PMID- 32114891 OWN - NLM STAT- MEDLINE DCOM- 20210317 LR - 20210317 IS - 2047-9980 (Electronic) IS - 2047-9980 (Linking) VI - 9 IP - 5 DP - 2020 Mar 3 TI - Arrhythmogenic Right Ventricular Cardiomyopathy: Characterization of Left Ventricular Phenotype and Differential Diagnosis With Dilated Cardiomyopathy. PG - e014628 LID - 10.1161/JAHA.119.014628 [doi] LID - e014628 AB - Background This study assessed the prevalence of left ventricular (LV) involvement and characterized the clinical, electrocardiographic, and imaging features of LV phenotype in patients with arrhythmogenic right ventricular cardiomyopathy (ARVC). Differential diagnosis between ARVC-LV phenotype and dilated cardiomyopathy (DCM) was evaluated. Methods and Results The study population included 87 ARVC patients (median age 34 years) and 153 DCM patients (median age 51 years). All underwent cardiac magnetic resonance with quantitative tissue characterization. Fifty-eight ARVC patients (67%) had LV involvement, with both LV systolic dysfunction and LV late gadolinium enhancement (LGE) in 41/58 (71%) and LV-LGE in isolation in 17 (29%). Compared with DCM, the ARVC-LV phenotype was statistically significantly more often characterized by low QRS voltages in limb leads, T-wave inversion in the inferolateral leads and major ventricular arrhythmias. LV-LGE was found in all ARVC patients with LV systolic dysfunction and in 69/153 (45%) of DCM patients. Patients with ARVC and LV systolic dysfunction had a greater amount of LV-LGE (25% versus 13% of LV mass; P<0.01), mostly localized in the subepicardial LV wall layers. An LV-LGE >/=20% had a 100% specificity for diagnosis of ARVC-LV phenotype. An inverse correlation between LV ejection fraction and LV-LGE extent was found in the ARVC-LV phenotype (r=-0.63; P<0.01), but not in DCM (r=-0.01; P=0.94). Conclusions LV involvement in ARVC is common and characterized by clinical and cardiac magnetic resonance features which differ from those seen in DCM. The most distinctive feature of ARVC-LV phenotype is the large amount of LV-LGE/fibrosis, which impacts directly and negatively on the LV systolic function. FAU - Cipriani, Alberto AU - Cipriani A AD - Department of Cardio-Thoraco-Vascular Sciences and Public Health University of Padua Italy. FAU - Bauce, Barbara AU - Bauce B AD - Department of Cardio-Thoraco-Vascular Sciences and Public Health University of Padua Italy. FAU - De Lazzari, Manuel AU - De Lazzari M AD - Department of Cardio-Thoraco-Vascular Sciences and Public Health University of Padua Italy. FAU - Rigato, Ilaria AU - Rigato I AD - Department of Cardio-Thoraco-Vascular Sciences and Public Health University of Padua Italy. FAU - Bariani, Riccardo AU - Bariani R AD - Department of Cardio-Thoraco-Vascular Sciences and Public Health University of Padua Italy. FAU - Meneghin, Samuele AU - Meneghin S AD - Department of Cardio-Thoraco-Vascular Sciences and Public Health University of Padua Italy. FAU - Pilichou, Kalliopi AU - Pilichou K AD - Department of Cardio-Thoraco-Vascular Sciences and Public Health University of Padua Italy. FAU - Motta, Raffaella AU - Motta R AD - Department of Medicine Institute of Radiology University of Padua Italy. FAU - Aliberti, Camillo AU - Aliberti C AD - Department of Medicine Institute of Radiology University of Padua Italy. FAU - Thiene, Gaetano AU - Thiene G AD - Department of Cardio-Thoraco-Vascular Sciences and Public Health University of Padua Italy. FAU - McKenna, William J AU - McKenna WJ AD - Institute of Cardiovascular Science University College London London United Kingdom. FAU - Zorzi, Alessandro AU - Zorzi A AD - Department of Cardio-Thoraco-Vascular Sciences and Public Health University of Padua Italy. FAU - Iliceto, Sabino AU - Iliceto S AD - Department of Cardio-Thoraco-Vascular Sciences and Public Health University of Padua Italy. FAU - Basso, Cristina AU - Basso C AD - Department of Cardio-Thoraco-Vascular Sciences and Public Health University of Padua Italy. FAU - Perazzolo Marra, Martina AU - Perazzolo Marra M AD - Department of Cardio-Thoraco-Vascular Sciences and Public Health University of Padua Italy. FAU - Corrado, Domenico AU - Corrado D AD - Department of Cardio-Thoraco-Vascular Sciences and Public Health University of Padua Italy. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200302 PL - England TA - J Am Heart Assoc JT - Journal of the American Heart Association JID - 101580524 RN - 0 (Contrast Media) RN - K2I13DR72L (Gadolinium DTPA) SB - IM MH - Adult MH - Arrhythmogenic Right Ventricular Dysplasia/*diagnosis MH - Cardiomyopathy, Dilated/*diagnosis MH - Cohort Studies MH - Contrast Media MH - Diagnosis, Differential MH - Electrocardiography MH - Female MH - Gadolinium DTPA MH - Humans MH - Magnetic Resonance Imaging MH - Male MH - Middle Aged MH - Sensitivity and Specificity MH - Ventricular Dysfunction, Left/*diagnosis MH - Young Adult PMC - PMC7335583 OTO - NOTNLM OT - arrhythmogenic right ventricular cardiomyopathy OT - cardiac magnetic resonance OT - dilated cardiomyopathy OT - late gadolinium enhancement OT - left ventricular involvement OT - left ventricular phenotype EDAT- 2020/03/03 06:00 MHDA- 2021/03/18 06:00 PMCR- 2020/03/03 CRDT- 2020/03/03 06:00 PHST- 2020/03/03 06:00 [entrez] PHST- 2020/03/03 06:00 [pubmed] PHST- 2021/03/18 06:00 [medline] PHST- 2020/03/03 00:00 [pmc-release] AID - JAH34883 [pii] AID - 10.1161/JAHA.119.014628 [doi] PST - ppublish SO - J Am Heart Assoc. 2020 Mar 3;9(5):e014628. doi: 10.1161/JAHA.119.014628. Epub 2020 Mar 2.