In:
Cardiology, S. Karger AG, Vol. 142, No. 2 ( 2019), p. 109-115
Kurzfassung:
〈 b 〉 〈 i 〉 Background: 〈 /i 〉 〈 /b 〉 The influence of interatrial block (IAB) in the prognosis after an acute ST-segment elevation myocardial infarction (STEMI) is unknown. 〈 b 〉 〈 i 〉 Objectives: 〈 /i 〉 〈 /b 〉 To assess the prognostic impact of IAB after an acute STEMI regarding long-term mortality, development of atrial fibrillation, and stroke. 〈 b 〉 〈 i 〉 Methods: 〈 /i 〉 〈 /b 〉 Registry of 972 consecutive patients with STEMI and sinus rhythm at discharge, with a long-term follow-up (49.6 ± 24.9 months). P wave duration was analyzed using digital calipers, and patients were divided into three groups: normal P wave duration ( & #x3c;120 ms), partial IAB (pIAB) (P wave ≥120 ms and positive in inferior leads), and advanced IAB (aIAB) (P wave ≥120 ms plus biphasic [positive/negative] morphology in inferio r leads). 〈 b 〉 〈 i 〉 Results: 〈 /i 〉 〈 /b 〉 Mean age was 62.6 ± 13.5 years. A total of 708 patients had normal P wave (72.8%), 207 pIAB (21.3%), and 57 aIAB (5.9%). Patients with aIAB were older (mean age 73 years) than the rest (62 years in the other two groups, 〈 i 〉 p 〈 /i 〉 & #x3c; 0.001). They also had a higher rate of hypertension (70 vs. 55% in pIAB and 49% in normal P wave, 〈 i 〉 p 〈 /i 〉 = 0.006) and higher all-cause mortality (26.3 vs. 12.6% in pIAB and 10.3% in normal P wave, 〈 i 〉 p 〈 /i 〉 = 0.001). However, multivariable analysis did not show an independent association between IAB and prognosis. 〈 b 〉 〈 i 〉 Conclusion: 〈 /i 〉 〈 /b 〉 About a quarter of patients discharged in sinus rhythm after an acute STEMI have IAB. Patients with aIAB have a poor prognosis, although this is explained mainly by the association of aIAB with age and other variables.
Materialart:
Online-Ressource
ISSN:
0008-6312
,
1421-9751
Sprache:
Englisch
Verlag:
S. Karger AG
Publikationsdatum:
2019
ZDB Id:
1482041-9
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