Abstract：
BACKGROUND:The ventriculophasic response (VR) refers to shortening of atrial cycle length during heart block when a QRS complex is interposed between P waves. No formal quantitative definition has heretofore been proposed, nor have its potential clinical correlations been studied. HYPOTHESIS:We hypothesized that VR is present in selected patients who are distinguished by clinical features from those who lack VR. METHODS:Pacing devices were temporarily programmed to VVI mode at 30 ppm as electrocardiogram and intracardiac electrograms were recorded at 50 mm/sec paper speed. We measured the percentage decrease in a P-P interval (A-A interval on the atrial electrogram) containing a QRS, compared to the preceding P-P interval. Left ventricular ejection fraction (LVEF) was measured by echocardiogram. RESULTS:Shortening of P-P interval was observed chiefly when the interposed QRS occurred early in the anticipated P-P interval (as judged by the preceding P-P interval). P-P shortening of 0% to 3% occurred randomly. Defining VR as being a >3% P-P interval shortening when an interposed QRS occurred in the first 60% of the anticipated P-P interval, we found that VR was present in 28 (55%) of our patients. It was quite reproducible, was more common in women (81% vs 37% of men; P = 0.004), and positively correlated with LVEF (r = 0.41, P = 0.004). It did not correlate with age, diabetes, or β-blocker use. CONCLUSIONS:Using our newly derived definition of VR, we found the phenomenon was present in 55% of our patients. It was reproducible and more commonly seen in women and patients with LVEF ≥40%.
journal_name
Clin Cardioljournal_title
Clinical cardiologyauthors
Dadu RT,McPherson CAdoi
10.1002/clc.20998subject
Has Abstractpub_date
2012-01-01 00:00:00pages
21-5issue
1eissn
0160-9289issn
1932-8737journal_volume
35pub_type
杂志文章abstract：:A fulminant psychiatric disturbance, as the sole noncardiac manifestation of digitalis toxicity, emerged in a 85-year-old woman during treatment for congestive heart failure. Described more than a century ago as "digitalis delirium," the disorder is characterized by severe agitation, delusional thinking, assaultive be...
journal_title：Clinical cardiology
pub_type： 杂志文章
doi：10.1002/clc.4960180611
更新日期：1995-06-01 00:00:00
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journal_title：Clinical cardiology
pub_type： 杂志文章,评审
doi：10.1002/clc.4960210411
更新日期：1998-04-01 00:00:00
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journal_title：Clinical cardiology
pub_type： 杂志文章
doi：10.1002/clc.4960130708
更新日期：1990-07-01 00:00:00
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journal_title：Clinical cardiology
pub_type： 杂志文章,评审
doi：10.1002/clc.20445
更新日期：2009-01-01 00:00:00
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journal_title：Clinical cardiology
pub_type： 杂志文章
doi：10.1002/clc.20254
更新日期：2008-09-01 00:00:00
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pub_type： 杂志文章,多中心研究
doi：10.1002/clc.23210
更新日期：2019-08-01 00:00:00
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journal_title：Clinical cardiology
pub_type： 杂志文章
doi：10.1002/clc.22389
更新日期：2015-05-01 00:00:00
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journal_title：Clinical cardiology
pub_type： 杂志文章
doi：10.1002/clc.4960210220
更新日期：1998-02-01 00:00:00
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journal_title：Clinical cardiology
pub_type： 杂志文章
doi：10.1002/clc.4960081111
更新日期：1985-11-01 00:00:00
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journal_title：Clinical cardiology
pub_type： 杂志文章,评审
doi：10.1002/clc.4960180506
更新日期：1995-05-01 00:00:00
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journal_title：Clinical cardiology
pub_type： 杂志文章,评审
doi：10.1002/clc.4960200804
更新日期：1997-08-01 00:00:00
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journal_title：Clinical cardiology
pub_type： 杂志文章,评审
doi：10.1002/clc.4960171408
更新日期：1994-09-01 00:00:00
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journal_title：Clinical cardiology
pub_type： 杂志文章,多中心研究
doi：10.1002/clc.22810
更新日期：2017-12-01 00:00:00
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journal_title：Clinical cardiology
pub_type： 社论
doi：10.1002/clc.4960260402
更新日期：2003-04-01 00:00:00
abstract：:Computer interpretation of electrocardiograms is far from adequate. This paper highlights a particular type of computer error that is merely symbolic of the large number of errors the computer can make. In addition to computer errors in electrocardiography, it is likely that computer interpretation has diminished the ...
