2011年2月
Biological Variation of Brain Natriuretic Peptide and Cardiac Events in Stable Outpatients With Nonischemic Chronic Heart Failure
CIRCULATION JOURNAL
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- 巻
- 75
- 号
- 2
- 開始ページ
- 341
- 終了ページ
- 347
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1253/circj.CJ-10-0368
- 出版者・発行元
- JAPANESE CIRCULATION SOC
Background: To evaluate the biological variation and prognostic value of brain natriuretic peptide (BNP) for stable outpatients with nonischemic chronic heart failure (NICHF).
Methods and Results: Biological variation in BNP was evaluated using an automated assay system in 140 outpatients with NICHF. The stable clinical condition during the 2-month study period was defined as unchanged NYHA and unchanged left ventricular ejection fraction; therefore, 7 patients were excluded during the 2 months. Thereafter, 133 patients were prospectively followed and the relationship between cardiac events and the plasma BNP concentrations (at baseline and after 2 months) were evaluated as well as the changes in BNP. The biological variation in BNP (2-month interval) was calculated as 22.3%. During a mean follow-up period of 42 months, 26 patients had cardiac events. According to stepwise multivariate analyses, plasma BNP after 2 months (P=0.0002) and % change in BNP (P=0.0067) were significant independent predictors of cardiac events.
Conclusions: These findings indicated that a combination of the absolute value of BNP after 2 months and % increase in BNP (2-month interval) is useful for predicting cardiac events in stable outpatients with NICHF. (Circ J 2011; 75: 341-347)
Methods and Results: Biological variation in BNP was evaluated using an automated assay system in 140 outpatients with NICHF. The stable clinical condition during the 2-month study period was defined as unchanged NYHA and unchanged left ventricular ejection fraction; therefore, 7 patients were excluded during the 2 months. Thereafter, 133 patients were prospectively followed and the relationship between cardiac events and the plasma BNP concentrations (at baseline and after 2 months) were evaluated as well as the changes in BNP. The biological variation in BNP (2-month interval) was calculated as 22.3%. During a mean follow-up period of 42 months, 26 patients had cardiac events. According to stepwise multivariate analyses, plasma BNP after 2 months (P=0.0002) and % change in BNP (P=0.0067) were significant independent predictors of cardiac events.
Conclusions: These findings indicated that a combination of the absolute value of BNP after 2 months and % increase in BNP (2-month interval) is useful for predicting cardiac events in stable outpatients with NICHF. (Circ J 2011; 75: 341-347)
- リンク情報
- ID情報
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- DOI : 10.1253/circj.CJ-10-0368
- ISSN : 1346-9843
- eISSN : 1347-4820
- Web of Science ID : WOS:000286698200020