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Medicina is published by MDPI from Volume 54 Issue 1 (2018). Articles in this Issue were published by another publisher in Open Access under a CC-BY (or CC-BY-NC-ND) licence. Articles are hosted by MDPI on mdpi.com as a courtesy and upon agreement with Lithuanian Medical Association, Lithuanian University of Health Sciences, and Vilnius University.
Open AccessArticle

Changes of electrocardiographic and echocardiographic data after early and late mechanical recanalization of infarct-related artery with and without stent implantation

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Institute of Cardiology
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Department of Internal Medicine
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Department of Intensive Care, Kaunas University of Medicine, Lithuaniaa
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Author to whom correspondence should be addressed.
Medicina 2007, 43(9), 703; https://doi.org/10.3390/medicina43090091
Received: 6 December 2006 / Accepted: 3 September 2007 / Published: 8 September 2007
Objective. To show differences in the changes of electrocardiographic and echocardiographic data after early and late mechanical recanalization of infarct related artery with and without stent implantation and to assess the value of QRS score in the follow-up period.
Material and methods
. A total of 248 consecutive patients were divided into these groups: early angioplasty (≤24 hours) without stents (n=114) or with stents (n=6) and later (>24 hours) angioplasty without stents (n=114) or with stents (n=14). The changes in QRS score and echocardiographic left ventricular ejection fraction during the hospital and 3-month follow-up periods were compared between the groups.
Results
. QRS score did not increase in a hospital in early or late angioplasty with stents groups, while in the groups without stents especially of early angioplasty increased (2.6±2.5 vs. 3.6±2.4, P=0.001). Left ventricular ejection fraction increased after 3 months only in early angioplasty groups especially with stents (30.0±3.5 vs. 38.4±5.2, P=0.008), but there were no significant differences between the QRS score at discharge and after 3 months (5.4±4.3 vs. 5.0±1.9).
Conclusions
. Myocardial injury did not increase in a hospital in the cases of early or late angioplasty with stents, while in the cases without stents increased. Left ventricular ejection fraction increased after 3 months only in the cases of early angioplasty especially with the stent implantation, but the QRS score showed no differences, so the QRS score may be not predictive of improvement in ejection fraction at follow-up.
Keywords: electrocardiogram; myocardial infarction; coronary angioplasty electrocardiogram; myocardial infarction; coronary angioplasty
MDPI and ACS Style

Kalinauskienė, E.; Naudžiūnas, A.; Navickas, R.; Jankauskienė, L.; Pilvinis, V.; Janavičius, A.; Grinius, V.; Unikas, R. Changes of electrocardiographic and echocardiographic data after early and late mechanical recanalization of infarct-related artery with and without stent implantation. Medicina 2007, 43, 703.

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