Abstract:
BACKGROUND:The present study was designed to study the progression of heart failure in rabbits with catecholamine-induced cardiomyopathy. METHODS AND RESULTS:We investigated the effects of three repetitive applications (at 16-day intervals) of high-dose epinephrine (first infusion, 5 micrograms/kg/min for 60 minutes; second and third infusions, 4 micrograms/kg/min for 60 minutes) on hemodynamics, echocardiographic parameters, and plasma hormone levels in eight conscious rabbits chronically instrumented with a Doppler flow probe around the proximal abdominal aorta and a catheter in the right atrium. Mean arterial pressure and blood flow velocity, as well as the acceleration of blood flow velocity (df/dt) in the proximal abdominal aorta were progressively reduced, and right atrial pressure was significantly elevated. On echocardiography, progressive left ventricular (LV) dilatation with depressed LV systolic function and an increase in LV mass were observed. Plasma atrial natriuretic peptide level was enhanced approximately fourfold after each epinephrine infusion, with a tendency to return to baseline values. Plasma renin activity (PRA) was increased after the first epinephrine application (3.0 +/- 0.5 to 6.4 +/- 0.9 ng angiotensin I (AI)/mL/h; P < .05), followed by a return to control levels. After the second epinephrine infusion, a significant decrease to 1.0 +/- 0.3 ng AI/mL/h (P < .05) was observed. After the third catecholamine treatment, PRA levels insignificantly increased. Plasma vasopressin level significantly increased from 0.5 +/- 0.2 to 1.1 +/- 0.5 pg/mL (P < .05) after the second epinephrine infusion. CONCLUSION:Repetitive infusions of high doses of epinephrine induce a cardiomyopathy with progressive hemodynamic deterioration, LV dilatation and hypertrophy, depressed systolic function, and different stages of neurohumoral compensation. This model appears to be suitable to study the progression of chronic heart failure by serial measurements in a small animal preparation.
journal_name
J Card Failjournal_title
Journal of cardiac failureauthors
Muders F,Friedrich E,Luchner A,Pfeifer M,Ickenstein G,Hamelbeck B,Riegger GA,Elsner Ddoi
10.1016/s1071-9164(99)90033-7keywords:
subject
Has Abstractpub_date
1999-06-01 00:00:00pages
109-16issue
2eissn
1071-9164issn
1532-8414pii
S1071916499000135journal_volume
5pub_type
杂志文章abstract:BACKGROUND:Recovery of ventricular function during left ventricular assist device (LVAD) support allowing device explantation occurs infrequently. We explored the hypothesis that certain patient profiles are more likely to exhibit LV recovery during LVAD support. METHODS AND RESULTS:A retrospective analysis of data fr...
journal_title:Journal of cardiac failure
pub_type: 杂志文章,多中心研究,随机对照试验
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更新日期:2012-05-01 00:00:00
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journal_title:Journal of cardiac failure
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abstract:BACKGROUND:The beneficial effects of the early use of angiotensin-converting enzyme inhibitors (ACEis) in patients with acute myocardial infarction (MI) are well documented. However, the effects of ACEis in patients with an old MI and preserved cardiac function have not yet been studied. We examined the effects of 12 m...
journal_title:Journal of cardiac failure
pub_type: 临床试验,杂志文章
doi:10.1016/s1071-9164(99)91333-7
更新日期:1999-12-01 00:00:00
abstract:BACKGROUND:Ventricular remodeling often occurs after myocardial infarction, yet the natural history remains unpredictable because of the chronicity of the process and therapeutic interventions involved. We induced cardiac dysfunction in an ovine model via selective microembolization of the circumflex coronary artery (L...
journal_title:Journal of cardiac failure
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journal_title:Journal of cardiac failure
pub_type: 杂志文章
doi:10.1016/s1071-9164(00)00012-9
更新日期:2000-03-01 00:00:00
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journal_title:Journal of cardiac failure
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1999-09-01 00:00:00
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journal_title:Journal of cardiac failure
pub_type: 杂志文章,多中心研究
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更新日期:2015-04-01 00:00:00
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journal_title:Journal of cardiac failure
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journal_title:Journal of cardiac failure
pub_type: 杂志文章
doi:10.1016/s1071-9164(99)90024-6
更新日期:1999-03-01 00:00:00
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journal_title:Journal of cardiac failure
pub_type: 更正并重新发布的文章,杂志文章,随机对照试验
doi:
更新日期:2014-05-01 00:00:00
abstract:BACKGROUND:The abnormalities in coronary hemodynamics in systolic heart failure are frequent. Myocardial oxygen demand and consumption are increased and myocardial perfusion is also impaired, which may result in myocardial ischemia, necrosis, and apoptosis. This is potentially a contributing factor for progressive hear...
journal_title:Journal of cardiac failure
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更新日期:2009-03-01 00:00:00
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journal_title:Journal of cardiac failure
pub_type: 杂志文章
doi:10.1016/j.cardfail.2005.04.007
更新日期:2005-06-01 00:00:00
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journal_title:Journal of cardiac failure
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.cardfail.2011.10.010
更新日期:2012-02-01 00:00:00
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journal_title:Journal of cardiac failure
pub_type: 杂志文章,评审
doi:
更新日期:2000-06-01 00:00:00
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journal_title:Journal of cardiac failure
pub_type: 杂志文章
doi:10.1016/j.cardfail.2007.04.009
更新日期:2007-09-01 00:00:00
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pub_type: 杂志文章,评审
doi:10.1016/j.cardfail.2005.03.002
更新日期:2005-09-01 00:00:00
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journal_title:Journal of cardiac failure
pub_type: 杂志文章
doi:10.1016/j.cardfail.2009.03.003
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journal_title:Journal of cardiac failure
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pub_type: 杂志文章
doi:10.1016/j.cardfail.2009.06.435
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journal_title:Journal of cardiac failure
pub_type: 杂志文章,meta分析,评审
doi:10.1016/j.cardfail.2006.03.003
更新日期:2006-09-01 00:00:00
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journal_title:Journal of cardiac failure
pub_type: 杂志文章
doi:10.1016/j.cardfail.2007.10.019
更新日期:2008-03-01 00:00:00
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journal_title:Journal of cardiac failure
pub_type: 杂志文章
doi:10.1016/j.cardfail.2019.09.011
更新日期:2020-03-01 00:00:00
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journal_title:Journal of cardiac failure
pub_type: 杂志文章,评审
doi:10.1016/j.cardfail.2008.12.014
更新日期:2009-08-01 00:00:00
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journal_title:Journal of cardiac failure
pub_type: 杂志文章
doi:10.1016/j.cardfail.2005.08.001
更新日期:2006-02-01 00:00:00
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pub_type: 杂志文章
doi:10.1054/jcaf.2002.126916
更新日期:2002-08-01 00:00:00
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journal_title:Journal of cardiac failure
pub_type: 杂志文章,评审
doi:10.1016/s1071-9164(97)90018-x
更新日期:1997-09-01 00:00:00
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journal_title:Journal of cardiac failure
pub_type: 杂志文章
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更新日期:2010-11-01 00:00:00