Τίτλος:
Temporal changes of noninvasive electrocardiographic risk factors for sudden cardiac death in post-myocardial infarction patients with preserved ejection fraction: Insights from the PRESERVE-EF study
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
Background: Several noninvasive risk factors (NIRFs) have been proposed for sudden cardiac death risk stratification in post-myocardial infarction (post-MI) patients with preserved ejection fraction (EF). However, it remains unclear if these factors change over time. Methods: We evaluated seven electrocardiographic NIRFs as they were described in the PRESERVE-EF trial in 80 post-MI patients with EF ≥ 40%, at least 40 days after revascularization and 1 year later. Results: Mean patient age was 56 ± 10 years, and 88% were men. Mean EF was 50 ± 5%. The prevalence of (a) positive late potentials (27.5% vs. 28.8%, p =.860), (b) >30 premature ventricular complexes/hour (8.8% vs. 11.3%, p =.598), (c) nonsustained ventricular tachycardia (8.8% vs. 5%, p =.349), (d) standard deviation of normal RR intervals <75 ms (3.8% vs. 3.8%, p = 1.000), (e) QTc derived from 24-hr electrocardiography >440 ms (men) or >450 ms (women) (17.5% vs. 17.5%, p = 1.000), (f) deceleration capacity ≤4.5 ms and heart rate turbulence onset ≥0% and slope ≤2.5 ms (2.5% vs. 3.8%. p = 1.000), and (g) ambulatory T-wave alternans ≥65 μV in two Holter channels (6.3% vs. 6.3%, p = 1.000) were similar between the two measurements. However, five patients (6.3%) without any NIRFs during the first assessment had at least one positive NIRF at the second assessment and six patients (7.5%) with at least one NIRF at baseline had no positive NIRFs at 1 year. Conclusions: While the prevalence of the examined electrocardiographic NIRFs between the two examinations was similar on a population basis, some patients without NIRFs at baseline developed NIRFs at 1 year and vice versa, highlighting the need for risk factor reassessment during follow-up. © 2019 Wiley Periodicals, Inc.
Συγγραφείς:
Xenogiannis, I.
Gatzoulis, K.A.
Flevari, P.
Ikonomidis, I.
Iliodromitis, E.
Trachanas, K.
Vlachos, K.
Arsenos, P.
Tsiachris, D.
Tousoulis, D.
Brilakis, E.S.
Alexopoulos, D.
Περιοδικό:
Annals of Noninvasive Electrocardiology
Εκδότης:
Blackwell Publishing Inc.
Λέξεις-κλειδιά:
adult; Article; electrocardiography; female; groups by age; heart ejection fraction; heart infarction; heart rate measurement; heart ventricle tachycardia; Holter monitoring; human; major clinical study; male; middle aged; non invasive procedure; prevalence; priority journal; revascularization; risk factor; sudden cardiac death; cardiac muscle; clinical trial; electrocardiography; Greece; heart; heart infarction; multicenter study; pathology; pathophysiology; procedures; prospective study; sudden cardiac death; time, Death, Sudden, Cardiac; Electrocardiography; Female; Greece; Heart; Humans; Male; Middle Aged; Myocardial Infarction; Myocardium; Prospective Studies; Risk Factors; Time
