Patton K, Sapp J, Stiles M, Svendsen J, Upadhyay G, Shantsila A. EHRA/HRS/APHRS/SOLAECE expert consensus on atrial cardiomyopathies: definition, characterization, and clinical implication. EP Europace 2016, 18: 1455-1490. PMID: 27402624, PMCID: PMC6392440, DOI: 10.1093/europace/euw161.Peer-Reviewed Original ResearchEHRA/HRS/APHRS/SOLAECE expert consensus on atrial cardiomyopathies: Definition, characterization, and clinical implication
Goette A, Kalman JM, Aguinaga L, Akar J, Cabrera JA, Chen SA, Chugh SS, Corradi D, D’Avila A, Dobrev D, Fenelon G, Gonzalez M, Hatem SN, Helm R, Hindricks G, Ho SY, Hoit B, Jalife J, Kim YH, Lip GY, Ma CS, Marcus GM, Murray K, Nogami A, Sanders P, Uribe W, Van Wagoner DR, Nattel S. EHRA/HRS/APHRS/SOLAECE expert consensus on atrial cardiomyopathies: Definition, characterization, and clinical implication. Heart Rhythm 2016, 14: e3-e40. PMID: 27320515, PMCID: PMC5548137, DOI: 10.1016/j.hrthm.2016.05.028.Peer-Reviewed Original Research
2015
LKB1 deletion causes early changes in atrial channel expression and electrophysiology prior to atrial fibrillation
Kim GE, Ross JL, Xie C, Su KN, Zaha VG, Wu X, Palmeri M, Ashraf M, Akar JG, Russell KS, Akar FG, Young LH. LKB1 deletion causes early changes in atrial channel expression and electrophysiology prior to atrial fibrillation. Cardiovascular Research 2015, 108: 197-208. PMID: 26378152, PMCID: PMC4571838, DOI: 10.1093/cvr/cvv212.Peer-Reviewed Original ResearchConceptsLiver kinase B1Protein kinaseLKB1 deletionMetabolic regulator AMPAtrial fibrillationChannel expressionMHC-CreElectrophysiological functionKnockout mouse modelRelated kinasesLKB1 pathwayGene expressionPerpetuation of AFKinase B1Neonatal atrial myocytesΑMHC-CreKinasePostnatal day 1Patch-clamp recordingsAtrial growthWeeks of ageDeletionSodium current densityAction potential generationSpecific role
2014
3D Real-Time Intracardiac Echocardiographic Visualization of Atrial Structures Relevant to Atrial Fibrillation Ablation
Brysiewicz N, Mitiku T, Haleem K, Bhatt P, Al-Shaaraoui M, Clancy JF, Marieb MA, Sugeng L, Akar JG. 3D Real-Time Intracardiac Echocardiographic Visualization of Atrial Structures Relevant to Atrial Fibrillation Ablation. JACC Cardiovascular Imaging 2014, 7: 97-100. PMID: 24433712, DOI: 10.1016/j.jcmg.2013.09.018.Peer-Reviewed Original Research
2013
Plasma Profiles of Matrix Metalloproteinases and Tissue Inhibitors of the Metalloproteinases Predict Recurrence of Atrial Fibrillation Following Cardioversion
Mukherjee R, Akar JG, Wharton JM, Adams DK, McClure CD, Stroud RE, Rice AD, DeSantis SM, Spinale FG, Gold MR. Plasma Profiles of Matrix Metalloproteinases and Tissue Inhibitors of the Metalloproteinases Predict Recurrence of Atrial Fibrillation Following Cardioversion. Journal Of Cardiovascular Translational Research 2013, 6: 528-535. PMID: 23722357, DOI: 10.1007/s12265-013-9471-2.Peer-Reviewed Original ResearchMeSH KeywordsAgedAtrial FibrillationBiomarkersChi-Square DistributionC-Reactive ProteinElectric CountershockFibrosisHeart AtriaHumansLogistic ModelsMatrix MetalloproteinasesMiddle AgedMultivariate AnalysisNatriuretic Peptide, BrainPeptide FragmentsPredictive Value of TestsRecurrenceRisk FactorsTime FactorsTissue Inhibitor of MetalloproteinasesTreatment OutcomeConceptsAF recurrenceMatrix metalloproteinasesMMP-9TIMP-4MMP-3N-terminus pro B type natriuretic peptideHigh-sensitivity C-reactive protein levelsPro-B-type natriuretic peptideTissue inhibitorC-reactive protein levelsB-type natriuretic peptideLevels of MMPsAtrial fibrillation recurrenceNovel biomarker panelAtrial volumeNatriuretic peptideAtrial fibrosisSinus rhythmPredicts RecurrenceBiomarker panelRecurrenceMultivariate analysisPostcardioversionProtein levelsPlasma samples
2012
2012 HRS/EHRA/ECAS Expert Consensus Statement on Catheter and Surgical Ablation of Atrial Fibrillation: Recommendations for Patient Selection, Procedural Techniques, Patient Management and Follow-up, Definitions, Endpoints, and Research Trial Design
