Accuracy of Emergency Department Chest Pain Patients' Reporting of Coronary Disease History.

ABSTRACT

Introduction: History is an important component of emergency department risk stratification for chest pain patients. We hypothesized that a significant portion of patients would not be able to accurately report their history of coronary artery disease (CAD) and diagnostic testing. Methods: We prospectively enrolled a convenience sample of a cohort of adult ED patients with a chief complaint of chest pain. They completed a structured survey that included questions regarding prior testing for CAD and cardiac history. Study authors performed a structured chart review within the electronic medical record for our 6-hospital system. Results of testing for CAD, cardiac interventions, and chart diagnoses of CAD/acute myocardial infarction (AMI) were recorded. Categorical data were analyzed by Chi-square and continuous data by logistic regression. Results: About 196 patients were enrolled; mean age 57 ± 15 years, 48% female, 67% Hispanic, 50% income <$20,000/year. About 43% (95% confidence interval [CI] 35%-51%) of patients stated that they did not have CAD, yet medical records indicated that they were CAD+. With increasing age, patients were more likely to accurately report the absence of CAD (P < 0.001). There was no association between patients reporting no CAD, but CAD+ in records with respect to the following characteristics female gender (P = 0.37), Hispanic race (P = 0.73), income (P = 0.41), less than or equal to high school education (P = 0.11), and private insurance (P = 0.71). For patients with prior AMI, 7.2% (95% CI 2.7%-11%) reported no prior history of AMI. Conclusions: Within our study group from a predominantly poor, Hispanic population, patients had a poor recall for the presence of CAD in their medical history.