1. A Clinical Score for Predicting Atrial Fibrillation in Patients with Cryptogenic Stroke or Transient Ischemic Attack
- Author
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Kwong, Calvin, Ling, Albee Y, Crawford, Michael H, Zhao, Susan X, and Shah, Nigam H
- Subjects
Biomedical and Clinical Sciences ,Cardiovascular Medicine and Haematology ,Cardiovascular ,Stroke ,Neurosciences ,Prevention ,Heart Disease ,Genetics ,Clinical Research ,Aged ,Aged ,80 and over ,Atrial Fibrillation ,California ,Coronary Disease ,Databases ,Factual ,Female ,Heart Failure ,Humans ,Hypertension ,Ischemic Attack ,Transient ,Logistic Models ,Male ,Middle Aged ,Multivariate Analysis ,Retrospective Studies ,Risk Factors ,Sensitivity and Specificity ,Severity of Illness Index ,Time Factors ,Atrial fibrillation ,Cryptogenic stroke ,Rhythm monitoring ,Cardiovascular risk and prevention ,Cardiorespiratory Medicine and Haematology ,Cardiovascular System & Hematology ,Cardiovascular medicine and haematology - Abstract
ObjectivesDetection of atrial fibrillation (AF) in post-cryptogenic stroke (CS) or transient ischemic attack (TIA) patients carries important therapeutic implications.MethodsTo risk stratify CS/TIA patients for later development of AF, we conducted a retrospective cohort study using data from 1995 to 2015 in the Stanford Translational Research Integrated Database Environment (STRIDE).ResultsOf the 9,589 adult patients (age ≥40 years) with CS/TIA included, 482 (5%) patients developed AF post CS/TIA. Of those patients, 28.4, 26.3, and 45.3% were diagnosed with AF 1-12 months, 1-3 years, and >3 years after the index CS/TIA, respectively. Age (≥75 years), obesity, congestive heart failure, hypertension, coronary artery disease, peripheral vascular disease, and valve disease are significant risk factors, with the following respective odds ratios (95% CI): 1.73 (1.39-2.16), 1.53 (1.05-2.18), 3.34 (2.61-4.28), 2.01 (1.53-2.68), 1.72 (1.35-2.19), 1.37 (1.02-1.84), and 2.05 (1.55-2.69). A risk-scoring system, i.e., the HAVOC score, was constructed using these 7 clinical variables that successfully stratify patients into 3 risk groups, with good model discrimination (area under the curve = 0.77).ConclusionsFindings from this study support the strategy of looking longer and harder for AF in post-CS/TIA patients. The HAVOC score identifies different levels of AF risk and may be used to select patients for extended rhythm monitoring.
- Published
- 2017