Causes of false negative and false positive stress echocardiograms
| False negatives | False positives |
|---|---|
| CABG, coronary artery bypass grafting; LBBB, left bundle branch block | |
| Inadequate stress | Over interpretation, interpreter bias |
| Antianginal treatment (especially β blockers) | Localised basal inferior wall abnormalities |
| Mild stenoses | Abnormal septal motion (LBBB, post-CABG) |
| Left circumflex disease | |
| Poor image quality | Cardiomyopathies |
| Delayed images post-stress | Hypertensive responses to stress |