Abstract:
BACKGROUND:Diagnosis of acute myocardial infarction (MI) is challenging in pacemaker patients. Little is known about this patient group. METHODS:Patients with MI enrolled in the Swiss national AMIS Plus registry between January 2005 and December 2015 were analyzed. All patients with either paced ventricular rhythm or sinus rhythm with intrinsic ventricular conduction (IVC) were included in this study. Outcomes using crude data and propensity score matching were compared between patients with pacemaker rhythm and patients with IVC. The primary endpoint was in-hospital death. RESULTS:Data from 300 patients with paced rhythm and 27,595 with IVC were analyzed. Patients with pacemaker rhythm were older (78.2y vs 65.4y; p<0.001), had more comorbidities (Charlson Index (CCI)>1: 54.0% vs 21.1%; p<0.001) and a higher rate of heart failure upon presentation (Killip class>2, 11.0% vs 5.9%; p<0.001) compared to patients with IVC. Door to balloon time in patients undergoing acute PCI is markedly delayed in contrast to patients with IVC (280min vs 85min; p<0.001). Consequently, crude mortality in patients with pacemakers was high (11.3% vs 4.6%; p<0.001). However, when analyzed with propensity matching for gender, age, CCI>1 and Killip>2, mortality was similar (11.2% vs 10.5%; p=0.70). CONCLUSION:Pacemaker patients with acute MI represent a high-risk group with doubled crude mortality compared to patients without pacemakers, due to higher age and higher Killip class. Diagnosis is difficult and results in delayed treatment. Treatment algorithms for MI with paced rhythm should possibly be adapted to those used for STEMI or new left bundle branch block. CLINICAL TRIALS REGISTRATION:NCT01305785.
journal_name
Int J Cardioljournal_title
International journal of cardiologyauthors
Bertel N,Witassek F,Puhan M,Erne P,Rickli H,Naegeli B,Pedrazzini G,Stauffer JC,Radovanovic Ddoi
10.1016/j.ijcard.2016.12.047subject
Has Abstractpub_date
2017-03-01 00:00:00pages
604-609eissn
0167-5273issn
1874-1754pii
S0167-5273(16)34533-8journal_volume
230pub_type
临床试验,杂志文章,多中心研究abstract::Simultaneous ST segment elevation and depression recorded during an exercise treadmill test and its correlation with coronary angiogram is a new finding that does not find a place in medical literature. We conclude that in the presence of simultaneous ST segment elevation and ST segment depression during exercise trea...
journal_title:International journal of cardiology
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journal_title:International journal of cardiology
pub_type: 杂志文章,meta分析,评审
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journal_title:International journal of cardiology
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journal_title:International journal of cardiology
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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: 临床试验,杂志文章
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journal_title:International journal of cardiology
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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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journal_title:International journal 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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