Abstract:
:The imbalance of the autonomic nervous function has been shown to contribute to the genesis of ventricular arrhythmias. Power spectral analysis of components of heart rate variability has the potential to quantify the cardiac autonomic tone during ambulatory electrocardiographic recording. We analysed the power spectral components of total power, very low frequency power (0.0033-0.04 Hz), low frequency (0.04-0.15 Hz) and high frequency (0.15-0.40 Hz) power in 12 consecutive patients accompanied with 27 episodes of ventricular tachycardia in acute myocardial infarction. The spectral areas were measured in 5-min periods preceding the onset of ventricular tachycardias. The total power of heart rate variability increased progressively before the onset of ventricular tachycardia episodes (P < 0.05). The increase of total power was mainly due to higher, very low frequency power at the onset rather than before the onset of ventricular tachycardia (P < 0.05). The trend towards adrenergic predominance at the onset of ventricular tachycardia was observed by an increase of average heart rate (P < 0.05) without concomitant increase in high frequency power. Thus, the occurrence of ventricular tachycardia is associated with changes in the power spectrum of heart rate variability suggesting alterations in autonomic tone at the onset of ventricular tachycardia in acute myocardial infarction.
journal_name
Int J Cardioljournal_title
International journal of cardiologyauthors
Valkama JO,Huikuri HV,Airaksinen KE,Linnaluoto MK,Takkunen JTdoi
10.1016/0167-5273(93)90177-isubject
Has Abstractpub_date
1993-02-01 00:00:00pages
177-82issue
2eissn
0167-5273issn
1874-1754pii
0167-5273(93)90177-Ijournal_volume
38pub_type
杂志文章abstract:BACKGROUND:Recent studies showed that J-waves are associated with vulnerability to ventricular fibrillation. Recently we reported the association between false tendons (FTs) and J-waves in a retrospective study. METHODS AND RESULTS:We prospectively studied 50 young healthy men (mean age 24.6±2.7 years). FTs were detec...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2014.01.101
更新日期:2014-03-15 00:00:00
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journal_title:International journal of cardiology
pub_type: 信件
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pub_type: 杂志文章,评审
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journal_title:International journal of cardiology
pub_type: 杂志文章,评审
doi:10.1016/j.ijcard.2014.02.037
更新日期:2014-04-15 00:00:00
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journal_title:International journal of cardiology
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journal_title:International journal of cardiology
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pub_type: 杂志文章
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journal_title:International journal of cardiology
pub_type: 临床试验,杂志文章
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journal_title:International journal of cardiology
pub_type: 杂志文章
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更新日期:2007-01-31 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章,评审
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更新日期:2017-01-15 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章
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更新日期:2016-10-15 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章
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更新日期:2017-03-15 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2016.08.233
更新日期:2016-11-15 00:00:00
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journal_title:International journal of cardiology
pub_type: 信件
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更新日期:2007-03-20 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2015.10.078
更新日期:2016-01-15 00:00:00
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journal_title:International journal of cardiology
pub_type: 临床试验,杂志文章
doi:10.1016/0167-5273(92)90078-h
更新日期:1992-01-01 00:00:00
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journal_title:International journal of cardiology
pub_type: 评论,信件
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更新日期:2009-05-29 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章,多中心研究
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更新日期:2015-12-15 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章
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更新日期:2016-11-01 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2009.01.052
更新日期:2010-08-06 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2012.07.028
更新日期:2013-09-10 00:00:00
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journal_title:International journal of cardiology
pub_type: 信件
doi:10.1016/j.ijcard.2006.07.063
更新日期:2007-04-12 00:00:00
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journal_title:International journal of cardiology
pub_type: 信件
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更新日期:2009-05-15 00:00:00
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journal_title:International journal of cardiology
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ijcard.2012.12.053
更新日期:2013-10-03 00:00:00
abstract::Background - Variants within the alpha-tropomyosin gene (TPM1) cause dominantly inherited cardiomyopathies, including dilated (DCM), hypertrophic (HCM) and restrictive (RCM) cardiomyopathy. Here we investigated whether TPM1 variants observed in DCM and HCM patients affect cardiomyocyte physiology differently. Methods ...
journal_title:International journal of cardiology
pub_type: 杂志文章
doi:10.1016/j.ijcard.2020.08.101
更新日期:2021-01-15 00:00:00
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journal_title:International journal of cardiology
pub_type: 信件
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更新日期:2008-09-26 00:00:00
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journal_title:International journal 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:2004-03-01 00:00:00
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journal_title:International journal of cardiology
pub_type: 临床试验,杂志文章
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更新日期:2013-09-30 00:00:00
abstract::There exists some controversy over how to treat patients of pulmonary atresia with intact ventricular septum: transcatheter or open chest. Each has certain drawbacks. We describe a novel hybrid approach which has the advantages of both methods. ...
journal_title:International journal of cardiology
pub_type: 信件
doi:10.1016/j.ijcard.2009.03.083
更新日期:2010-10-29 00:00:00