Abstract:
OBJECTIVE:The aim was to correlate the relative abilities of amiodarone, lignocaine, and penticainide in suppressing ventricular tachyarrhythmias in response to coronary artery occlusion with their relative abilities to prolong ventricular functional refractory periods and to reduce intraventricular conduction velocities in anaesthetised open chest rats. METHODS:Functional refractory period was measured with a paired electrical stimulation technique. Intraventricular conduction velocity was monitored using the QRS duration of the ECG. RESULTS:Low doses of these three drugs were selected which protected against ventricular tachyarrhythmias induced by coronary occlusion. These doses prolonged the functional refractory period without increasing QRS duration. High doses of both amiodarone and lignocaine were more effective than low doses in suppressing coronary occlusion induced ventricular tachyarrhythmias. Such high doses greatly prolonged the functional refractory period but prolonged the QRS duration only moderately. In contrast, higher doses of penticainide failed to inhibit coronary occlusion induced ventricular tachyarrhythmias. These higher doses of penticainide prolonged the functional refractory period but prolonged the QRS duration even more markedly. CONCLUSIONS:Among these three drugs an increase in functional refractory period appears to be antiarrhythmic. In contrast, widening of the QRS complex without a corresponding increase in functional refractory period, as produced by penticainide, appears to counteract the antiarrhythmic effect.
journal_name
Cardiovasc Resjournal_title
Cardiovascular researchauthors
Li JY,Northover BJdoi
10.1093/cvr/26.11.1116subject
Has Abstractpub_date
1992-11-01 00:00:00pages
1116-20issue
11eissn
0008-6363issn
1755-3245journal_volume
26pub_type
杂志文章abstract:OBJECTIVE:The pulmonary circulation may contribute to elevated plasma levels of endothelin-1 (ET-1) in congestive heart failure (CHF). The aims of the present study were to determine the mechanisms of increased secretion of ET-1 from the pulmonary circulation in CHF. METHODS:Juvenile pigs were subjected to sham operat...
journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1016/j.cardiores.2004.03.016
更新日期:2004-07-01 00:00:00
abstract::Cardiac hypertrophy occurs in a number of disease states associated with chronic increases in cardiac work load. Although cardiac hypertrophy may initially represent an adaptive response of the myocardium, ultimately, it often progresses to ventricular dilatation and heart failure. Much investigation has focused on th...
journal_title:Cardiovascular research
pub_type: 杂志文章,评审
doi:10.1016/j.cardiores.2004.04.002
更新日期:2004-08-15 00:00:00
abstract::One of the obstacles to a better understanding of the pathogenesis of human cardiomyopathies has been poor availability of heart-tissue samples at early stages of disease development. This has possibly changed by the advent of patient-derived induced pluripotent stem cell (hiPSC) from which cardiomyocytes can be deriv...
journal_title:Cardiovascular research
pub_type: 杂志文章,评审
doi:10.1093/cvr/cvv017
更新日期:2015-04-01 00:00:00
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journal_title:Cardiovascular research
pub_type: 杂志文章,随机对照试验
doi:10.1093/cvr/cvw089
更新日期:2016-07-01 00:00:00
abstract::The effects of both gradual and abrupt coronary occlusion on regional wall function (sonomicrometry) and left ventricular relaxation were studied in the intact dog heart. The ischaemic dysfunction observed in the two interventions as assessed by pressure-length loops showed considerably different patterns. The regiona...
journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/21.7.507
更新日期:1987-07-01 00:00:00
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journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/cvp191
更新日期:2009-10-01 00:00:00
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journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1016/s0008-6363(02)00703-4
更新日期:2003-02-01 00:00:00
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journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/cvp285
更新日期:2010-01-01 00:00:00
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journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1016/s0008-6363(98)00270-3
更新日期:1999-04-01 00:00:00
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journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1016/j.cardiores.2007.07.001
更新日期:2007-11-01 00:00:00
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journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1016/s0008-6363(01)00273-5
更新日期:2001-07-01 00:00:00
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journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1016/j.cardiores.2004.10.038
更新日期:2005-02-01 00:00:00
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journal_title:Cardiovascular research
pub_type: 杂志文章,评审
doi:10.1093/cvr/cvn099
更新日期:2008-07-01 00:00:00
abstract::Congestive heart failure may be deemed the epidemic of cardiology in the 21st century in the industrialized part of the world. Although new therapies improving morbidity and mortality from chronic heart failure have emerged it is likely that there is a growing role for digoxin. Thus, digoxin treatment is known to cont...
journal_title:Cardiovascular research
pub_type: 杂志文章,评审
doi:10.1016/s0008-6363(02)00466-2
更新日期:2002-09-01 00:00:00
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journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/cvs271
更新日期:2012-12-01 00:00:00
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journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1016/s0008-6363(98)00313-7
更新日期:1999-04-01 00:00:00
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journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/cvy257
更新日期:2019-03-15 00:00:00
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journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1016/j.cardiores.2003.12.027
更新日期:2004-04-01 00:00:00
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journal_title:Cardiovascular research
pub_type: 杂志文章,评审
doi:10.1016/s0008-6363(97)00037-0
更新日期:1997-04-01 00:00:00
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journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/27.3.411
更新日期:1993-03-01 00:00:00
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journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1016/s0008-6363(99)00360-0
更新日期:2000-01-14 00:00:00
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journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/21.9.660
更新日期:1987-09-01 00:00:00
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journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1016/s0008-6363(02)00611-9
更新日期:2003-01-01 00:00:00
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journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/cvm059
更新日期:2008-02-01 00:00:00
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journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/cvu124
更新日期:2014-07-01 00:00:00
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journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1016/j.cardiores.2004.03.006
更新日期:2004-07-01 00:00:00
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journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1016/s0008-6363(99)00156-x
更新日期:1999-10-01 00:00:00
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journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/23.11.913
更新日期:1989-11-01 00:00:00
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journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1016/j.cardiores.2005.08.003
更新日期:2006-01-01 00:00:00
abstract::Myocardial lactate content and simultaneous evolution of a lactate arteriovenous gradient associated with incomplete obstruction of the left coronary bed were studied in dog hearts. Samples of blood were taken from a peripheral artery and the coronary sinus; transmural samples of myocardial tissue were obtained from t...
journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/16.10.552
更新日期:1982-10-01 00:00:00