| Sustained cavity obliteration and apical aneurysm formation in apical hypertrophic cardiomyopathy. | |
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MedLine Citation:
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PMID: 12875766 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVES: In patients with apical hypertrophic cardiomyopathy (ApHCM), we estimated the severity of cavity obliteration (CO) in the apical potion of the left ventricle and correlated it with various clinical findings including apical aneurysm. BACKGROUND: Apical hypertrophic cardiomyopathy sometimes develops apical aneurysm. The apical CO is often exhibited in ApHCM along with apical hypertrophy and ischemia. It remains unclear, however, how the CO and others are related to aneurysm. METHODS: In 46 patients with ApHCM, we measured CO time on M-mode echocardiography and corrected it by the R-R interval (cCOT). We divided the 46 patients into the following groups: 17 with cCOT <or=200 ms (no/mild CO group); 18 with cCOT >200 to <or=350 ms (moderate CO group); and 11 with cCOT >350 ms (severe CO group). We then compared apical aneurysm, hypertrophy, ischemia, QT interval, and the like between the three groups. RESULTS: The severe CO group exclusively comprised 11 patients having apical aneurysm and paradoxic jet flow. Of the 11 patients, 10 exhibited irreversible defects on exercise single photon emission computed tomography with thallium-201. All with moderate CO showed reversible defects, and none with no/mild CO showed any defects. Left ventricular hypertrophy and the corrected QT interval (QTc) were largest in the severe CO group. There were high correlations between the cCOT, hypertrophy, ischemia, and QTc. Of the 11 patients with severe CO, 6 had nonsustained ventricular tachycardia and 1 had mural thrombus. CONCLUSIONS: In ApHCM, sustained CO is an important pathophysiologic condition as well as hypertrophy, ischemia, and prolonged QTc, which are considered jointly related to the development of aneurysm through interactions. |
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Authors:
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Kinya Matsubara; Takashi Nakamura; Toshiro Kuribayashi; Akihiro Azuma; Masao Nakagawa |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of the American College of Cardiology Volume: 42 ISSN: 0735-1097 ISO Abbreviation: J. Am. Coll. Cardiol. Publication Date: 2003 Jul |
Date Detail:
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Created Date: 2003-07-23 Completed Date: 2003-08-20 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 8301365 Medline TA: J Am Coll Cardiol Country: United States |
Other Details:
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Languages: eng Pagination: 288-95 Citation Subset: AIM; IM |
Affiliation:
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Department of Medicine, Kyoto Municipal Hospital, Kyoto, Japan. mtbrkydy@hera.eonet.ne.jp |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Cardiomyopathy, Hypertrophic / complications*, diagnosis*, physiopathology Diastole Echocardiography / methods* Electrocardiography Exercise Test Female Heart Aneurysm / classification, diagnosis*, etiology*, physiopathology Heart Catheterization Humans Hypertrophy, Left Ventricular / complications*, diagnosis*, physiopathology Long QT Syndrome / classification, diagnosis, etiology, physiopathology Male Middle Aged Myocardial Ischemia / classification, diagnosis, etiology, physiopathology Predictive Value of Tests Severity of Illness Index* Thallium Radioisotopes / diagnostic use Tomography, Emission-Computed, Single-Photon |
| Chemical | |
Reg. No./Substance:
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0/Thallium Radioisotopes |
| Comments/Corrections | |
Erratum In:
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J Am Coll Cardiol. 2003 Oct 1;42(7):1338 |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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