ST-segment elevation during exercise testing is usually indicative of severe proximal coronary artery disease. In this report, the authors describe a patient who underwent exercise stress testing and developed apparent ST elevation in the inferolateral leads. However, noninvasive imaging studies revealed no evidence of myocardial ischemia or other recognized causes of this exercise electrocardiographic (ECG) finding. Analysis of the ECG tracings showed that ST elevation was produced by marked prolongation of the PR interval, super-imposing the P wave on the J-junction of the preceding QRS-ST-segment complex. The authors suggest that marked PR prolongation during exercise may mimic ST elevation, and this possibility should be considered in patients with this exercise ECG finding in whom cardiac evaluation is negative.
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http://dx.doi.org/10.1016/s0022-0736(05)80286-9 | DOI Listing |
Background: There is a lack of evidence regarding the association between plasma phenylacetylglutamine levels and lesion severity and clinical prognosis in patients with ST-segment elevation myocardial infarction (STEMI) with multivessel coronary disease (MVCD). This study aims to investigate the potential of phenylacetylglutamine as a biomarker for major adverse cardiovascular events (MACEs) of patients with STEMI and MVCD.
Methods And Results: Clinical data and blood samples were collected from 631 patients with STEMI and MVCD, who underwent primary percutaneous coronary intervention.
Res Pract Thromb Haemost
January 2025
Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark.
Background: Reduced effect of antiplatelet therapy has been reported in patients with ST-segment elevation myocardial infarction (STEMI). This could partly be explained by an increase of highly reactive immature platelets.
Objectives: To investigate changes in platelet maturity and reactivity after acute STEMI.
Heliyon
January 2025
Clinical Laboratory, Chest Hospital, Tianjin University, Tianjin, 300222, China.
Objective: The aim of this paper is to discover differentially expressed genes related to ferroptosis (DEFRGs) in patients with ST-segment elevation myocardial infarction (STEMI) and to construct a reliable prognostic signature that incorporates key DEFRGs and easily accessible clinical factors.
Methods: We did a systematic review of Gene Expression Omnibus datasets and picked datasets SE49925, GSE60993, and GSE61144 for analysis. We applied GEO2R to find DEFRGs and overlapped them among the picked datasets.
Cardiovasc Diabetol
January 2025
Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Peking Union Medical College & Chinese Academy of Medical Sciences, No.167, Beijing, 100037, China.
Aim: Both clonal hematopoiesis of indeterminate potential (CHIP) and type 2 diabetes mellitus (T2DM) are conditions closely associated with advancing age. This study delves into the possible implications and prognostic significance of CHIP and T2DM in patients diagnosed with ST-segment elevation myocardial infarction (STEMI).
Methods: Deep-targeted sequencing employing a unique molecular identifier (UMI) for the analysis of 42 CHIP mutations-achieving an impressive mean depth of coverage at 1000 × -was conducted on a cohort of 1430 patients diagnosed with acute myocardial infarction (473 patients with T2DM and 930 non-DM subjects).
Cardiovasc Revasc Med
January 2025
Cardiology Department, Hospital Garcia de Orta, Almada, Portugal; Centro Cardiovascular da Universidade de Lisboa, Centro Académico Médico de Lisboa, Universidade de Lisboa, Lisboa, Portugal.
Introduction: Women increased risk of early mortality following ST-segment elevation myocardial infarction (STEMI) has been attributed to older age, more comorbidities, and less primary revascularization (PCI). Data on long-term outcomes is conflicting, and younger patients' specific evidence is limited.
Purpose: Compare gender outcomes following STEMI within a cohort of younger (≤55 years) and older (>55 years) individuals.
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