PMID- 26077330 OWN - NLM STAT- MEDLINE DCOM- 20161221 LR - 20181113 IS - 2047-2412 (Electronic) IS - 2047-2404 (Print) IS - 2047-2404 (Linking) VI - 17 IP - 3 DP - 2016 Mar TI - Late gadolinium enhancement confined to the right ventricular insertion points in hypertrophic cardiomyopathy: an intermediate stage phenotype? PG - 293-300 LID - 10.1093/ehjci/jev154 [doi] AB - AIMS: To investigate whether hypertrophic cardiomyopathy (HCM) patients with late gadolinium enhancement (LGE) confined to the right ventricular insertion points (RVIP) differ phenotypically from patients without LGE or intramural LGE in the left ventricle (LV). METHODS AND RESULTS: Sixty-two HCM patients underwent cardiac magnetic resonance for quantification of LGE (% LV mass) and were classified as group (i) no-LGE (n = 18), group (ii) LGE-RVIP (n = 19), and group (iii) intramural LGE (n = 25). All patients also underwent vasodilator N-13 ammonia PET to quantify myocardial blood flow (MBF) and myocardial flow reserve (MFR), and echocardiography to measure longitudinal LV strain. LGE extent (17 +/- 11% vs. 4 +/- 4% vs. 0%; P < 0.001) and LV thickness (21.7 +/- 3.4 vs. 18.8 +/- 3.9 vs. 16.3 +/- 2.8 mm; P < 0.001) were significantly greater in group 3, intermediate in group 2, and lower in group 1. In contrast, stress MBF (1.62 +/- 0.44 vs. 1.90 +/- 0.37 vs. 2.22 +/- 0.48 mL/min/g; P < 0.001); MFR (1.92 +/- 0.47 vs. 2.15 +/- 0.52 vs. 2.71 +/- 0.52; P < 0.001), and longitudinal LV strain (-11.4 +/- 3.8 vs. -12.6 +/- 3.2 vs. -14.4 +/- 4.1%; P = 0.04) were lower in group 3, intermediate in group 2, and higher in group 1. CONCLUSIONS: From an imaging viewpoint, patients with LGE confined to only the RVIP appear to represent an intermediate-stage phenotype between patients with no LGE and intramural LGE in the LV. CI - Published on behalf of the European Society of Cardiology. All rights reserved. (c) The Author 2015. For permissions please email: journals.permissions@oup.com. FAU - Bravo, Paco E AU - Bravo PE AD - Department of Cardiology, University of Washington, 1959 NE Pacific Street, PO Box 356422, Seattle, WA 98195, USA Johns Hopkins Medical Institutions, Baltimore, MD, USA pbravo@uw.edu. FAU - Luo, Hong-Chang AU - Luo HC AD - Johns Hopkins Medical Institutions, Baltimore, MD, USA. FAU - Pozios, Iraklis AU - Pozios I AD - Johns Hopkins Medical Institutions, Baltimore, MD, USA. FAU - Zimmerman, Stefan L AU - Zimmerman SL AD - Johns Hopkins Medical Institutions, Baltimore, MD, USA. FAU - Corona-Villalobos, Celia Pamela AU - Corona-Villalobos CP AD - Johns Hopkins Medical Institutions, Baltimore, MD, USA. FAU - Sorensen, Lars AU - Sorensen L AD - Johns Hopkins Medical Institutions, Baltimore, MD, USA. FAU - Kamel, Ihab R AU - Kamel IR AD - Johns Hopkins Medical Institutions, Baltimore, MD, USA. FAU - Bluemke, David A AU - Bluemke DA AD - National Institutes of Health, Bethesda, MD, USA. FAU - Wahl, Richard L AU - Wahl RL AD - Johns Hopkins Medical Institutions, Baltimore, MD, USA. FAU - Abraham, M Roselle AU - Abraham MR AD - Johns Hopkins Medical Institutions, Baltimore, MD, USA. FAU - Abraham, Theodore P AU - Abraham TP AD - Johns Hopkins Medical Institutions, Baltimore, MD, USA. LA - eng GR - HL098046/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20150614 PL - England TA - Eur Heart J Cardiovasc Imaging JT - European heart journal. Cardiovascular Imaging JID - 101573788 RN - 0 (Contrast Media) RN - K2I13DR72L (Gadolinium DTPA) SB - IM MH - Cardiac-Gated Imaging Techniques MH - Cardiomyopathy, Hypertrophic/*diagnostic imaging/*physiopathology MH - Contrast Media MH - Coronary Circulation MH - Echocardiography MH - Female MH - Gadolinium DTPA MH - Heart Ventricles/*diagnostic imaging/*physiopathology MH - Humans MH - Image Interpretation, Computer-Assisted MH - Magnetic Resonance Imaging MH - Male MH - Middle Aged MH - Phenotype MH - Positron-Emission Tomography PMC - PMC4750506 OTO - NOTNLM OT - CMR OT - LGE OT - RV insertion points EDAT- 2015/06/17 06:00 MHDA- 2016/12/22 06:00 PMCR- 2017/03/01 CRDT- 2015/06/17 06:00 PHST- 2015/02/09 00:00 [received] PHST- 2015/05/23 00:00 [accepted] PHST- 2017/03/01 00:00 [pmc-release] PHST- 2015/06/17 06:00 [entrez] PHST- 2015/06/17 06:00 [pubmed] PHST- 2016/12/22 06:00 [medline] AID - jev154 [pii] AID - 10.1093/ehjci/jev154 [doi] PST - ppublish SO - Eur Heart J Cardiovasc Imaging. 2016 Mar;17(3):293-300. doi: 10.1093/ehjci/jev154. Epub 2015 Jun 14.