Key result
Cardiothoracic ratio showed only a weak, negative correlation with left ventricular ejection fraction (r=-0.176) and could not accurately determine systolic function in patients with heart failure.
Why the study?
Does cardiothoracic ratio (CTR) measured from chest roentgenogram accurately estimate left ventricular ejection fraction (EF) in patients with congestive heart failure?
Cross-Sectional (n=7,476)
Does cardiothoracic ratio (CTR) measured from chest roentgenogram accurately estimate left ventricular ejection fraction (EF) in patients with congestive heart failure?
Effect estimate: r=-0.176
Cardiothoracic ratio measured from chest X-rays correlates poorly with left ventricular ejection fraction and should not be used to estimate systolic function in patients with heart failure.
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CTR unreliable for EF assessment in HF; leaves open validation of radiographic surrogates in prospective cohorts.
E.F. Philbin (1998) conducted a cross-sectional in Congestive heart failure (CHF) (n=7,476). Cardiothoracic ratio (CTR) vs. Left ventricular ejection fraction (EF) was evaluated on Correlation between cardiothoracic ratio and left ventricular ejection fraction (r=-0.176). Cardiothoracic ratio showed only a weak, negative correlation with left ventricular ejection fraction (r=-0.176) and could not accurately determine systolic function in patients with heart failure.
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