Abstract:
:The symptoms of chronic heart failure (CHF) are predominantly shortness of breath and fatigue during exercise and reduced exercise capacity. Disturbances of central hemodynamic function are no longer considered to be the major determinants of exercise capacity. The two symptoms of fatigue and breathlessness are often considered in isolation. A pulmonary abnormality is usually considered to be the cause of abnormal ventilation, and increased dead space ventilation has come to be accepted as a major cause of the increased ventilation relative to carbon dioxide production seen in CHF. Rather than decreased skeletal muscle perfusion, an intrinsic muscle abnormality is considered to be responsible for fatigue. Another abnormality seen in CHF is persistent sympathetic nervous system activation, which is difficult to explain on the basis of baroreflex activation. There is increasing evidence for the importance of skeletal muscle ergoreceptors or metaboreceptors in CHF. These receptors are sensitive to work performed, and activation results in increased ventilation and sympathetic activation. The ergoreflex appears to be greatly enhanced in CHF. We put forward the "muscle hypothesis" as an explanation for many of the pathophysiologic events in CHF. Impaired skeletal muscle function results in ergoreflex activation. In turn, this causes increased ventilation, thus linking the symptoms of breathlessness and fatigue. Furthermore, ergoreflex stimulation may be responsible for persistent sympathetic activation.
journal_name
J Am Coll Cardioljournal_title
Journal of the American College of Cardiologyauthors
Clark AL,Poole-Wilson PA,Coats AJdoi
10.1016/S0735-1097(96)00323-3subject
Has Abstractpub_date
1996-11-01 00:00:00pages
1092-102issue
5eissn
0735-1097issn
1558-3597pii
S0735-1097(96)00323-3journal_volume
28pub_type
杂志文章,评审abstract:OBJECTIVES:We sought to assess the validity of first-year intravascular ultrasound (IVUS) data as a surrogate marker for long-term outcome after heart transplantation. BACKGROUND:Cardiac allograft vasculopathy (CAV) is a major impediment to long-term graft survival. Intravascular ultrasound is more sensitive than coro...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章,多中心研究
doi:10.1016/j.jacc.2005.02.035
更新日期:2005-05-03 00:00:00
abstract:OBJECTIVES:We sought to develop and validate a definition of coronary microvascular dysfunction in women with chest pain and no significant epicardial obstruction based on adenosine-induced changes in coronary flow velocity (i.e., coronary velocity reserve). BACKGROUND:Chest pain is frequently not caused by fixed obst...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/s0735-1097(99)00072-8
更新日期:1999-05-01 00:00:00
abstract:OBJECTIVES:The purpose of this study was to examine the relationships among B-type natriuretic peptide (BNP) levels within the diagnostic range, perceived congestive heart failure (CHF) severity, clinical decision making, and outcomes of the CHF patients presenting to emergency department (ED). BACKGROUND:Since BNP co...
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pub_type: 临床试验,杂志文章,多中心研究
doi:10.1016/j.jacc.2004.06.015
更新日期:2004-09-15 00:00:00
abstract:OBJECTIVES:The aim of this study was to assess and validate 2-dimensional (2D) strain for the detection of ischemia during dobutamine stress echocardiography (DSE). BACKGROUND:Evaluation of abnormalities of left ventricular (LV) function from wall thickening during DSE is unsatisfactory and requires a high level of ex...
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pub_type: 杂志文章
doi:10.1016/j.jacc.2007.07.088
更新日期:2008-01-15 00:00:00
abstract:BACKGROUND:Personalized external aortic root support (PEARS) was introduced in 2004 for prevention of aortic root dilatation in Marfan patients. The individual's aortic root is replicated by 3-dimensional printing. A polymer mesh sleeve is manufactured, which is implanted with the aim to support and stabilize the aorti...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/j.jacc.2018.06.053
更新日期:2018-09-04 00:00:00
abstract:OBJECTIVES:This was a prospective, randomized, controlled study designed to determine the effect of resistance exercise training on bone metabolism in heart transplant recipients. BACKGROUND:Osteoporosis frequently complicates heart transplantation. No preventative strategy is generally accepted for glucocorticoid-ind...
journal_title:Journal of the American College of Cardiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/s0735-1097(96)00347-6
更新日期:1996-11-15 00:00:00
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pub_type: 杂志文章
doi:10.1016/0735-1097(94)90592-4
更新日期:1994-04-01 00:00:00
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pub_type: 杂志文章
doi:10.1016/s0735-1097(02)01860-0
更新日期:2002-06-05 00:00:00
abstract::Clinical and necropsy findings are described in 56 patients with mitral valve prolapse: 15 patients, aged 16 to 69 years (mean 39), died suddenly and mitral valve prolapse was the only cardiac condition found at necropsy (hereafter called isolated mitral valve prolapse); the remaining 41 patients had other conditions ...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/0735-1097(91)90875-a
更新日期:1991-03-15 00:00:00
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pub_type: 杂志文章
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更新日期:1984-12-01 00:00:00
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pub_type: 杂志文章
doi:10.1016/0735-1097(88)90172-6
更新日期:1988-01-01 00:00:00
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journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章,评审
doi:10.1016/j.jacc.2004.08.070
更新日期:2005-09-20 00:00:00
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journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章,评审
doi:10.1016/j.jacc.2004.03.063
更新日期:2004-08-04 00:00:00
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journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/0735-1097(88)90403-2
更新日期:1988-08-01 00:00:00
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pub_type: 杂志文章
doi:10.1016/j.jacc.2007.10.048
更新日期:2008-03-04 00:00:00
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journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/j.jacc.2004.04.058
更新日期:2004-09-15 00:00:00
abstract:BACKGROUND:Reproductive factors reflective of endogenous sex hormone exposure might have an effect on cardiac remodeling and the development of heart failure (HF). OBJECTIVES:This study examined the association between key reproductive factors and the incidence of HF. METHODS:Women from a cohort of the Women's Health...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/j.jacc.2017.03.557
更新日期:2017-05-23 00:00:00
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journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章,评审
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更新日期:2017-01-17 00:00:00
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pub_type: 杂志文章
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更新日期:1999-11-15 00:00:00
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journal_title:Journal of the American College of Cardiology
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
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更新日期:1998-11-01 00:00:00
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pub_type: 杂志文章
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更新日期:2001-03-15 00:00:00
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journal_title:Journal of the American College of Cardiology
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:2000-08-01 00:00:00
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pub_type: 杂志文章
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更新日期:1999-04-01 00:00:00
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pub_type: 杂志文章
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更新日期:1995-01-01 00:00:00
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journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
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更新日期:1987-07-01 00:00:00
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pub_type: 杂志文章
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更新日期:1998-09-01 00:00:00
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journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章,评审
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更新日期:1989-05-01 00:00:00
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journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/j.jacc.2004.10.073
更新日期:2005-04-05 00:00:00
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pub_type: 杂志文章
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更新日期:1990-08-01 00:00:00