Abstract:
PURPOSE:To study the autonomic behavior of the escape rhythm in congenital complete heart block (CCHB), using heart rate variability (HRV). METHODS:A group of 10 asymptomatic patients with CCHB and narrow QRS was studied, 7 females; mean age = 14 +/- 9 years. The following time domain indexes were analyzed from a 24 hour Holter monitoring. The mean of all RR intervals (NN); the standard deviation of the mean (CLV5); the mean of all standard deviations (SDNN); the percent of successive differences longer than 50 ms (pNN50); the shortest cycle (CC) and the longest cycle (CL). The results were compared with a control group, using the Wilcox test for statistical analysis. RESULTS:The results were: NN = 1016 +/- 276 ms in CHB and 725 +/- 121 ms in control (p < 0.01); CLV5 = 184 +/- 97 ms in CHB and 125 +/- 38 ms in control (p = NS); SDNN = 102 +/- 32 ms in CHB and 88 +/- 29 ms in control (p = NS); rMSSD = 113 +/- 69 ms in CHB and 78 +/- 28 ms in control (p = NS); pNN50 = 43 +/- 26% in CHB and 33 +/- 12% in control (p = NS); CC = 582 +/- 129 ms in CHB and 333 +/- 49 ms in control (p = 0.05). CONCLUSION:No statistical difference was noted by comparing HRV indexes in CHB with control subjects, showing that the autonomic behavior of the escape rhythm in CCHB is similar to the sinus node in asymptomatic patients. The differences in NN, CC and CL are probably related to intrinsic properties of each command.
journal_name
Arq Bras Cardioljournal_title
Arquivos brasileiros de cardiologiaauthors
Boghossian SH,Maia IG,Seidler G,Costa AM,Cruz Filho F,Alves PAsubject
Has Abstractpub_date
1994-06-01 00:00:00pages
399-401issue
6eissn
0066-782Xissn
1678-4170journal_volume
62pub_type
杂志文章abstract::A 79-year-old woman developed myocardial infarction associated with acute pulmonary edema. The electrocardiogram recorded QRS complex of QS type in V1 with upper ST extending from V3R to V6R. The polarity of the P wave in bipolar leads was positive, so compatible with dextrorotation complicated by myocardial infarctio...
journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章,评审
doi:
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journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章,多中心研究
doi:
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journal_title:Arquivos brasileiros de cardiologia
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journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:/S0066-782X2005002400003
更新日期:2005-10-01 00:00:00
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journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:
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journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章,评审
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journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章,评审
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pub_type: 杂志文章,meta分析,评审
doi:10.5935/abc.20140172
更新日期:2015-01-01 00:00:00
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journal_title:Arquivos brasileiros de cardiologia
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journal_title:Arquivos brasileiros de cardiologia
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doi:
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journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:
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journal_title:Arquivos brasileiros de cardiologia
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doi:
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journal_title:Arquivos brasileiros de cardiologia
pub_type: 杂志文章
doi:
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