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Iodine-123-metaiodobenzylguanidine imaging can predict future cardiac events in heart failure patients with preserved ejection fraction.
MedLine Citation:
PMID:  20824398     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
OBJECTIVE: Iodine-123-metaiodobenzylguanidine ((123)I-MIBG) has been used to assess the function of the cardiac sympathetic nervous system in patients with chronic heart failure (HF). The usefulness of (123)I-MIBG imaging for evaluating patients with heart failure with preserved ejection fraction (HFPEF) has not been established.
METHODS: We performed (123)I-MIBG scintigraphy and echocardiography and measured the plasma brain natriuretic peptide (BNP) levels of 117 consecutive HF patients (64 men, mean age 66 ± 14 years) with a left ventricular ejection fraction (LVEF) of ≥50% who were admitted to our hospital. Patients were divided into 2 groups according to the New York Heart Association (NYHA) functional class.
RESULTS: The (123)I-MIBG delayed heart-to-mediastinum (H/M) ratio was significantly lower, and the washout rate (WR) was higher in patients with HFPEF with advanced NYHA functional class (NYHA functional class I and II vs. III: 1.90 ± 0.34 vs. 1.49 ± 0.32, p < 0.0001; 25.9 ± 13.4 vs. 46.9 ± 16.3%, p < 0.0001, respectively). On the other hand, the (123)I-MIBG WR was not correlated with LVEF and had a weak correlation with plasma BNP levels (R = 0.207, p = 0.0346). Moreover, patients with a high (123)I-MIBG WR showed a poor clinical outcome (p = 0.0033).
CONCLUSIONS: (123)I-MIBG imaging provides independent prognostic information in patients with HFPEF.
Authors:
Shigehiko Katoh; Tetsuro Shishido; Daisuke Kutsuzawa; Takanori Arimoto; Shunsuke Netsu; Akira Funayama; Mitsunori Ishino; Takeshi Niizeki; Satoshi Nishiyama; Hiroki Takahashi; Takehiko Miyashita; Takuya Miyamoto; Joji Nitobe; Tetsu Watanabe; Isao Kubota
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-09-08
Journal Detail:
Title:  Annals of nuclear medicine     Volume:  24     ISSN:  1864-6433     ISO Abbreviation:  Ann Nucl Med     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-11-22     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8913398     Medline TA:  Ann Nucl Med     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  679-86     Citation Subset:  IM    
Affiliation:
Department of Cardiology, Pulmonology, and Nephrology, Yamagata University School of Medicine, 2-2-2 Iida-Nishi, Yamagata, Japan.
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