PURPOSE: Although the benefits of treatment with angiotensin-converting enzyme (ACE) inhibitors and beta-blockers are well known, no method has as yet been established to predict the efficacy of drug therapy. This study tested whether cardiac 123I-metaiodobenzylguanidine (MIBG) activity is of prognostic value and can predict the improvement in heart failure patients resulting from treatment with ACE inhibitors and/or beta-blockers. METHODS: Following quantification of the heart-to-mediastinum ratio (HMR) of MIBG activity, 88 patients with heart failure who were treated with ACE inhibitors and/or beta-blockers (treated group) and 79 patients with heart failure who were treated conventionally without the aforementioned agents, and who served as controls, were followed up for 43 months with a primary endpoint of cardiac death. RESULTS: The treated group had a significantly lower prevalence of cardiac death and a significantly lower mortality at 5 years compared with the control group (15% vs 37% and 21% vs 42%, p<0.05, respectively). Multivariate analysis revealed that significant predictors were HMR, age, nitrate use and ventricular tachycardia for the treated group, and HMR, nitrate use and NYHA class for the control group. The drug treatment significantly reduced mortality from 36% to 12% when HMR was 1.53 or more and from 53% to 37% when HMR was less than 1.53. The reduction in risk of mortality within 5 years in patients without a severe MIBG defect (67%) was twice that in patients with such a defect (32%) (p<0.05). CONCLUSION: The reduction in mortality risk achieved by using ACE inhibitors and/or beta-blockers is associated with the severity of impairment of cardiac MIBG uptake. Cardiac MIBG activity can consequently be of long-term prognostic value in predicting the effectiveness of such treatment in patients with heart failure.
PURPOSE: Although the benefits of treatment with angiotensin-converting enzyme (ACE) inhibitors and beta-blockers are well known, no method has as yet been established to predict the efficacy of drug therapy. This study tested whether cardiac 123I-metaiodobenzylguanidine (MIBG) activity is of prognostic value and can predict the improvement in heart failurepatients resulting from treatment with ACE inhibitors and/or beta-blockers. METHODS: Following quantification of the heart-to-mediastinum ratio (HMR) of MIBG activity, 88 patients with heart failure who were treated with ACE inhibitors and/or beta-blockers (treated group) and 79 patients with heart failure who were treated conventionally without the aforementioned agents, and who served as controls, were followed up for 43 months with a primary endpoint of cardiac death. RESULTS: The treated group had a significantly lower prevalence of cardiac death and a significantly lower mortality at 5 years compared with the control group (15% vs 37% and 21% vs 42%, p<0.05, respectively). Multivariate analysis revealed that significant predictors were HMR, age, nitrate use and ventricular tachycardia for the treated group, and HMR, nitrate use and NYHA class for the control group. The drug treatment significantly reduced mortality from 36% to 12% when HMR was 1.53 or more and from 53% to 37% when HMR was less than 1.53. The reduction in risk of mortality within 5 years in patients without a severe MIBG defect (67%) was twice that in patients with such a defect (32%) (p<0.05). CONCLUSION: The reduction in mortality risk achieved by using ACE inhibitors and/or beta-blockers is associated with the severity of impairment of cardiac MIBG uptake. Cardiac MIBG activity can consequently be of long-term prognostic value in predicting the effectiveness of such treatment in patients with heart failure.
Authors: G Eisenhofer; P Friberg; B Rundqvist; A A Quyyumi; G Lambert; D M Kaye; I J Kopin; D S Goldstein; M D Esler Journal: Circulation Date: 1996-05-01 Impact factor: 29.690
Authors: T Nakata; K Miyamoto; A Doi; H Sasao; T Wakabayashi; H Kobayashi; K Tsuchihashi; K Shimamoto Journal: J Nucl Cardiol Date: 1998 Nov-Dec Impact factor: 5.952
Authors: Rishi Arora; Kevin J Ferrick; Tomoaki Nakata; Robert C Kaplan; Michael Rozengarten; Farhana Latif; Kaman Ng; Vanessa Marcano; Sherman Heller; John D Fisher; Mark I Travin Journal: J Nucl Cardiol Date: 2003 Mar-Apr Impact factor: 5.952
Authors: A Cohen-Solal; Y Esanu; D Logeart; F Pessione; C Dubois; G Dreyfus; R Gourgon; P Merlet Journal: J Am Coll Cardiol Date: 1999-03 Impact factor: 24.094
Authors: A I McGhie; J R Corbett; M S Akers; P Kulkarni; M N Sills; M Kremers; L M Buja; M Durant-Reville; R W Parkey; J T Willerson Journal: Am J Cardiol Date: 1991-02-01 Impact factor: 2.778
Authors: Ji Chen; Russell D Folks; Liudmila Verdes; Daya N Manatunga; Arnold F Jacobson; Ernest V Garcia Journal: J Nucl Cardiol Date: 2011-12-07 Impact factor: 5.952
Authors: Lars Stegger; Klaus Schäfers; Klaus Kopka; Stefan Wagner; Sven Hermann; Peter Kies; Marilyn Law; Otmar Schober; Michael Schäfers Journal: Eur Radiol Date: 2007-01-06 Impact factor: 5.315
Authors: Maureen M Henneman; Frank M Bengel; Ernst E van der Wall; Juhani Knuuti; Jeroen J Bax Journal: J Nucl Cardiol Date: 2008-04-16 Impact factor: 5.952
Authors: Hein J Verberne; G Aernout Somsen; Pavol Povinec; Berthe L F van Eck-Smit; Arnold F Jacobson Journal: Eur J Nucl Med Mol Imaging Date: 2009-03-04 Impact factor: 9.236