Sudden Cardiac Death

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6/22/2015 Abstract 19465: QRS Scoring System for Early Estimation of Myocardial Infarct Size and Its Ability to Accurately Predict Ejection Fraction at 3 Months and…

Circulatio n

circ.ahajournals.org Circulation. 2014; 130: A19465 Abstracts and presentations are embargoed for release at date and time of presentation or time of AHA/ASA news event. Failure to honor embargo policies (http://newsroom.heart.org/newsmedia/embargo-policy) will result in the abstract being withdrawn and barred from presentation.

Core 4. Heart Rhythm Disorders and Resuscitation Science Session Title: Sudden Cardiac Death: Arrhythmia--Clinical Electrophysiology, Diagnosis and Risk Stratification Abstract 19465: QRS Scoring System for Early Estimation of Myocardial Infarct Size and Its Ability to Accurately Predict Ejection Fraction at 3 Months and the Need for Early AICD Implantation Jorge Romero; Rodolfo A Es trada; N idhis h Tiwari; Anthony A H olmes ; Ak bar Ahmed; Eric Manheimer; Mario J Garc ia +

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Abstract Bac k ground: Given the existing controversy regarding the appropriate determination time for placement of implantable cardioverter-defibrillator (ICD) in patients at risk for sudden cardiac death (SCD) following acute myocardial infarction (AMI) and because of the fact that the highest incidence of SCD occurs in the first 3 months after an event. We proposed to evaluate whether quantification of left ventricular (LV) scar size shortly after AMI using the well validated Selvester QRS score strongly correlates with ejection fraction at 3 months. Methods : A total of 28 consecutive post-AMI patients were included in this study. All patients had STEMI and underwent cardiac catheterization. EKGs before discharge were analyzed to calculate QRS score (32 criteria). We used adjusted criteria for each of the following abnormalities: left and right ventricular hypertrophy (LVH and RVH, respectively), left anterior fascicular block (LAFB), left bundle-branch block (LBBB), right bundle-branch block (RBBB), RBBB + LAFB, and no confounders. Echocardiogram was obtained at 3 months to assess LVEF. Linear and logistic regression analyses were performed. Res ul ts : 28 patients with mean age was 58, male 60%. The linear regression analysis showed a strong correlation coefficient between QRS score early after AMI and LVEF (r: -0.7987044 with a P-value (two-tailed)