journal_title：Clinical cardiology
pub_type： 杂志文章
doi：10.1002/clc.4960190711
更新日期：1996-07-01 00:00:00
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journal_title：Clinical cardiology
pub_type： 临床试验,杂志文章
doi：10.1002/clc.4960220513
更新日期：1999-05-01 00:00:00
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journal_title：Clinical cardiology
pub_type： 杂志文章,评审
doi：10.1002/clc.4960230804
更新日期：2000-08-01 00:00:00
abstract：:Long-acting oral isosorbide dinitrate (ISDN) was replaced by Nitroderm TTS, and the utility of this drug in long-term treatment was assessed in 69 patients with angina pectoris. The frequency of attacks (p < 0.001) and the consumption of sublingual nitrate tablets (p < 0.01) were found to be significantly lower at 2 w...
journal_title：Clinical cardiology
pub_type： 临床试验,杂志文章,多中心研究
doi：10.1002/clc.4960170107
更新日期：1994-01-01 00:00:00
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pub_type： 杂志文章
doi：10.1002/clc.4960261010
更新日期：2003-10-01 00:00:00
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doi：10.1002/clc.4960220306
更新日期：1999-03-01 00:00:00
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journal_title：Clinical cardiology
pub_type： 杂志文章
doi：10.1002/clc.4960190514
更新日期：1996-05-01 00:00:00
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journal_title：Clinical cardiology
pub_type： 杂志文章,评审
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更新日期：1994-02-01 00:00:00
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journal_title：Clinical cardiology
pub_type： 杂志文章
doi：10.1002/clc.4960280109
更新日期：2005-01-01 00:00:00
abstract：:A 33-year-old man was investigated for dyspnea on exertion and the presence of a pansystolic murmur. Physical examination revealed dextrocardia confirmed by chest radiograph, which also showed oligemic right lung field. Subsequent cardiac catheterization revealed secundum atrial septal defect, persistent left sided su...
journal_title：Clinical cardiology
pub_type： 杂志文章
doi：10.1002/clc.4960180713
更新日期：1995-07-01 00:00:00
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journal_title：Clinical cardiology
pub_type： 杂志文章
doi：10.1002/clc.4960151017
更新日期：1992-10-01 00:00:00
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journal_title：Clinical cardiology
pub_type： 杂志文章
doi：10.1002/clc.4960170610
更新日期：1994-06-01 00:00:00
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journal_title：Clinical cardiology
pub_type： 杂志文章
doi：10.1002/clc.4960240716
更新日期：2001-07-01 00:00:00
abstract：BACKGROUND:Females with Ullrich-Turner syndrome (UTS) have typical clinical features such as short stature, ovarian failure, visible dysmorphic stigmata, and abnormalities in different organs such as kidney or heart. HYPOTHESIS:The aim of the present study was to analyze the distribution, prevalence, and relative risk...
journal_title：Clinical cardiology
pub_type： 杂志文章
doi：10.1002/clc.4960280209
更新日期：2005-02-01 00:00:00
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journal_title：Clinical cardiology
pub_type： 杂志文章
doi：10.1002/clc.22937
更新日期：2018-06-01 00:00:00
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journal_title：Clinical cardiology
pub_type： 杂志文章
doi：10.1002/clc.4960150409
更新日期：1992-04-01 00:00:00
