Open AccessPrognostic impact of non-improvement of global longitudinal strain in patients with revascularized acute myocardial infarction
Author(s) -
Jan Erik Otterstad,
Ingvild Billehaug Norum,
Vidar Ruddox,
An Chau Maria Le,
Bjørn Bendz,
John Munkhaugen,
Ole Klungsøyr,
Thor Edvardsen
Publication year - 2021
Publication title -
the international journal of cardiovascular imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.726
H-Index - 58
eISSN - 1875-8312
pISSN - 1569-5794
DOI - 10.1007/s10554-021-02349-2
Subject(s) - medicine , ejection fraction , myocardial infarction , cardiology , percutaneous coronary intervention , proportional hazards model , heart failure
Global longitudinal strain (GLS) is a more sensitive prognostic factor than left ventricular ejection fraction (LVEF) in various cardiac diseases. Little is known about the clinical impact of GLS changes after acute myocardial infarction (AMI). The present study aimed to explore if non-improvement of GLS after 3 months was associated with higher risk of subsequent composite cardiovascular events (CCVE). Patients with AMI were consecutively included at a secondary care center in Norway between April 2016 and July 2018 within 4 days following percutaneous coronary intervention. Echocardiography was performed at baseline and after 3 months. Patients were categorized with non-improvement (0 to - 100%) or improvement (0 to 100%) in GLS relative to the baseline value. Among 214 patients with mean age 65 (± 10) years and mean LVEF 50% (± 8) at baseline, 50 (23%) had non-improvement (GLS: - 16.0% (± 3.7) to - 14.2% (± 3.6)) and 164 (77%) had improvement (GLS: - 14.0% (± 3.0) to - 16.9% (± 3.0%)). During a mean follow-up of 3.3 years (95% CI 3.2 to 3.4) 77 CCVE occurred in 52 patients. In adjusted Cox regression analyses, baseline GLS was associated with all recurrent CCVE (HR 1.1, 95% CI 1.0 to 1.2, p < 0.001) whereas non-improvement versus improvement over 3 months follow-up was not. Baseline GLS was significantly associated with the number of CCVE in revascularized AMI patients whereas non-improvement of GLS after 3 months was not. Further large-scale studies are needed before repeated GLS measurements may be recommended in clinical practice.Trial registration: Current Research information system in Norway (CRISTIN). Id: 506563.