Calkins H, Hindricks G, Cappato R, Kim Y, Saad E, Aguinaga L, Akar J, Badhwar V, Brugada J, Camm J, Chen P, Chen S, Chung M, Nielsen J, Curtis A, Davies D, Day J, d’Avila A, de Groot N, Di Biase L, Duytschaever M, Edgerton J, Ellenbogen K, Ellinor P, Ernst S, Fenelon G, Gerstenfeld E, Haines D, Haissaguerre M, Helm R, Hylek E, Jackman W, Jalife J, Kalman J, Kautzner J, Kottkamp H, Kuck K, Kumagai K, Lee R, Lewalter T, Lindsay B, Macle L, Mansour M, Marchlinski F, Michaud G, Nakagawa H, Natale A, Nattel S, Okumura K, Packer D, Pokushalov E, Reynolds M, Sanders P, Scanavacca M, Schilling R, Tondo C, Tsao H, Verma A, Wilber D, Yamane T. 2012 HRS/EHRA/ECAS Expert Consensus Statement on Catheter and Surgical Ablation of Atrial Fibrillation: Recommendations for Patient Selection, Procedural Techniques, Patient Management and Follow-up, Definitions, Endpoints, and Research Trial Design. Heart Rhythm 2012, 9: 632-696.e21. PMID: 22386883, PMCID: PMC5846182, DOI: 10.1016/j.hrthm.2011.12.016.Peer-Reviewed Original Research
2010
Pericardial Fat Is Independently Associated With Human Atrial Fibrillation
Chekakie M, Welles CC, Metoyer R, Ibrahim A, Shapira AR, Cytron J, Santucci P, Wilber DJ, Akar JG. Pericardial Fat Is Independently Associated With Human Atrial Fibrillation. Journal Of The American College Of Cardiology 2010, 56: 784-788. PMID: 20797492, DOI: 10.1016/j.jacc.2010.03.071.Peer-Reviewed Original ResearchConceptsPericardial fat volumeParoxysmal atrial fibrillationPersistent atrial fibrillationAtrial fibrillationPericardial fatFat volumeAtrial enlargementSinus rhythmPathogenesis of AFSinus rhythm groupTraditional risk factorsVentricular ejection fractionValvular heart diseaseBody mass indexVisceral adipose tissuePersistent AF patientsHuman atrial fibrillationAF independentAF patientsDiabetes mellitusEjection fractionMass indexHeart diseaseRisk factorsInflammatory properties
2007
Surface Electrocardiographic Patterns and Electrophysiologic Characteristics of Atrial Flutter Following Modified Radiofrequency MAZE Procedures
AKAR JG, AL‐CHEKAKIE M, HAI A, BRYSIEWICZ N, PORTER M, VARMA N, SANTUCCI P, WILBER DJ. Surface Electrocardiographic Patterns and Electrophysiologic Characteristics of Atrial Flutter Following Modified Radiofrequency MAZE Procedures. Journal Of Cardiovascular Electrophysiology 2007, 18: 349-355. PMID: 17394449, DOI: 10.1111/j.1540-8167.2007.00761.x.Peer-Reviewed Original ResearchConceptsCavo-tricuspid isthmusIsthmus ablationAtrial flutterElectrophysiological characteristicsElectrophysiological studiesECG appearanceCox maze III procedureIsthmus-dependent right atrial flutterRadiofrequency maze procedureSurface electrocardiographic patternsMitral isthmus ablationRight atrial flutterDiagnostic electrophysiological studyShorter cycle lengthsLA flutterPostoperative arrhythmiasRadiofrequency mazeCardiac surgeryConsecutive patientsAtrial circuitsAtrial fibrillationElectrophysiologic characteristicsSinus rhythmSurgical lesionsElectrocardiographic pattern
2002
Use of global atrial fibrillation organization to optimize the success of burst pace termination
Everett TH, Akar JG, Kok LC, Moorman JR, Haines DE. Use of global atrial fibrillation organization to optimize the success of burst pace termination. Journal Of The American College Of Cardiology 2002, 40: 1831-1840. PMID: 12446068, DOI: 10.1016/s0735-1097(02)02476-2.Peer-Reviewed Original ResearchConceptsAtrial fibrillationRight atriumPace terminationBiatrial pacingAtrial conduction blockSuccess rateBipolar atrial electrogramOverall success rateOrganization indexAtrial pacingDecapolar catheterConduction blockAtrial electrogramsBurst terminationElectrogram recordingsPacingHigh efficacyAtrial fibrillation organizationFibrillationEffect of Electrical and Structural Remodeling on Spatiotemporal Organization in Acute and Persistent Atrial Fibrillation
AKAR JG, EVERETT TH, KOK L, MOORMAN JR, HAINES DE. Effect of Electrical and Structural Remodeling on Spatiotemporal Organization in Acute and Persistent Atrial Fibrillation. Journal Of Cardiovascular Electrophysiology 2002, 13: 1027-1034. PMID: 12435191, DOI: 10.1046/j.1540-8167.2002.01027.x.Peer-Reviewed Original ResearchMeSH KeywordsAcute DiseaseAnimalsAtrial FibrillationAtrial FunctionDisease Models, AnimalDogsElectrocardiographyElectrophysiologic Techniques, CardiacEntropyFemaleFollow-Up StudiesHeart AtriaModels, CardiovascularRecovery of FunctionRefractory Period, ElectrophysiologicalSeverity of Illness IndexStatistics as TopicTreatment OutcomeConceptsAtrial effective refractory periodPersistent atrial fibrillationAcute atrial fibrillationAtrial fibrillationStructural remodelingSinus rhythmMean atrial effective refractory periodEffective refractory periodAtrial sizeElectrical remodelingLeft atriumBasket catheterAF dogsIntracardiac echocardiographyAtrial electrogramsRefractory periodRemodelingFibrillationSpatiotemporal organizationRhythmAcuteEchocardiographyCatheterMajor roleRecovery