Left Atrial Strain for Predicting MACE in NSTEMI
Incremental Prognostic Value of Left Atrial Reservoir Strain Beyond the GRACE 2.0 Score and Conventional Echocardiographic Parameters for Predicting 6-Month MACE in Patients With NSTEMI
調査の概要
状態
状態
条件
条件
詳細な説明
Non-ST-elevation myocardial infarction (NSTEMI) carries significant short- and long-term risk of major adverse cardiovascular events despite advances in management. Current risk stratification relies on clinical scores such as GRACE 2.0 and conventional echocardiographic parameters including left ventricular ejection fraction (LVEF) and left atrial volume index (LAVI). These tools have limitations, as LVEF may remain preserved and LAVI mainly reflects chronic remodeling.
Left atrial (LA) reservoir strain assessed by two-dimensional speckle tracking echocardiography is a sensitive marker of left ventricular filling pressure and diastolic function. Reduced LA reservoir strain has been associated with adverse outcomes after NSTEMI, but data on its incremental prognostic value beyond established risk models remain limited.
This prospective observational study will assess whether LA reservoir strain independently predicts 6-month MACE and improves risk discrimination when added to the GRACE 2.0 score and conventional echocardiographic parameters in patients with NSTEMI.
研究の種類
研究の種類
入学 (推定)
入学
連絡先と場所
研究連絡先
研究連絡先
- 名前:Ahmed A Abu Al-Abbass
- 電話番号:0 10 03702766
- メール:ahmed.18313356@med.aun.edu.eg
参加基準
適格基準
適格基準
就学可能な年齢
- 大人
- 高齢者
健康ボランティアの受け入れ
サンプリング方法
調査対象母集団
説明
Inclusion Criteria:
- Age > 18 years
- Confirmed diagnosis of NSTEMI according to current ESC/ACC guidelines
- Willingness to provide informed consent and complete 6-month follow-up
- Undergoing coronary angiography or revascularization during the index hospitalization
Exclusion Criteria:
- ST-elevation myocardial infarction (STEMI)
- Atrial fibrillation or other significant arrhythmia at presentation
- Moderate to severe valvular heart disease (especially mitral valve disease)
- Prior cardiac surgery or valve replacement
- Poor echocardiographic image quality precluding reliable strain analysis
- Chronic kidney disease on dialysis
- Known cardiomyopathy (hypertrophic, dilated, or infiltrative)
- Pregnancy
- Refusal to participate
研究計画
研究はどのように設計されていますか?
デザインの詳細
この研究は何を測定していますか?
主要な結果の測定
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
6-month major adverse cardiovascular events (MACE)
時間枠:6 months
|
Composite of cardiac death, recurrent myocardial infarction, heart failure hospitalization, or life-threatening arrhythmia occurring within 6 months of admission.
|
6 months
|
二次結果の測定
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Left atrial reservoir strain
時間枠:Baseline
|
Peak atrial longitudinal strain (PALS) during the reservoir phase measured by two-dimensional speckle tracking echocardiography (EchoPAC software), expressed as percentage (%).
Higher values indicate better left atrial function.
|
Baseline
|
|
Change in risk discrimination with addition of LA reservoir strain
時間枠:6 months
|
Change in risk discrimination for 6-month MACE when left atrial reservoir strain is added to the GRACE 2.0 score, left ventricular ejection fraction (LVEF), and left atrial volume index (LAVI), assessed by change in C-statistic, Net Reclassification Improvement (NRI), and Integrated Discrimination Improvement (IDI).
|
6 months
|
|
Optimal cutoff value of LA reservoir strain
時間枠:6 months
|
Optimal cutoff value of left atrial reservoir strain for predicting 6-month MACE determined by receiver operating characteristic (ROC) curve analysis.
|
6 months
|
|
Correlation of LA reservoir strain with clinical parameters
時間枠:Baseline
|
Correlation between left atrial reservoir strain (expressed as percentage) and the following parameters: GRACE 2.0 score, peak troponin level (ng/L), left ventricular ejection fraction (%), and E/e' ratio.
Correlation will be assessed using Pearson or Spearman correlation coefficient.
|
Baseline
|
協力者と研究者
捜査官
捜査官
- スタディチェア:Hatem A Helmy, prof、Department of Cardiology, Faculty of Medicine, Assiut University
出版物と役立つリンク
一般刊行物
- Schuster A, Backhaus SJ, Stiermaier T, Navarra JL, Uhlig J, Rommel KP, Koschalka A, Kowallick JT, Lotz J, Gutberlet M, Bigalke B, Kutty S, Hasenfuss G, Thiele H, Eitel I. Left Atrial Function with MRI Enables Prediction of Cardiovascular Events after Myocardial Infarction: Insights from the AIDA STEMI and TATORT NSTEMI Trials. Radiology. 2019 Nov;293(2):292-302. doi: 10.1148/radiol.2019190559. Epub 2019 Sep 17.
- Iwahashi N, Gohbara M, Kirigaya J, Abe T, Horii M, Hanajima Y, Toya N, Takahashi H, Kimura Y, Minamimoto Y, Okada K, Matsuzawa Y, Hibi K, Kosuge M, Ebina T, Tamura K, Kimura K. Prognostic Significance of the Combination of Left Atrial Reservoir Strain and Global Longitudinal Strain Immediately After Onset of ST-Elevation Acute Myocardial Infarction. Circ J. 2022 Sep 22;86(10):1499-1508. doi: 10.1253/circj.CJ-21-0907. Epub 2022 May 10.
- Leng S, Ge H, He J, Kong L, Yang Y, Yan F, Xiu J, Shan P, Zhao S, Tan RS, Zhao X, Koh AS, Allen JC, Hausenloy DJ, Mintz GS, Zhong L, Pu J. Long-term Prognostic Value of Cardiac MRI Left Atrial Strain in ST-Segment Elevation Myocardial Infarction. Radiology. 2020 Aug;296(2):299-309. doi: 10.1148/radiol.2020200176. Epub 2020 Jun 16.
- Beyls C, Hermida A, Nicolas M, Debrigode R, Vialatte A, Peschanski J, Bunelle C, Fournier A, Jarry G, Landemaine T, Malaquin D, Kubala M, Mahjoub Y, Leborgne L. Left atrial strain analysis and new-onset atrial fibrillation in patients with ST-segment elevation myocardial infarction: A prospective echocardiography study. Arch Cardiovasc Dis. 2024 Apr;117(4):266-274. doi: 10.1016/j.acvd.2024.01.002. Epub 2024 Feb 15.
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最終確認日
最終確認日
詳しくは
本研究に関する用語
その他の研究ID番号
その他の研究ID番号
- LA-Strain-NSTEMI-2026
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米国FDA規制医薬品の研究
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